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.

• 10137343Feb 27, 2018Engine. This informational bulletin provides a revision for 09-06-04-015B (Vehicles Sitting Outside on Dealer Lots for Extended Periods with Hard Start/No Start Condition) to add the 2015-2018 model years.
• 10137283Feb 27, 2018Engine, Transmission and drivetrain. This Bulletin provides guidelines 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.
• 10137344Feb 15, 2018Electrical system, Engine. This informational bulletin provides information on identifying Non-GM Engine Calibrations for Gasoline Engines using the Tech 2 or GDS 2 9U.S. and Canada
• 10137345Feb 13, 2018Equipment. This warranty administration bulletin provides information on Dealer Empowerment Labor Operations and Customer Enthusiasm.
• 10129889Feb 13, 2018Body and structure. This Preliminary Information communication provides information to the technician about vehicles that have a lean to the left or right. Technician will need to measure fender wheel-opening heights, front and rear, to quantify vehicle lean. Fender wheel-opening heights are related to, but distinct from, trim height. The front wheel-opening height is known as P height, and the rear wheel-opening height is known as R…
• 10137347Feb 6, 2018Equipment. This preliminary information bulletin provides a procedure for installing a aftermarket tool or utility box.
• 10137342Feb 2, 2018Equipment, Electrical system. This informational bulletin provides technicians with information on available BCM calibrations to restore bulb outage detection on vehicles produced by a second stage manufacturer (Upfitter), and/or turn signals flash fast after factory box removed.
• 10137346Feb 1, 2018Fuel system, Other or unknown, Engine cooling. This preliminary informational bulletin provides repair information to correct customer concerns of an exhaust leak or vibration/rattle noise at approximately 900 RPM, fuel smell/white smoke noted intermittently (usually after coming to a stop), and/or an oily substance noted on exhaust downpipe.
• 10137341Feb 1, 2018Electrical system, Equipment. This warranty administration bulletin provides policy information on the requirements for battery testing and warranty replacements.
• 10139279Jan 31, 2018Engine cooling. This informational bulletin explains how the catalytic converters may need an inspection, cleaning or replacement if debris have entered the exhaust system.
• 10139282Jan 29, 2018Electrical system. This informational bulletin provides information to diagnose batteries that have set for a long period of time and/or cold weather climates and testing those batteries.
• 10137268Jan 26, 2018Fuel system. This technical bulletin provides a procedure to replace the fuel tank and internal parts if found expanding and contacting the drive shaft.
• 10129097Jan 25, 2018Engine. 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.
• 10129093Jan 24, 2018Exterior lighting. This Preliminary Information communication provides information to the technician about vehicles that have a Service Engine Soon Malfunction Indicator Lamp on, engine misfire, and/or engine noise. Technician may find Diagnostic Trouble Codes P0300-P0308.
• 10129089Jan 23, 2018Wheels. This Preliminary Information communication provides information to the technician about changing the tire and wheel size on vehicles. General Motors will only support a tire calibration for tires that have been sized, tested and designed for the vehicle in question and its applications. Technician should not use the information that is provided by the antilock braking system tire size selection.
• 10129073Jan 18, 2018Engine. 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.
• 10139280Jan 17, 2018Visibility (wipers, defrost, mirrors). This warranty bulletin explains how to determine if an outside mirrior was damaged by the customer and what is considered warranty and non-warranty.
• 10139284Jan 12, 2018Engine cooling. This preliminary informational bulletin provides information on Damaged, Disassembled or Improperly Packaged Turbochargers Returned to Warranty Part Center.
• 10139277Jan 12, 2018Equipment. This information bulletin provides a procedure on how to remove the paint stain that may present itself under the shipping film.
• 10137269Jan 9, 2018Transmission and drivetrain. This informational bulletin provides information on Click or Tick Noise on 3-4 Shift that it should be considered a normal characteristic.
• 10129057Jan 9, 2018Other or unknown, Fuel system. This Preliminary Information communication provides information to the technician about vehicles that have an oil leak shortly after a cold start when extremely low ambient temperatures are present. Technician will need to clean the area of the oil leak, clean and dry the PCV hoses, and replace the oil fill cap with part number 12589430.
• 10139278Jan 8, 2018Electrical system, Transmission and drivetrain, Visibility (wipers, defrost…. This warranty bulletin provides labor operation numbers for customer concerns that cant be duplicated.
• 10139276Jan 4, 2018Tires. This bulletin contains information for the new tires that the vehicle is equipped with and that they are covered by General Motors against defects in material or workmanship under the New Vehicle Warranty (Base Warranty Coverage). For vehicles within this warranty period, defective tires will be replaced on a pro rata adjustment basis according to the published distance-based schedule.
• 10129051Jan 4, 2018Equipment. 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.
• 10139209Dec 21, 2017Fuel system. This informational 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.
• 10126972Dec 18, 2017Electrical system. This Preliminary Information communication provides information to the technician about vehicles that have an OnStar system that will not power up. Technician should turn off the ignition and cancel retained accessory power. After the vehicle has powered down remove power to the OnStar module for five minutes. After the power has been removed for five minutes, if the OnStar system is working release the vehicle.
• 10139216Dec 15, 2017Visibility (wipers, defrost, mirrors). This Bulletin provides procedures to correct a condition of Power Foldaway Mirror Glass Shake, Flutter at Normal Driving Speeds
• 10139208Dec 15, 2017Equipment. This warranty administration bulletin provide policy information on required operating procedures.
• 10139179Dec 12, 2017Transmission and drivetrain. This informational bulletin provides information on Some vehicles may rock or move slightly forward or rearward while in Park at start up after cold soak. This condition may be accompanied by a clunk noise. This is a slight movement that is more often seen visually, rather than felt, when viewed from the outside and using the auto-start feature, if equipped.
• 10139212Dec 11, 2017Equipment. This warranty administration bulletin provide policy information for courtesy transportation and roadside assistance programs.
• 10139182Dec 11, 2017Steering. 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.
• 10139185Dec 7, 2017Electrical system. This informational bulletin provides information to diagnose batteries that have set for a long period of time and/or cold weather climates and testing those batteries.
• 10139181Dec 7, 2017Equipment. This informational bulletin provides information on dealer responsibility for cargo carrying capacity labeling and the part numbers for the labels.
• 10139168Dec 7, 2017Fuel system. This technical bulletin provides a procedure to replace the fuel tank and internal parts if found expanding and contacting the drive shaft.
• 10139211Dec 4, 2017Equipment. This informational bulletin provides information to dealership personnel on enhancing field product reports with digital pictures.
• 10139099Nov 30, 2017Equipment. This technical bulletin provides a procedure to clear the codes and re-evaluate the XM radio channels to correct a condition of audio muting when listening to some Sirius XM channels but if they change channels they will find others that experience normal audio. This could be due to interference from transmitting sources outside of Sirius XM?s frequency range.
• 10139088Nov 30, 2017Equipment, Engine cooling. This informational bulletin provides guidelines and diagnostic/repair information to technicians regarding vehicle engine oil consumption.
• 10139095Nov 22, 2017Equipment. This bulletin describes the Dealer special tool loan program process.
• 10139089Nov 22, 2017Equipment, Transmission and drivetrain, Engine. This informational bulletin provides information to dealership personnel on automatic transmission shift and engine drivability concerns and/or MIL ON due to aftermarket oil bath air filter use.
• 10139092Nov 21, 2017Steering, Equipment. This technical bulletin provides repair information for installing a new stabilizer shaft bracket to correct a customer concern of on a clunking noise originating from the front of the vehicle that is more predominant during turns or traveling over bumps.
• 10125126Nov 20, 2017Electrical system. This Preliminary Information communication a diagnostic tip if the high speed lan bus is shorted to ground, which can cause the BCM to appear off line.
• 10139118Nov 17, 2017Equipment. This informational bulletin provides a listing of the parts availability for coax repair procedures and what is needed to complete some repairs.
• 10139090Nov 17, 2017Engine, 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.
• 10125106Nov 7, 2017Electrical system. This Preliminary Information communication provides information to the technician about vehicle's odometer appears to be inaccurate relative to a known distance traveled. Technician should obtain a hand-held GPS unit to test the odometer. If a hand held GPS unit is not available, the only other option is to verify the miles traveled using a surveyor's wheel or a dynamometer.
• 10134594Oct 25, 2017Equipment, Engine. This warranty administration bulletin provides dealership personnel with policy and procedure requirements for essential tools that include consumable parts (U.S. Only).
• 10134621Oct 24, 2017Equipment. This informational bulletin provides information for the IPC odometer programming method quick reference guide.
• 10134593Oct 11, 2017Equipment. 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.
• 10123227Oct 5, 2017Electrical system. This Preliminary Information communication provides information to the technician about vehicles that have a Diagnostic Trouble Code B101D-37 history in the Vehicle Communication Interface Module or telematics communication interface control module. Engineering has determined that this code will only display in history on the scan tool and will not cause issues with OnStar system operation.
• 10123222Oct 3, 2017Equipment, Electrical system. This Preliminary Information communication provides information to the technician about what XM offerings are available for vehicles. A dealer or customer can access the website listed below for vehicle specific XM offerings and availability.
• 10190338Oct 1, 2017Equipment. Essential Tools that Include Consumable Parts (U.S. Only)

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