2008 Chevrolet Avalanche Technical Service Bulletins

1,219 technical service bulletins (TSBs) are on record for the 2008 Chevrolet Avalanche. TSBs are notes manufacturers send to dealers about repair procedures for issues seen in the field. They are not recalls and do not by themselves mean a vehicle has a fault.

• 10166666Sep 11, 2019Electrical system. This informational bulletin provides information for the GM of Canada OnStar Cellular Communication Upgrade to 3G/4G LTE for vehicles that may need an upgrade.
• 10165874Sep 5, 2019Equipment. This Preliminary Information communication provides information to the technician about installing General Motors Accessory parts/kits. Technicians should refer to Service Information for information regarding most accessories. Technicians may also contact PARTECH and/or the Techline Customer Support Center for additional support.
• 10165127Aug 23, 2019Electrical system. This preliminary information bulletin provides information om Service Programming System (SPS) Error Codes E4398, E4399, E4403, M4404, M4413, E4414, E4423, E4491 or E6961).
• 10165124Aug 21, 2019Engine cooling. This bulletin provides information on identifying Non-GM Engine Calibrations for Gasoline Engines using the Tech 2 or GDS 2.
• 10164752Aug 7, 2019Engine cooling, Equipment. This Preliminary Information communication provides information to the technician about vehicles that have low oil pressure, no oil pressure, and/or engine noise. Technician will need to replace the oil pump, flush the oil cooler lines.
• 10163900Jul 26, 2019Equipment. This informational bulletin provides process information for the (GWM) and (WPC) parts return program.
• 10163659Jul 10, 2019Equipment. This Preliminary Information communication provides information to the technician about installing General Motors Accessory parts/kits. Technicians should refer to Service Information for information regarding most accessories. Technicians may also contact Partech and/or the Techline Customer Support Center for additional support.
• 10163272Jun 26, 2019Equipment. The intent of this technical bulletin is to identify aftermarket ALDL or DLC interface devices as potential sources for causing multiple customer concerns that do not have other diagnostic methods to identify them.
• 10163270Jun 26, 2019Steering. This technical bulletin provides a procedure to flush and bleed power steering system to correct a power steering noise or fluid leak concern that is caused during extremely low temperatures.
• 10163268Jun 26, 2019Equipment, Electrical system. This bulletin provides information for electrical ground repairs using new General Motors replacement fasteners with conductive finish.
• 10163261Jun 26, 2019Fuel system. This bulletin provides information on the TOP TIER Detergent Gasoline Licensed Brands and the TOP TIER Diesel Fuel Licensed Brands that are recommended for use in all GM vehicles and the TOP TIER FUELS website URL.
• 10163266Jun 25, 2019Equipment, Engine. This informational bulletin provides information on identifying Non-GM Engine Calibrations for Gasoline Engines using the Tech 2 or GDS 2.
• 10163273Jun 20, 2019Electrical system, Suspension, Electronic stability control. This preliminary information bulletin provides a procedure for suspension connector diagnosis and replacement due to the magnetically controlled suspension electrical connector not seated.
• 10163263Jun 11, 2019Electrical system, Equipment. This bulletin explains the labor operation numbers used for submitting warranty claims for module reprogramming and not when replacing a module.
• 10163215Jun 6, 2019Transmission and drivetrain. This Bulletin provides guidelines for Dealers Not Required and for Dealers Required to Contact the PQC for engine or transmission assembly replacement and explains the PQC process, GWM Transaction submission, vehicle service record retention and proper handling of assembly returns.
• 10162113Jun 4, 2019Equipment. This Preliminary Information document advises technicians that a condition may occur with the listed vehicles where the radio clock may not display the time. Dealer technicians are advised of a temporary proicedure to get the clock to display until Engineering has developed the permanent repair. The listed Cadillac, Pontiac, and Corvette RPO codes do not have a temporary repair at this time as Engineering continues…
• 10162106Jun 3, 2019Electrical system. This Preliminary Information communication provides information to the technician about the use of J-35616-64B terminal test probe, replacement terminals, and terminated leads. The J-35616-64B is the latest test probe released for checking tension or probing the .64 series terminals. The test probe terminal has been released in the terminal repair kit (J-38125-620H) located in Lear Tray 7 part number 963716-2.
• 10161932May 21, 2019Engine cooling. This informational bulletin advises of a new fuel injection kit used for decarbonizing the intake valves, and explains how toptier fuels should be used to reduce carbon build up.
• 10161968May 20, 2019Transmission and drivetrain. This bulletin provides information on the harmful effects of water or ethylene glycol in transmission fluid.
• 10161036May 20, 2019Suspension. This Preliminary Information communication provides information to the technician on the steps to help diagnose and repair vehicles with a rattle, squeak, clunk, thump, or bump. If published Service Information diagnostics do not lead to a repair for the concern. Technician should inspect the opposite side shock/strut for the cause of the concern.
• 10161016May 15, 2019Equipment, Electrical system. This Preliminary Information document advises technicians that a condition may occur with the listed vehicles where the radio clock may not display the time. Dealer technicians are advised of a temporary proicedure to get the clock to display until Engineering has developed the permanent repair. The listed Cadillac and Corvette RPO codes do not have a temporary repair at this time as Engineering continues to work…
• 10161011May 13, 2019Electrical system, Exterior lighting. This Preliminary Information communicates to technicians that the Daytime Running Lamps (DRL's) or the auto headlamps will not shut off when using the daytime running lamp disable switch (Which is part of the headlamp switch), if the vehicles was built for Canada (RPO Z49). These vehicles were built with different software that doesn't allow the DRL's or Auto headlamp to be shut off. Canada law prohibits disabling…
• 10161906May 9, 2019Tires. This informational bulletin provides information for dealers/technicians on Tire Radial Force Variation (RFV).
• 10161929May 8, 2019Equipment. This warranty administration bulletin provide policy information to cover GM's policy on performing GM covered vehicle services and maintenance on vehicles originating/sold in Canada.
• 10160987May 7, 2019Engine. This Preliminary Information communication provides information to the technician to not remove the torque converter bolts and start the engine as this may cause damage to the torque converter of the crankshaft on vehicles equipped with an automatic transmission.
• 10160983May 6, 2019Equipment, Engine. This Preliminary Information communication provides information to the technician about finding needle bearings during an oil change. Technician will gain access to the roller rockers to inspect them. Only replace the roller rocker that is missing needle bearings. Be sure to clean the oil drains to retrieve the needle bearings. Each roller rocker has 66 bearings.
• 10160700Apr 30, 2019Equipment. This Preliminary Information document advises technicians that a condition may occur with the listed vehicles where the radio clock may not display the time. Dealer technicians are advised of a temporary proicedure to get the clock to display until Engineering has developed the permanent repair. The listed Cadillac and Corvette RPO codes do not have a temporary repair at this time as Engineering continues to work…
• 10160683Apr 23, 2019Equipment. This Preliminary Information document advises technicians that a condition may occur with the listed vehicles where the radio clock may not display the time. Dealer technicians are advised of a temporary proicedure to get the clock to display until Engineering has developed the permanent repair. The listed Cadillac and Corvette RPO codes do not have a temporary repair at this time as Engineering continues to work…
• 10160682Apr 23, 2019Visibility (wipers, defrost, mirrors). This Preliminary Information communication advises the technician the steps on diagnosing the concern. Customer's sunroof operation intermittent, bind, noise, auto-reverse, and/or water leaks.
• 10160663Apr 12, 2019Equipment. This Preliminary information communicates an issue with aftermarket USB chargers causing SIR DTC's to set.
• 10160662Apr 12, 2019Electrical system. This Preliminary Information communication provides information to the technician about vehicles that the speedometer needle appears to be inaccurate. Dealer should advise the customer the specification for speedometer needle accuracy is +/- 2 MPH at any given speed when looking straight at the needle.
• 10160660Apr 12, 2019Electrical system. This Preliminary information communicates the need for dealers to contact SPAC to obtain qualified parts to repair SIR light on with B0081 SYM4B after replacing PPS kit.
• 10160133Apr 2, 2019Equipment, Transmission and drivetrain. This informational bulletin provides normal operating characteristics and diagnostic information on Manual transmissions.
• 10160135Apr 1, 2019Equipment. This informational bulletin provides information on proper use of floor mats.
• 10158859Mar 25, 2019Equipment. This informational bulletin provides information on interior cleaning products and what is offered to clean the interiors of GM vehicles.
• 10158855Mar 25, 2019Equipment. This informational bulletin provides the dealership with how to prep a vehicle for delivery to the customer to aid in higher CSi scores.
• 10158867Mar 22, 2019Equipment. This informational bulletin provides information on proper use of floor mats.
• 10158857Mar 22, 2019Equipment. This informational bulletin provides information for the dealer technician to gather as much information to help aid Engineers by completely filling out requested reports.
• 10158863Mar 15, 2019Equipment, Electrical system. This bulletin provides information for electrical ground repairs using new replacement fasteners with "conductive finish".
• 10158858Mar 7, 2019Fuel system, Equipment. This bulletin provides information on the TOP TIER Detergent Gasoline Licensed Brands and the TOP TIER Diesel Fuel Licensed Brands that are recommended for use in all GM vehicles and the TOP TIER FUELS website URL.
• 10156912Mar 6, 2019Engine cooling, Engine. This Preliminary Information communication provides information to the technician on the steps to diagnose and repair vehicles that may have a Service Engine Soon Malfunction Indicator Lamp on at low mileage. Technician may find Diagnostic Trouble Codes P0420 and or P0430 stored. Technician should be advised that the catalytic converter efficiency Diagnostic Trouble Codes P0420 and P0430 are disabled for the first…
• 10158860Mar 5, 2019Equipment, Engine cooling. This informational bulletin explains the normal characteristics of exhaust noise during active fuel management when in Three or Four Cylinder Mode.
• 10158838Mar 1, 2019Engine. This informational bulletin provides information on a normal engine operating condition for faster emission warm up time.
• 10154638Feb 28, 2019Transmission and drivetrain. This Bulletin provides guidelines for Dealers Not Required and for Dealers Required to Contact the PQC for engine or transmission assembly replacement and explains the PQC process, GWM Transaction submission, vehicle service record retention and proper handling of assembly returns.
• 10155073Feb 26, 2019Equipment. This informational bulletin provides the dealer with information on what to do when requesting a new key code for the customer.
• 10154306Feb 19, 2019Engine cooling. This Preliminary information communicates to the technician the need to inspect the induction system for potential icing issues in very cold ambient temperatures. To allow the ice to melt so that it can be drained from the related components. That any of the listed DTC's may set with or without poor engine performance.
• 10154299Feb 18, 2019Engine cooling. This Preliminary information communicates information that will need to be provided to TAC to aid in diagnosing if a vehicle comes in with misfire and DTC Codes P0300 - P0308 and/or P050D
• 10154641Feb 15, 2019Equipment. This warranty administration bulletin provides information regarding the field action courtesy transportation policy.
• 10155069Feb 12, 2019Brakes, Electrical system. This informational bulletin provides information for aftermarket trailer brake controller added to their vehicle, OR in lieu of the factory integrated trailer brake controller (ITBC) (RPO JL1).
• 10154289Feb 8, 2019Equipment. This Preliminary Information document advises technicians that a condition may occur with the listed vehicles where the radio clock may not display the time. Dealer technicians are advised to contact General Motors TAC for further instructions for a temporary repair until Engineering has developed the permanent repair. The listed Cadillac and Corvette RPO codes do not have a temporary repair at this time as…

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