The first all-new 2011 Chevrolet Volt electric vehicles ... charge window, the Volt
seamlessly transitions to ... a full tank of fuel. ... magazine are subject to change.
January & February 2011
The Chevrolet Volt Hits the Road The first all-new 2011 Chevrolet Volt electric vehicles with extended range were delivered to customers in the U.S. last month. The revolutionary fivedoor, four-passenger Volt provides the benefits of an electric vehicle without the range limitations associated with other electric vehicles in the market.
PROPULSION SYSTEM The Volt is a one-of-a-kind, allelectrically driven vehicle engineered to operate in all climates. GM’s Voltec propulsion system consists of a 1 6-kWh lithium-ion battery pack and electric drive unit that provide a pure electric range between 25 and 50 miles (40 to 80 km), depending on ambient temperature, terrain and driving technique. When the energy level of the battery drops below the state-ofcharge window, the Volt seamlessly transitions to extended-range mode. Power is inverted from a technically advanced, 1.4L 63-kW (84-hp) gasoline-powered onboard engine to the electric drive unit to provide up to 310 additional miles (500 km) of range on a full tank of fuel. When the car is plugged in and recharged, it runs again on a pure electric charge. The Volt reaches a top speed of 100 mph (160 km/h). The electric drive unit’s excellent low speed torque of 273 lb.-ft. (368 Nm) takes it from 0 to 60 mph in less than 9.0 seconds and the quarter mile in less than 17.0 seconds.
speed. The Volt drive unit consists of two electric motors, three clutches and a planetary gear set that improve overall efficiency by reducing the combined rotational speed of the electric motors. This configuration reduces battery drain at highway speeds, adding up to two miles of additional EV range.
The Chevrolet Volt Hits the Road . . . . . . . . . . .1 New Electrical Service Seminars . . . . . . . . . .4 Outside Air Temperature Display Operation .4 Inspection/Maintenance Test Diagnostic Trouble Codes . . . . . . . . . . . . . . . . .5 2011 Last Year for ASE Written Testing . . . . . .5 TSS Q&A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 Tech Tips . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Drive Unit
Training Update . . . . . . . . . . . . . . . . . . . . . . . . . .8
Most battery electric vehicles use a single motor with a fixed reduction gear that steps down the motor speed to synchronize with the wheel speed. The Volt uses an advanced, 111-kW (149-hp) electric drive unit to boost efficiency. The efficiency of any electric motor always drops off as it approaches its maximum rotational
IN THIS ISSUE
ON THE WEB
Towing of the Volt is to be done by a flatbed carrier only. Under no circumstances can the Volt be dinghy towed. continued on page 2
– www.acdelcotechconnect.com, click the TechConnect Magazine link, or – Log in to the ACDelco LMS, click the Resources link
The Chevrolet Volt Hits the Road — continued from page 1 The Volt’s motors and gear-set are mounted in-line with the industry’s first range-extending internal combustion gasoline engine. Two of the clutches are used to either lock the ring gear of the planetary gear-set or connect it to the generator/motor, depending on the mode. The third clutch connects the gasoline engine to the generator/motor to provide range extension capability. This innovative new drive unit has four distinct operating modes (two electric modes and two extended-range modes). Electric Only, Engine Off (One Motor) – The vehicle operates in fullelectric mode without starting the engine for approximately 25 to 50 miles. The primary traction motor provides all propulsion, drawing all of its energy from the battery. Electric Only, Engine Off (Two Motors) – During highway cruising, if the required torque to propel the vehicle is low, the ring gear is coupled to the generator/motor. This allows the two motors to work in tandem for greater efficiency. Electric Only, Engine On (Series) – Once the battery has reached a determined state of charge, the gasoline engine will start. It is coupled to the motor/generator via the third clutch. The engine-driven generator and battery provides electricity to the traction motor via the inverter. The engine will operate at an appropriate speed to optimize fuel consumption while maintaining output power requirements.
Engine Starting Independent of the vehicle being plugged in or completely charged, when vehicle power is ON, the gasoline engine may start under the following conditions: • Propulsion battery charge is low • Propulsion battery temperature is hot or cold • Cold ambient temperatures less than approximately 25° F (4° C) This vehicle does not use a 12V starter motor to crank the gasoline engine. A much more powerful 300V motor/generator located within the transmission is utilized to crank the engine. The 300V drive motor/generator can rotate the engine to operating speed (800 rpm) within just a few hundred milliseconds. The 300V drive motor/generator allows near-instant starting of the engine.
HIGH VOLTAGE BATTERY The Volt’s high voltage battery consists of a 5.5-foot, 435-pound (198.1 kg) T-shaped, 16-kWh lithium-ion battery pack. The battery pack consists of nine modules and 288 prismatic cells. The lithium-ion high voltage battery pack holds its charge efficiently and has no memory effect (so it doesn’t have to be run down completely before recharging). The owner should keep the vehicle plugged in, even when fully charged, to keep the battery temperature ready for the next drive.
Because the most efficient way to charge the Volt’s battery is to plug it in, the generator is used only to maintain minimum battery state of charge. If the battery is drawn down below the minimum level, the generator will charge the battery up to its minimum state of charge and then maintain it there. Output Split, Engine On (Combined) – The blended two motor electric propulsion strategy used at higher speeds in EV driving also has been adapted for extended-range driving. During highway cruising, if the required torque to propel the vehicle is low, the clutches that connect the generator/motor to both the engine and the ring gear are engaged, combining the engine and both motors for efficient operation in an output power split configuration.
Lithium-ion was chosen over nickel metal hydride for the Volt battery because it packs two to three times the power of a nickel metal hydride battery in a much smaller package. It also is more efficient and suffers little loss of charge when not in use. The liquid cooled battery pack is located beneath the vehicle. The 360V continued on page 3
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Volume 18, Number 1 (TS-PU-0001-11) ACDelco TechConnect is published bi-monthly and online for technicians of Total Service Support (TSS) and Key Fleet accounts to provide timely service information, increase knowledge and improve the performance of the service center. ACDelco 360 represents our mission to look at our businesses at every possible angle to provide value and assistance to our distributors and their customers as well as offer a full circle of support with programs, tools, training and marketing focused on enhancing and growing our partnership successfully.
Publisher: Mike DeSander ACDelco E-mail /
[email protected] Editor: Mike Militello ACDelco E-mail /
[email protected] Technical Editor: Mark Spencer E-mail /
[email protected] Production Manager: Marie Meredith Desktop Publishing: 5by5 Design LLC E-mail /
[email protected] Write to: * ACDelco TechConnect P.O. Box 500 Troy, MI 48007-0500 On the Web:: To read and search recent issues of TechConnect online: – www.acdelcotechconnect.com, click the TechConnect Magazine link, or – Log in to the ACDelco LMS, click the Resources link ACDelco service tips are intended for use by professional technicians, not a “do-it-yourselfer.” They are written to inform those technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions and know-how to do a job properly and safely. If a condition is described, it cannot be assumed that the information applies to all vehicles or that all vehicles will have that condition. All materials and programs described in this magazine are subject to change. Submission of materials implies the right to edit and publish. Inclusion in the publication is not necessarily an endorsement of the individual or the company. TechConnect is published for ACDelco by Sandy Corporation, Troy, MI.
©2011 ACDelco. All rights reserved.
The Chevrolet Volt Hits the Road — continued from page 2 direct current battery is formed from 288 cells. Each cell is 5 x 7 x 1/4 inch, and weighs about a pound. Cells are grouped together to form distinct blocks, referred to as sections.
or when electricity rates are lower. Owners also can manage and monitor the Volt remotely via computer on MyVolt.com; or with the OnStar MyLink smart phone application.
The battery is connected to the propulsion circuit or charging circuit using unique pairs of contactors. In general terms, the main contactors will close when the ignition switch is in the ON position, and the charging contactors will close when plugged in with the ignition switch in the OFF position.
CHASSIS
Because batteries can be sensitive to temperature changes, the Volt pack is climate-controlled via an exclusive active liquid control system that continually monitors and maintains the battery pack temperature for optimum performance and durability. Circulating liquid (consisting of coolant and distilled water) passes through a series of internal heat exchangers in the battery modules. It is designed to provide reliable battery operation when plugged in, at temperatures as low as -13° F (-25° C) and as high as 122° F (+50° C), and can be powered during driving either by the battery or the engine.
Components of the Volt’s MacPherson strut-type suspension are constructed of forged aluminum for reduced weight. Cold-formed, high-performance front springs are lighter and use less coiling than conventional springs.
Key technologies include:
Charging
The Volt's fully blended electrohydraulic brake system enables 100% regenerative braking, 100% traditional disc friction braking, or any combination of both. Regenerative braking, which captures energy for transfer back to the battery, can provide up to 0.2g of deceleration (about 94% of braking events). Braking that involves more than 0.2g of deceleration is a combination of regenerative and friction braking. During a panic stop, the system seamlessly transitions to 100% friction. If the battery is fully charged, the brake controller directs the system to conduct friction braking.
240V charging station
Approximately 4 hours
120V household outlet
Approximately 10 hour
Once the vehicle is plugged in, owners can schedule either immediate or delayed charges, even coordinating charging according to departure time
There is much more technology inside the Volt than its electric propulsion system. Intuitive features — high-resolution
displays, connectivity and the ability to monitor and control vehicle functions remotely — redefine how owners will interface with the vehicle.
The Volt features a ZF variable assist electric power steering system with dual pinions (one is used for steering, the other to add assist). A combined electric motor and sensing unit monitors steering angle, and delivers appropriate assist to the steering gear in all conditions. The system draws its power from a 12V battery in the rear of the vehicle.
Charging Times
DRIVER INTERACTION
A sophisticated compound crank rear axle provides quick reaction, low weight and consistent camber control. The cast iron control arms are attached to the steel cross-car beam with a patented magnetic-arc welding process.
Fully charging or fully depleting a battery shortens its life. The Volt battery is controlled, or buffered, so it operates within a safe state-of-charge window. In demanding situations (such as driving in Mountain mode), the battery state of charge will raise the lower limit to ensure there is adequate power when needed. The battery’s top and bottom buffer zones help ensure long life.
Charging the Volt’s battery is simple and intuitive, and can be done through 120V conventional household electrical outlets, or through a dedicated 240V charging station.
Max all-season low-rolling resistance tires are optimized for electric vehicle range, noise, feel and performance.
Lightweight aluminum wheels weigh only 17.8 pounds (8.1 kg) each, compared to 24.2 pounds (11 kg) for typical 17-inch wheels. Goodyear Fuel
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• High-resolution, seven-inch, fullcolor LCD reconfigurable Driver Information Center display and instrument cluster. The display shows electric-only range, fuel economy, extended-range, trip information, tire pressure information and a variety of vehicle messages. • High-resolution, seven-inch, fullcolor, center stack-mounted touch screen display that serves as the interface for infotainment and cabin climate controls. An Efficiency (Leaf) button accesses power flow, charging, and energy information screens. • Touch-control infotainment and climate control systems on the center stack. • Remote Keyless Entry that allows drivers to remotely start the vehicle and precondition the cabin based on outside temperatures while the vehicle is plugged in, enhancing efficiency. • An exclusive mobile app, powered by OnStar MyLink, which enables owners to engage with Volt functions using a smart phone. – Thanks to Keith Newbury and Steve Falko
New Electrical Service Seminars ACDelco has recently updated several service seminars covering vehicle electrical systems and batteries. These one-hour seminars are designed to be offered as short, concise training events. The updated seminars focus on servicing tips that can help reduce premature parts failure and prevent comebacks.
Rotating Electrical System Servicing Tips – S-DS11-02.01SEM The seminar covers key service items related to preventing early failures of rotating electrical system components as well as the proper service techniques when replacing various on-vehicle components. It also highlights some of the
latest bulletins and diagnostics when servicing charging and starting systems
• Air Conditioning System Servicing Tips – S-DS11-06.01SEM
Battery Servicing Tips – S-DS11-09.01SEM
• Cooling System Servicing Tips – S-DS11-07.01SEM
This seminar covers key service items to prevent early failures of batteries along with a review of the proper service techniques when servicing the battery. It also covers some of the latest bulletins, charging tips and diagnostics when servicing batteries.
• Brake System Servicing Tips – S-DS11-08.01SEM
Other servicing tips seminars include: • Fuel System Servicing Tips – S-DS11-03.01SEM • Emission Control System Servicing Tips – S-DS11-04.01SEM
To find out when an ACDelco service seminar will be held in your area, contact your local ACDelco distributor. For more information about other ACDelco training opportunities available at training centers and online, go to www.acdelcotechconnect.com and click the Training tab. – Thanks to Mike DeSander
Outside Air Temperature Display Operation The outside air temperature is displayed on the Driver Information Center, radio or rear view mirror in a number of GM vehicles. There may be some confusion about the operation of the display and how quickly it updates ambient temperature. Depending on several factors, the temperature may not be updated immediately and owners may feel that the display is inaccurate at times.
the outside temperature display. The outside air temperature algorithm uses three pieces of information: outside air temperature data, vehicle speed, and the time the engine was turned off.
As an example, here’s a look at the operation of the outside air temperature display on several GM small cars from recent model years (2004-2010 Chevrolet Malibu; 2005-2010 Chevrolet Cobalt and Pontiac G6; 2006-2011 Chevrolet HHR; and 2007-2010 Saturn AURA). The ambient air temperature sensor is a variable resistor interfaced to the Body Control Module (BCM). The ambient air temperature sensor is a 2-wire negative temperature coefficient thermistor. The BCM applies 5 volts to an internal input resistor connected to the signal circuit of the ambient air temperature sensor. The BCM also provides the ground to the ambient air temperature sensor through the low reference circuit. When the ambient air temperature is cold, the sensor resistance is high and the signal voltage is high. When the ambient air temperature is hot, the sensor resistance is low and the voltage signal is low. The BCM provides the logic for reading the ambient air temperature sensor, filtering the data and transmitting the information via the serial data circuit to
The main source of variation between actual outside temperature and the reading inside the vehicle is the variable airflow across the sensor at low vehicle speed and stopped conditions. At higher speeds, when more airflow is moving through the front of the vehicle, a more accurate indication of actual air temperature is provided. When the engine is first started, the algorithm looks at how long the engine was off and if the outside temperature is lower than the last reading taken during the previous ignition cycle. From this information, it’s determined if a new outside temperature reading should be taken. 4
If the engine was off long enough or the current outside air temperature is cooler than the stored value, a new outside temperature reading is taken and displayed. If the engine was not off long enough or the current outside air temperature is higher than the stored value from the previous ignition cycle, the last stored value of outside air temperature taken will be displayed. The outside air temperature will continue to be updated every second as long as the outside air temperature is the same or cooler than the previous reading. Once the new outside air temperature reading exceeds the previous temperature and the vehicle is traveling less than 18 mph (29 km/h), the displayed outside air temperature will remain at its last value. Once the vehicle speed exceeds 18 mph, the displayed outside air temperature will be updated. If the speed drops below 18 mph, the outside air temperature will freeze at its last value. When using a scan tool during diagnosis, it is possible that the temperature reading on the scan tool will differ from the temperature displayed on the DIC/radio without there being a problem with the vehicle. The DIC/Radio only displays the reading being sent from the BCM. – Thanks to Ernest Haller
Inspection/Maintenance Test Diagnostic Trouble Codes all models will be updated at the same time, depending on engine option. The I/M Test DTCs will be supported by all emissions-related electronic control units, such as ECMs, TCMs, FPCMs, etc.
After repairs on any On-Board Diagnostic (OBD) II-related systems, technicians may find that any Inspection/ Maintenance (I/M) Test Diagnostic Trouble Codes (DTCs) that are stored will not clear.
I/M Test DTCs cannot be cleared using a scan tool or by disconnecting power to the control module. They will only clear when the control module diagnostic that set the DTC has run and passed, confirming the problem has been repaired. Some diagnostics for I/M Test DTCs will run and pass very quickly (a repaired open circuit DTC will pass in milliseconds), while others may take days depending on vehicle operating conditions (such as a complex diagnostic for an EVAP small leak test). Stored I/M Test DTCs discovered during a vehicle emission inspection may cause a vehicle to fail or be rejected. Using a scan tool, technicians can observe I/M System Status. The display provides an indication of when the control module has completed the required tests. This does not necessarily mean that the test has passed, only that a decision was made. If the diagnostic fails, a traditional DTC will indicate the failure. The I/M System Status information may be useful for a technician to determine if diagnostics have run when verifying repairs.
For detailed DTC information, refer to the Service Information I/M Test DTC Table.
I/M Test DTCs are different than traditional current and history DTCs and are used in certain State/Province vehicle emission test programs. Several states require that a vehicle pass on-board diagnostic system tests and the inspection/maintenance emission inspection in order to renew license plates. The rollout of I/M Test DTCs in GM vehicles began in the 2010 model year and will be completed by the 2013 model year. Vehicle implementation is by model and engine, so not
For more information about a specific I/M Test DTC, refer to the Inspection/Maintenance (I/M) Test DTC Table in the appropriate GM Service Information. The traditional current and history DTCs still exist exactly as before and can be cleared using a scan tool. Every Service Information diagnostic procedure that indicates to clear codes should be followed, and the Malfunction Indicator Lamp (MIL) should not illuminate if the problem is not present. – Thanks to Jack Woodward
2011 Last Year for ASE Written Testing The National Institute for Automotive Service Excellence (ASE) will offer the traditional written (paper-and-pencil) certification tests for the final two times in May and November 2011. In 2012, ASE will transition all ASE certification tests from written testing to the computerbased testing (CBT) format with test sessions available eight months of the year.
ASE certification test and its recertification counterpart — 48 certification tests across 11 specialties — will be available in the enhanced CBT format.
CBTs offer test takers advantages in scheduling, convenience, and speed over the written tests. When fully implemented, ASE’s CBTs will be offered in twomonth windows, four times each year. Enhanced ASE computer-based testing This will provide more choices when will debut in July and August 2011. Every reserving an appointment. Plus, when completing a CBT, test New ASE Testing Windows takers will know whether they passed The 2011 testing schedule includes: before leaving the test July/Aug. 2011 center. Certificates will Jan./Feb. 2011 May 2011 Nov. 2011 Enhanced CBT arrive via mail after the No testing Written tests Written tests tests end of the two-month testing window. In 2012, ASE will only offer CBTs, with four two-month testing windows: Jan./Feb. 2012 – CBT
Apr./May 2012 – CBT
July/Aug. 2012 – CBT
Oct./Nov. 2012 – CBT
Even though the ASE certification tests are computer-based, they will not be available to 5
be completed online at home or at work. ASE does offer some non-certification programs online, but the ASE certification tests are only offered in secure, proctored test centers in order to give everyone a fair, consistent, and reliable testing environment, where the identity of each person taking a test is also verified. As part of the move away from written testing, ASE has signed an agreement with Prometric to deliver ASE certification tests in their network of secured, proctored computer-based testing centers. The number of testing sites will grow from its current number of 230 to more than 360 locations. Visit www.ase.com for more information on the new enhanced CBTs as well as to find a test location near you. – Thanks to Mike DeSander
The TSS Q&A provides answers to common questions received by the ACDelco Customer Support Center. Q: Where can I find a full list of Total Service Support program benefits? A: TSS members are eligible for discounts on everything from new GM vehicles to custom rental uniforms from Cintas. A comprehensive list of benefits and how to access them is available online through the ACDelco TechConnect website. • Visit www.acdelcotechconnect.com • Select the Total Service Support tab at the top of the page
If you have any questions about the TSS program or any current ACDelco activities, contact the Customer Support Center at 1-800-825-5886, prompt #0. Q: How do I check my Exclusively Yours Rewards program card balance and where can I redeem my points? A: ACDelco’s Exclusively Yours (ey) Rewards program gives you valuable rewards points that you can use for a long list of items, including contributing to a new GM Vehicle. To check your card balance or find the list of vendors that accept your key card, go to the ACDelco Incentives website. • Visit www.acdelcotechconnect.com
• On the Total Service Support page, select the Program Benefits link
• Select the ACDelco Incentives Link at the top-left of the home page
• Log in to ACDelco TechConnect with your ACDelco account number and your zip code
• Log in to the Incentives website: – Use your TSS number (starts with a 6) and the last 4 digits of the ey card holder SSN
• Once logged in, you will find an alphabetical listing of all TSS benefits and links to all applicable websites, phone numbers and other details
• From the Incentives home page: – Select “How many points do I have now?” – Enter your ey card number to view your balance – This page also will have a list of vendors that accept your ey card Q: How can I find out how many Exclusively Yours points I’ve earned year-to-date? Is there a report? A: Yes. The Incentives site has a very detailed Opportunity Report that includes a monthly snapshot of your Exclusively Yours points and detailed information about your ACDelco purchases as reported by each supplying ACDelco distributor for the year. To access these reports, go to the ACDelco Incentives website. • Select the ACDelco Incentives Link from the www.acdelcotechconnect.com home page • Log in to the Incentives website – Use your TSS number (starts with a 6) and the last 4 digits of the ey card holder SSN • From the Incentives home page:
Click the Program Benefits link on the TSS page for TSS program details.
Q: How do I make sure I get the TSS program discounts when I call for more information? A: ACDelco has worked on the behalf of TSS members to secure a list of discounts and benefits to support your business. If you are calling any of these outside partners, always remember to identify yourself as an ACDelco Total Service Support member when speaking to a service representative. Many of the customer service lines serve a series of partners, so be sure to state that you are part of the ACDelco TSS program in order to ensure that you receive the correct program details and discount.
– Select the “Opportunity Reports” icon – Select “Click here to view” Q: I haven’t received an Exclusively Yours paper statement recently. Are they still being mailed out? A: ACDelco recently migrated to providing only online statements using the online Opportunity Incentives Report. The online report enables all TSS ey cardholders to access the reports at any time and ensures the reports are available to you on a timely basis. It also provides more detailed reporting that lets you see how you are tracking year-to-date. Overall, the online reports allow you to control the details you want to see when it’s convenient for you. 6
The following technical tips provide repair information about specific conditions on a variety of vehicles. If you have a tough or unusual service repair, the TSS Technical Assistance Hot Line can help. Call 1-800-825-5886, prompt #2, to speak with a technical expert with the latest OEM information.
Noise when Turning while Driving over Rough Roads 2003 Chevrolet Cavalier and Pontiac Sunfire; with the 2.2L 4-cylinder engine A rattle or knocking noise may be heard when turning the steering wheel while driving slowly over bumps. This condition may be caused by a hydraulic noise within the steering rack. Refer to GM Bulletin #03-02-32-002 for the service procedure to install a fluid restrictor in the power steering fluid reservoir return line. To install the fluid restrictor, the air cleaner intake tube must be removed, followed by the power steering return hose being removed from the power steering pump.
to the cover and the hoses are routed properly before tightening the air cleaner cover screws.
between a good terminal and a suspect terminal. Replace any terminal in question.
Inoperative Heated Seat
In addition, replace the electrical tape holding the harness in the plastic carrier with woven polyester electrical tape, starting at the Memory Seat Module connectors and extending back to the break-out location in the plastic carrier.
2007-2010 Cadillac Escalade, Escalade ESV, Escalade EXT; Chevrolet Silverado, Suburban, Tahoe; GMC Sierra, Yukon, Yukon XL, Yukon Denali, Yukon XL Denali; 2011 Chevrolet Silverado Heavy Duty, GMC Sierra Heavy Duty The driver or passenger heated seat or heated/cooled seat may turn on and then turn off within one to ten minutes, may warm very slowly, or may be completely inoperative.
The inlet and outlet hoses must not be twisted during installation. Bending the inlet or outlet hoses to make installation easier could lead to component damage.
Air Cleaner Cover Installation 2007-2011 GMC Acadia, 2007-2010 Saturn OUTLOOK, 2008-2011 Buick Enclave, and 2009-2011 Chevrolet Traverse
Harness wrapped in woven polyester electrical tape and connected to the Memory Seat Module.
Refer to the Bulletin for details regarding proper orientation and installation of the harness.
Heated/Cooled Seats On vehicles with heated/cooled seats, the LED indicator may stay on, but the heated seat is inoperative. The fan will continue to blow air. These conditions may be caused by an inoperative Thermo-Electric Device in the seat cushion/seatback ventilation, heating and cooling module. If the heated and cooled seat function is inoperative, but the switch LED indicators are on, the Memory Seat Module is functioning properly and the concern is with the Thermo-Electric Device, which requires replacement of the seat cushion/seatback ventilation, heating and cooling module. Refer to the appropriate Service Information for module replacement.
Heated Seats
Make sure the washer hose (A) is not pinched by the air cleaner housing.
It is possible for the washer hose assembly to become misrouted or trapped between the air cleaner cover and lower housing after air cleaner inspection or air cleaner element replacement. This may cause the washer hose to be pinched by the housing. When reassembling the air cleaner cover to the lower housing, ensure the windshield washer hose clip is secured
On vehicles with heated seats only, several Diagnostic Trouble Codes may be set and the LED indicator may turn on, flash after approximately one minute, and then turn off. The heated seat control circuit terminal and/or ground terminal in harness connector X1 to the Memory Seat Module may have lost tension and is loose. The reduced terminal tension increases resistance in the connector. This repair requires a unique anti-abrasion electrical tape and harness clip. Refer to GM Bulletin #10-08-50-008A for parts information. To repair the resistance condition, disconnect the seat harness connectors from the Memory Seat Module and perform a terminal drag test on connector X1 and connector X4. Using an equivalent male terminal, test that the retention force is significant, comparing 7
Diagnostic Assistance For free technical diagnostic assistance and product information regarding specific ACDelco products, contact these toll-free information hotlines staffed by ASE-certified technicians: Brakes – 1-888-701-6169 (prompt #1) Chassis – 1-888-701-6169 (prompt #2) Clutches – 1-888-725-8625 Lift Supports – 1-800-790-5438 Shocks – 1-877-466-7752 Starters and Alternators – 1-800-228-9672 Steering – 1-866-833-5567 Wiper Blades – 1-800-810-7096
How to Take ACDelco Training Go to www.acdelcotechconnect.com and click the Training tab to log in to the ACDelco Learning Management System (LMS). • To enroll in an Instructor-Led Training (ILT) course, click the Enrollment link or the Instructor-Led Courses link to view the catalog and select a specific course.
Southeast Region Training Locations – continued GM Training Center – Alpharetta, GA Ivy Tech Community College – Evansville, IN J.F. Drake State Technical College – Huntsville, AL
• To enroll in a Virtual Classroom Training (VCT) course, click the Enrollment link or the Virtual Classroom Training Courses link to view the catalog and select a specific course.
J. Sargeant Reynolds Community College – Goochland, VA
• To launch a Web-Based Training (WBT) course, click the Web-Based Courses link to view the catalog and select a specific course.
Sarasota County Technical Institute – Sarasota, FL
• To launch a TechAssist (TAS) course, click the TechAssists link to view the catalog and select a specific course.
Sheridan Technical College – Hollywood, FL
• To launch a Simulation (SIM), click the Simulations link to view the catalog and select a diagnostic challenge simulation.
Training Locations ACDelco offers numerous hand-on Instructor-Led Training (ILT) courses at the following locations around the country.
Lawson State Community College – Bessemer, AL Nashville State Community College – Nashville, TN
Seminole Community College – Sanford, FL
Trenholm State Technical College – Montgomery, AL Wayne Community College – Goldsboro, NC South Central Region Training Locations Austin Community College – Austin, TX Del Mar College W. Campus – Corpus Christi, TX GM Training Center – Garland, TX Hinds Community College Career Center – Raymond, MS
ACDelco Instructor-Led Training Locations
Iowa Western Community College – Council Bluffs, IA
Northeast Region Training Locations
Johnson County Community College – Overland Park, KS
CNY Autotech Training Center – Syracuse, NY
Longview Community College – Lee's Summit, MO
Community College of Allegheny County West Hills Center – Oakdale, PA
North Harris College – Houston, TX
GM Training Center – Ardsley, NY
Ozarks Technical Community College – Springfield, MO
Lakes Region Community College – Laconia, NH
Pulaski Technical College – Little Rock, AR
Mass Bay Community College – Ashland, MA
San Jacinto College – Pasadena, TX
Monroe Community College – Rochester, NY
South Texas Community College CAAT Center – McAllen, TX
Northampton Community College – Bethlehem, PA
Southwest Tennessee Community College – Memphis, TN
The Community College of Baltimore County – Baltimore, MD
St. Louis Training Center – St. Louis, MO
North Central Region Training Locations
St. Philips College – San Antonio, TX
Bismarck State College – Bismarck, ND
Tarrant County College – Fort Worth, TX
Cincinnati State Community College – Cincinnati, OH
Tulsa Tech Lemley Campus – Tulsa, OK
Columbus Automotive Distributors Warehouse – Columbus, OH
Wichita Area Technical College – Wichita, KS
Cuyahoga Community College – Parma, OH
West Texas Training Center – San Angelo, TX
Delta College – Saginaw, MI
Western Region Training Locations
Des Moines Area Community College – Ankeny, IA
American River College – Sacramento, CA
Dunwoody College of Technology – Minneapolis, MN
Arapahoe Community College – Littleton, CO
Fox Valley Technical College – Appleton, WI
Central New Mexico Community College – Albuquerque, NM
GM Training Center – Glendale Heights, IL
College of Southern Idaho – Twin Falls, ID
GM Training Center – Warren, MI
Community College of Southern Nevada – N. Las Vegas, NV
Grand Rapids Community College – Grand Rapids, MI
Cuyamaca College – San Diego, CA
Ivy Technical State College – Indianapolis, IN
Denver Training Center – Denver, CO
Michigan Technical Education Center – Traverse City, MI
Fresno City College – Fresno, CA
Minnesota State Community & Technical College – Moorhead, MN
Glendale Community College – Glendale, AZ
Sinclair Community College – Dayton, OH
GM Training Center – Burbank, CA
South East Technical Institute – Sioux Falls, SD
Las Positas Community College – Livermore, CA
Stark State College – North Canton, OH
Leeward Community College – Pearl City, HI
Waukesha County Technical College – Pewaukee, WI
MSU – Billings College of Technology – Billings, MT
Southeast Region Training Locations
Portland Community College – Portland, OR
Albany Technical College – Albany, GA
Renton Technical College – Renton, WA
Central Kentucky Technical College – Lexington, KY
Shoreline Community College – Seattle, WA
Central Piedmont Comm. College – Matthews, NC
Truckee Meadows Community College – Reno, NV
Florida Comm. College at Jacksonville – Downtown
University of Alaska – Anchorage, AK
Forsyth Technical Community College – Winston Salem, NC
Weber State University – Ogden, UT
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