2012 GMC Sierra Denali Technical Service Bulletins

1,703 technical service bulletins (TSBs) are on record for the 2012 GMC Sierra Denali. 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.

• 10100046Sep 21, 2016Brakes, Engine, Transmission and drivetrain, Electrical system. This preliminary information communication provides information to the technician with the steps on diagnosing and repairing vehicles that may have unwanted grade braking, reduced engine power with no driver information center messages “ brake pedal override feature “, transmission busy or frequent shifting up or down, and diagnostic trouble codes p057b, p057c, and/or p057d may or may not be set.
• 10118979Sep 19, 2016Engine cooling. This preliminary informational bulletin was created to inform Service Agents or Dealers, they may be charged back for parts and labor due to the turbo-chargers are being returned to the Warranty Parts center damaged, improperly assembled or missing parts and advising to properly package the complete turbochargers. (New models and RPOs added)
• 10118908Sep 19, 2016Equipment. This informational bulletin provides information on comebacks prevention information and using customer concern verification sheets (CCVS).
• 10118914Sep 16, 2016Electrical system. This informational bulletin explains the programming method quick reference guide for the IPC Odometer.
• 10118978Sep 14, 2016Electrical system. This preliminary bulletin provides a procedure to install adhesive back stock to the electrical connector for the steering wheel position sensor, to eleminate the excessive clearance/movement that causes the connector to loose contact and turns the Service Stabilitrak message on.
• 10118909Sep 14, 2016Tires. This GM of Canada New Vehicle Tire Warranty Program and GWM Transaction Submission Information Bulletin provides information for the new tires that the vehicle are equipped with and that they are covered by General Motors against defects in material or workmanship under the New Vehicle Warranty (Base Warranty Coverage) and for vehicles within this warranty period, the defective tires will be replaced on a pro rata…
• 10099981Sep 12, 2016Body and structure, Equipment. This preliminary information communication provides information to the technician about vehicles that have raised dents or ripple appearance in the side outer panel of the cargo box around the perimeter of the wheel house opening. Technician should first access the rear of the inner wheelhouse area through the tail lamp cavity and the front of the wheelhouse from under the vehicle, and coat the inner hem of the…
• 10099252Sep 9, 2016Engine. This preliminary information communication provides information to the technician about vehicles that have a malfunction indicator lamp on or engine misfire, rough idle, extended crank, or crank no start in some cases. Technician will need to perform published service information diagnostics. If technician finds carbon, an upper engine and valve cleaning should be performed.
• 10118911Sep 1, 2016Fuel system. This informational Bulletin provides Do's and Don'ts for maximizing gasoline engine fuel economy, other various tips and a list of websites for additional information.
• 10126063Jul 12, 2016Engine. This informational bulletin provides information on intake manifold inspection/replacement after severe internal engine damage.
• 10126062Jul 11, 2016Brakes. This informational bulletin provides information on installing the correct tires for vehicles with the condition of under hard acceleration at higher speeds, the traction control light will flash. Or, they may come in for ABS or general handling/braking concerns.
• 10100822Jul 11, 2016Engine. This informational bulletin provides the technician with what may happen to an engine due to lack of maintenance.
• 10088863Jun 22, 2016Equipment, Engine cooling. This informational bulletin is a supplement to the duramax diesel coolant system fill and head gasket replacement procedure found in the service information.
• 10089229Jun 20, 2016Electrical system. This informational bulletin provodes information on the gm of canada onstar cellular communication upgrade.
• 10089247Jun 10, 2016Equipment. This informational bulletin provides information on the proper use of floor mats.
• 10114105May 31, 2016Engine, Electrical system. This informational bulletin provides information on identifying non-GM (aftermarket) engine calibrations for gasoline engines using Tech 2 or GDS 2.
• 10126060May 27, 2016Electrical system. 15801A - Customer Satisfaction Program. This bulletin is being revised to add a note at the beginning of the Service Information section. The 2016 model year GMC Sierra HD vehicle, and an increase in population has also been added. Vehicles equipped with Duramax Diesel Engine (RPO LGH or LML) and Ambulance Upfitter or Fire Truck Upfitter (RPO YF2 or ANM), may have a condition in which the emission control system as…
• 10114101May 25, 2016Wheels. This informational bulletin updates General Motor's position on refinishing aluminum wheels. GM does not endorse any repairs that involve welding, bending, straightening or re-machining. Only cosmetic refinishing of the wheel's coatings, using recommended procedures, is allowed.
• 10118547May 20, 2016Tires. This informational bulletin provides information on the temporary tire flat spotting condition.
• 10114107May 20, 2016Electrical system. This informational bulletin provides information on service programming system (SPS) errors.
• 10126052May 16, 2016Equipment. 14520B Special Coverage. Some 2008-2009 model year Chevrolet Silverado and GMC Sierra light-duty vehicles registered in Canada or 2007, and 2010-2013 model year Chevrolet Silverado and GMC Sierra light duty vehicles registered in or previously registered in Maine, New Hampshire, New York, and Vermont or in the Canadian provinces New Brunswick, Newfoundland, Nova Scotia, Prince Edward Island, Ontario, and Quebec may…
• 10126051May 16, 2016Engine, Electrical system. 15801 - Customer Satisfaction Program. (2012 model year repair suspended) Vehicles equipped with Duramax Diesel Engine (RPO LGH or LML) and Ambulance Upfitter or Fire Truck Upfitter (RPO YF2 or ANM), may have a condition in which the emission control system as designed will limit speed under certain conditions. The EPA has approved General Motor?s request to remove the emission control system speed limitations on…
• 10118546May 16, 2016Equipment. This informational bulletin provides information on a new U.S. dealer special tool loan program.
• 10118545May 16, 2016Electrical system, Equipment. This informational bulletin provides warranty policy information on revised wiring repair labor operations and required additional information.
• 10134545May 13, 2016Electrical system. This informational bulletin provides warranty information on accessory power outlet and trailer lighting fuse replacement.
• 10134536May 6, 2016Equipment. This warranty administration bulletin provides information on GM?s policy on performing GM covered vehicle services and maintenance on vehicles originating/sold in Canada.
• 10113973Mar 31, 2016Electrical system. This Preliminary Information communication provides information to the technician about vehicles that have a Diagnostic Trouble Code B101D stored in Telematics Communication Interface Control Module. Technician will check Global Warranty Management system for customer satisfaction program 15086 status. If the status of the customer satisfaction program 15086 was not completed follow the steps to get the Telematics…
• 10112831Mar 30, 2016Wheels. This informational bulletin provides information on chemical staining, pitting, and corrosion on wheels and the proper cleaners to use to fix the conditions due to multiple causes.
• 10113963Mar 29, 2016Fuel system, Equipment. This Preliminary Information communication provides information to the technician about the multiple alternative gaseous fuel vehicles General Motors offers. Chevrolet Express and GMC Savana vans 2011 through 2016 offered a dedicated Compressed Natural Gas system. Refer to the latest version of PI0417 for more information. Chevrolet Express and GMC Savana 3500, 4500 Cutaway Vans 2012 through 2016 offered a…
• 10112829Mar 29, 2016Equipment. This preliminary informational bulletin provides information on GM is implementing a new service strategy that uses a set of universal coaxial repair kits to service vehicles. This only applies to cable used for high frequency signals, such as cellular (OnStar®), satellite radio (XM) and GPS (navigation). The kits do NOT apply to the AM/FM cables.
• 10113959Mar 24, 2016Electrical system. This Preliminary Information communication provides information to the technician the steps to diagnose and repair vehicle with a Service Charging System message or Service Engine Soon Malfunction Indicator Lamp and the Engine Control Module may have set a P0621 and/or P0622. These concerns could be caused by the generator wiring harness rubbing on the Air Conditioning compressor line and shorting the circuits.
• 10112821Mar 24, 2016Electrical system. This preliminary informational bulletin provides information on GM Accessory Remote start not working with onstars remotelink phone applications
• 10112819Mar 23, 2016Engine. This informational bulletin provides information on Identifying Non-GM (Aftermarket) Engine Calibrations for Gasoline Engines Using Tech 2® or GDS 2 (U.S. and Canada)
• 10112817Mar 23, 2016Equipment. This informational bulletin provides information on Clean Exhaust Filter See Owners Manual Now or Cleaning Exhaust Filter Keep Driving Until Message is Cleared Message Displayed on DIC, DTC P2463 May Be Set
• 10113950Mar 21, 2016Engine, Brakes, Electrical system. This Preliminary Information communication provides information to the technician with the steps on diagnosing and repairing vehicles that may have unwanted grade braking, reduced engine power with no Driver Information Center messages ? Brake Pedal Override Feature ?, transmission busy or frequent shifting up or down, and Diagnostic Trouble Codes P057B, P057C, and/or P057D may or may not be set.
• 10113949Mar 21, 2016Suspension. This Preliminary Information communication provides information to the technician with the steps to diagnosis and repair vehicles with various handling, vehicle dynamics concerns, noises from the suspension or underbody, or issues related to damaged suspension components. Before any in-depth diagnostics are performed, be aware that various issues could occur if the vehicle has been modified and inform the customer…
• 10113935Mar 16, 2016Engine cooling. This Preliminary Information communication provides information to the technician that some vehicles may have a Service Engine Soon lamp, engine misfire on cylinder 1, 4, 6, or 7 and/or tick noise. Technician will follow service information diagnosis first. If service information diagnosis does not isolate the cause of this concern perform a cylinder deactivation active fuel management system compression test in…
• 10112795Mar 15, 2016Equipment. This informational bulletin provides information on what is needed to be prepared for TAC, caller preparedness and checklists and contacting U.S. technical Assistance and the use of strategy based diagnostics
• 10112791Mar 14, 2016Equipment. This warranty administration bulletin provides information on Courtesy Transportation and Roadside Assistance Programs
• 10112789Mar 14, 2016Visibility (wipers, defrost, mirrors). This technical bulletin provides a procedure to relearn the power folding mirriors and road test to correct a conditon of power fold away mirriors glass shakes or flutters at normal driving speeds
• 10113921Mar 8, 2016Equipment. This Preliminary Information communication advises the technician after the OnStar Canada upgrade the OnStar Vehicle Diagnostic Email report is inoperative. Please communicate to the customer that we apologize for this inconvenience and that General Motors is working on a solution for this concern.
• 10113918Mar 8, 2016Electrical system. This Preliminary Information communication provides the technician with the steps on how to diagnose vehicles with a no crank with multiple Diagnostic Trouble Codes set in several different modules with Regular Production Option Code HP2. Technician will retrieve all the Diagnostic Trouble Codes that are set current in the vehicle. When there are multiple Diagnostic Trouble Codes technician may wonder were to start…
• 10112779Mar 7, 2016Electrical system. This informational bulletin provides information on vehicles may rock or move slightly forward or rearward while in Park at start up after cold soak and that this is considered a normal conditon and no repairs are necessary
• 10113914Mar 4, 2016Engine cooling. This Preliminary Information communication provides information to the technician about gasoline powered cars, mid-size trucks, light duty trucks, and heavy duty trucks with premature catalytic converter failures. It is recommended to inspect for a poor crimp on the coil grounds ring terminal at the engine block for the bank with the concern and repair the wire.
• 10113907Mar 3, 2016Engine cooling. This Preliminary Information communication advises the technician that vehicles with engine Regular Production Option Code LGH or LML may have an Exhaust Fluid Quality Poor message displayed on the Driver Information Center. Technician will need to complete the current Service Information diagnostic for any current Diagnostic Trouble Codes or symptoms found.
• 10112773Mar 3, 2016Electrical system. This informational bulletin provides information on If the radar does not see any vehicles, structures, or objects for 15-25 minutes of driving, the system may think its blocked and display the ?Side Object Detection System Disabled? message.
• 10113901Mar 2, 2016Engine, Transmission and drivetrain. This Preliminary Information communication advises the technician vehicles with Regular Production Option Code HP2 may stall after shifting out of park quickly after a key crank. The 2-Mode Hybrid requires a certain amount of engine run time (1-2 seconds) from initial key crank before moving the gear shift indicator out of park. This is a normal condition and no parts should be replaced to try and resolve this…
• 10113898Mar 2, 2016Equipment. This Preliminary Information communication informs the technician Polyalkylene Glycol is not compatible with the Hybrid Polyester oil. When vehicles with Hybrid Air Conditioning system have been injected with any commercially available Ultra Violet dye the system should be flushed of all system oil. Most ultra violet dyes contain Polyalkylene Glycol oil.
• 10112771Mar 2, 2016Equipment. This informational bulletin provides information on New Vehicle Pre-Delivery Inspection (PDI) - Delivering Quality Vehicles and Generating Higher CSi Scores
• 10112770Mar 2, 2016Electrical system. This informational bulletin provides information on Interior Cleaning - Instrument Panel (IP), Hard or Plastic Surfaces, Seats, Carpet, Leather, Vinyl, Fabric Cleaner, Stain Remover, Restorer - Product Availability

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