2012 GMC Sierra Technical Service Bulletins

279 technical service bulletins (TSBs) are on record for the 2012 GMC Sierra. 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.

• 10108645Jul 19, 2017Tires. This informational bulletin provides information on the temporary tire flat spotting condition.
• 10108599Jul 17, 2017Suspension. This technical bulletin provides a procedure to lube the rear leaf springs on vehicles with the condition of a squeak noise originating from the rear of the vehicle.
• 10113404Feb 8, 2017Fuel system. This Preliminary Information communication provides information to the technician about vehicles that may have a bump feel or clunk noise at a stop or on launch. Dealer should communicate to the customer this condition is a normal operating characteristic of their vehicle. The bump clunk issue may be due to fuel movement in the fuel tank when not completely full. The condition is eliminated after completely filling…
• 10113364Jan 31, 2017Brakes. This Preliminary Information communication advises the technician that the Hydro-Boost is not serviceable and will need to be replaced if the brake pedal moves or applies on its own at a full turn.
• 10100822Jul 11, 2016Engine. This informational bulletin provides the technician with what may happen to an engine due to lack of maintenance.
• 10078601Apr 4, 2016Equipment, Electrical system. This preliminary information communication advises the technician that the part restriction for the accessory dc power control module and the seal kit has ended.
• 10113889Mar 1, 2016Equipment. This Preliminary Information communication provides the technician with a list of modules to check for communication with the scan tool, if the navigation radio does not display the current Hybrid mode. Dealer will use a scan tool to check communication with Accessory Direct current Power Control Module, Air Condition control module, Drive Motor Generator Power Inverter Module, Engine Control Module, Battery Energy…
• 10113888Mar 1, 2016Engine. This Preliminary Information communication provides steps the technician will uses to diagnose and repair vehicles that have low oil pressure after an oil change with the engine Regular Production Option Code L20, L77, L94, L96, L99, L9H, LC8, LC9, LH9, LMF, LMG, LY6, or LZ1. Vehicle may have Service Engine Soon lamp with Diagnostic Trouble Code P0521 or Low Oil Pressure message on the instrument panel. Dealer will…
• 10113887Mar 1, 2016Electrical system, Brakes. This Preliminary Information communication provides the technician with the additional steps that are needed to help perform a successful brake bleed on the 2-Mode Hybrid with Regular Production Option Code HP2. With a battery maintainer installed on the vehicle use brake pressure bleeder that maintains 30 psi for the entire bleed procedure.
• 10114431Feb 23, 2016Equipment. This Preliminary Information communication provides information to the technician about vehicles that may have an issue when using Bluetooth voice recognition with an iPhone. Technician should work with the customer to insure the phone contacts to not have any Emojis loaded to any contact.
• 10096026Feb 11, 2016Equipment. 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.
• 10095901Feb 9, 2016Engine. This preliminary information communication provides information to the technician about vehicles that may have a cold engine tick noise for 50 seconds at start up. Technician determines if the tick noise is possibly coming from the exhaust manifold, as this noise could easily be mistaken for an engine tick noise.
• 10112299Jan 27, 2016Equipment. This informational bulletin provides information on Part Restriction and Ordering Process Information for OnStar Vehicle Communication Interface Modules (VCIM) (GMNA Only)
• 10112292Jan 26, 2016Transmission and drivetrain. This preliminary informational bulletin provides a procedure to reset the transmission adapts and test drive in additon to a transmission control module reprogram to correct a harsh or tie up feeling from 6-4 downshift
• 10112287Jan 25, 2016Steering. This preliminary informational bulletin provides a procedure to apply dielectric grease and a piece of adhesive shim stock to the steering angle sensor connector to correct a condition of service stabilitak message displayed in DIC and DTC C0455 or C0710
• 10112278Jan 19, 2016Steering. This technical bulletin provides a procedure to flush and bleed the power steering system to correct a condition of power steering noise or fluid leak from power steering pump, gear or high pressure hose during extreme low temperature conditions.
• 10112272Jan 14, 2016Engine. This informational bulletin provides information on close coupled converters and there affect on newly installed engines or engines during there break in period.
• 10112264Jan 7, 2016Body and structure. This informational bulletin provides information on removing paint stains on the under side of protective shipping film
• 10075716Nov 6, 2015Transmission and drivetrain. Some customers may comment that the vehicle has reduced acceleration at low speed and/or transmission is slipping from a launch. Technicians may find DTC P0751 set or stored in history. This condition may be caused by the Clutch Select Solenoid Valve 2 (359), located in the lower valve body, sticking in its bore resulting in a 4th gear start. Note: This condition can be very intermittent and difficult to duplicate.
• 10113810Aug 18, 2015Equipment. This warranty administration bulletin provides dealership personnel with policy and procedure requirements for essential tools that include consumable parts (U.S. Only).
• 10113796Aug 6, 2015Equipment. This informational bulletin provides information on the proper use of GM floor mats.
• 10113792Aug 4, 2015Engine cooling. This informational bulletin provides information to technicians regarding intake manifold inspection/replacement after severe internal engine damage.
• 10113788Aug 3, 2015Equipment. This warranty administration bulletin provides policy information on courtesy transportation and roadside assistance programs.
• 10059084Aug 1, 2015Engine cooling. Gmc/chevrolet: to assist engineering product feedback, parts for duramax diesel engine, has been placed on restrictions, by product quality center (pqc). Model 2010-16 duramax.
• 10059078Aug 1, 2015Engine, Electrical system. Cadillac/chevrolet/gmc: on some vehicles and/or trucks, instrument cluster will illuminate, after an oil change, indicating low oil pressure and/or ses lamp will illuminate. Model 2007-13 canyon, sierra, savana, yukon, cts-v, escalade, avalanche, camaro ss, colorado, corvette, express, silverado, suburban, tahoe.
• 10043893Aug 1, 2015Engine cooling, Fuel system. Gm: gauge fluctuation, various dtcs, and the wiring harness may be chafing/rubbing on a/c line. *js updated 5/22/12. *js updated 2/5/16.
• 10114597Jul 9, 2015Transmission and drivetrain, Equipment. This Preliminary Information communication provides information to the technician of an engine power reduced message on the driver information center after performing the Canada Onstar® 4G upgrade. If the concern is present park the vehicle outside and call General Motors Technical Assistance Center.
• 10113703Jun 23, 2015Engine cooling, Electrical system. This technical bulletin provides repair information for repairing the IP to body harness connector to correct a customer concern for intermittent Malfunction Indicator Lamp (MIL) illuminated with Reduced Engine Power displayed and DTC P2138 set.
• 10113701Jun 22, 2015Equipment. This informational bulletin provides information for dealers/technicians on when and how to submit a Field Product Report (FPR) (U.S. Dealers Only).
• 10113688Jun 12, 2015Equipment. This informational bulletin provides dealership personnel with Global Warranty Management (GWM), Warranty Parts Center (WPC), and Parts Return Program information.
• 10113687Jun 11, 2015Equipment. This informational bulletin provides information on a GM of Canada OnStar® cellular communication upgrade.
• 10059076Jun 1, 2015Engine. Chevrolet/gmc: when ambient temperature reaches 103f or greater and accelerating from a stop, there is a lack of power from engine. Model 2010-14 avalanche, silverado, suburban, tahoe, sierra, yukon.
• 10058756Jun 1, 2015Transmission and drivetrain. Gmc/chevrolet: tsb contains an owner's notification letter. Select document search button below. When shifting from first gear to second gear, harsh shifting is experience and malfunction indicator lamp (mil) will illuminate. Model 2012 silverado, express, colorado, sierra, savana, canyon.
• 10113662May 27, 2015Fuel system, Other or unknown. This informational bulletin provides dealership personnel with information on flexible fuel vehicles (FFVs) and the usage of E85 fuel in GM vehicles.
• 10113658May 22, 2015Engine cooling. This informational bulletin provides technicians with updated information to help identify the differences between what is considered a fluid leak, and what is considered seepage.
• 10113657May 21, 2015Engine cooling. This informational bulletin provides information to technicians regarding intake manifold inspection/replacement after severe internal engine damage.
• 10113654May 15, 2015Equipment. This informational bulletin provides information on a GM of Canada OnStar® cellular communication upgrade.
• 10113652May 15, 2015Equipment. This informational bulletin provides information on a GM of Canada OnStar® cellular communication upgrade.
• 10044218May 1, 2015Suspension. Chevrolet/gmc: see document search button for owner letter. On some 2011-2012 trucks, a grinding noise and vibration would be noticeable due to the rear axle right hand side bearing adjuster clip and bolt may come loose inside of rear axle. *pe updated 9/6/12. *pe updated 7/18/14. *pe updated 11/6/15.
• 10114470Apr 17, 2015Equipment, Electrical system. This Preliminary Information communication provides information to the technician about vehicle that may have an OnStar system that has progression tones when pressing the blue or red button. Technician will need to call General Motors Technical Assistance Center with the scan tool data from the OnStar system.
• 10113785Mar 31, 2015Equipment. This informational bulletin adds the 2014 and 2015 model years to information of a language change for OnStar System (U.S. and Canada only).
• 10113775Mar 26, 2015Equipment. This informational bulletin provides information on the Product Quality Center (PQC) assembly replacement process for Service Agents not required to contact PQC prior to assembly replacement.
• 10113773Mar 26, 2015Equipment. 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.
• 10113770Mar 24, 2015Brakes. This informational bulletin provides technicians with a brake lathe calibration procedure.
• 10113753Mar 16, 2015Equipment. This preliminary informational bulletin provides technicians with diagnostic tips for a customer concern of odor emanating from HVAC system.
• 10113752Mar 16, 2015Electrical system. This informational bulletin communicates GM wiring repair strategy information.
• 10113745Mar 10, 2015Equipment. This warranty administration bulletin communicates GM required operating procedures (U.S. only) for service operations.
• 10113741Mar 10, 2015Equipment. This warranty administration bulletin provides retail and wholesale service personnel with the policies and the warranty claims submission procedures that support Labor Operation 0600014 - Suspected Tampering or Vehicle Modifications.
• 10113740Mar 9, 2015Equipment. This informational bulletin provides dealership personnel information on unscheduled supplemental services (including flushing services and additives) and proper use of GM simplified maintenance schedules (Canada only).
• 10113738Mar 6, 2015Engine cooling. This informational bulletin provides technicians with diagnostic tips for preventing oil leaks after changing oil and filter.

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