2018 GMC Sierra Denali Technical Service Bulletins

947 technical service bulletins (TSBs) are on record for the 2018 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.

• 10159572Sep 14, 2017Equipment. This informational bulletin explains the importance of maintaining the vehicle.
• 10159294Sep 14, 2017Seat belts. 17366 Stop Delivery. Effective immediately, stop the delivery of certain vehicles in new vehicle inventory. The GM field action number is 17366. The driver?s and front passenger?s seat belt retractors in these vehicles may have been built with different torsion bars than were used in testing the vehicles. Until further instructions are received, involved vehicles that are in dealers?
• 10159569Sep 12, 2017Equipment, Engine cooling. This informational bulletin advises the possible issues that may occur using a scotch brite pad or highly abrasive disk on gasket sealing surfaces or reused parts.
• 10156999Sep 11, 2017Equipment. 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.
• 10159578Sep 7, 2017Electrical system, Equipment. This informational bulletin provides information on approved warranty part numbers for original equipment batteries
• 10159577Sep 7, 2017Equipment. This informational bulletin provides technicians and dealership personnel with spray-in bed liner general information and repair procedures.
• 10159576Sep 7, 2017Engine cooling, Equipment. 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.
• 10159582Sep 6, 2017Engine cooling, Fuel system. This informational bulletin provides information on Diesel Exhaust Fluid (DEF) and the proper use of the DEF system.
• 10156990Sep 6, 2017Equipment. 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.
• 10159574Sep 5, 2017Engine. This informational bulletin provides information on Internal Engine Noise or Damage After Oil Filter Replacement.
• 10159571Sep 5, 2017Fuel system. This Informational Bulletin provides information on availability of Diesel Fuel additives.
• 10140416Aug 31, 2017Steering. This engineering informational bulletin is requesting information from the field on vehicles that have the condition of a service power steering message displayed and or a power steering fluid leak.
• 10140379Aug 31, 2017Engine. This informational bulletin provides information for specification with the engine oil for the Duramax 6.6L engine.
• 10140375Aug 31, 2017Engine cooling. This technical bulletin provides to the technician a possible issue with the NOx sensor wiring harness and what to do if corrosion is found.
• 10140304Aug 31, 2017Engine cooling. This Technical bulletin provides a procedure on how to perform a quick test to check if the DPF is the cause of excessive soot from the tailpipe.
• 10140303Aug 31, 2017Engine. This informational bulletin provides information on common diesel engine tick noises and how they are considered part of normal operation and no parts should be replaced for these conditions.
• 10140293Aug 31, 2017Engine cooling. This informational bulletin provides information on Intake Manifold Inspection/Replacement After Severe Internal Engine Damage.
• 10140298Aug 30, 2017Equipment. 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.
• 10140406Aug 23, 2017Equipment, Body and structure. Thins informational bulletin provides information on Paint-less Dent Repair Process.
• 10140394Aug 22, 2017Electrical system, Back-over prevention (rear camera). This informational bulletin provides information on new software to correct the rear camera display being to bright.
• 10140295Aug 22, 2017Electrical system. This informational bulletin provides information on OnStar® VCIM is currently restricted parts. By working closely with our dealers and technicians, through the part restriction process, the General Motors team will gain a better understanding of any field concerns that may develop.
• 10137727Aug 21, 2017Engine. This Preliminary Information communication provides information to the technician about engine block of possible cylinder bore damage, scoring or out of round as the possible cause of engine oil consumption, misfire, cylinder leakage or blow by. Technician will need to inspect the engine for Cylinder damage or scoring, An out of round cylinder bore, Dirt intrusion, and Catalytic Converter failure.
• 10137722Aug 16, 2017Equipment. The PI was created to advise of an engineering investigation for a concern of unable to connect toOnStar Virtual Advisor when selecting "New Destination" in the OnStar menu.
• 10140377Aug 11, 2017Electrical system. This informational Bulletin provides some Diagnostic Tips for preventing unnecessary HV Battery Pack replacement.
• 10140374Aug 9, 2017Equipment. This informational bulletin provides information for the service parts identification (SPID) label replacement.
• 10137705Aug 9, 2017Equipment. This Preliminary Information communication provides information to the technician about customers that may complain of various concerns when using Bluetooth components. Technician should use the Preliminary Information to gather information from the customer on their Bluetooth device and the concern they are having before calling General Motors Technical Assistance Center.
• 10140296Aug 7, 2017Equipment. This warranty administration bulletin provide policy information on required operating procedures.
• 10140299Aug 3, 2017Electrical system. This technical bulletin provides a procedure to perform diagnosis before just replacing the battery sensor module.
• 10140297Aug 2, 2017Equipment. This warranty administration bulletin provide policy information on warranty and policy exchange program for electronic products for U.S. and Canada dealers only.
• 10137665May 23, 2017Equipment. This informational bulletin explains the Road Force balancers and what they can do for customer concerns.
• 10137600May 22, 2017Wheels. This informational bulletin provides information on Chemical Staining, Pitting, Corrosion and/or Spotted Appearance of Chromed Aluminum Wheels.
• 10137680May 19, 2017Brakes. This preliminary informational bulletin provides information regarding the normal characteristic of instrument panel red brake light intermittently comes on.
• 10137601May 17, 2017Engine. This informational bulletin advises the possible issues that may occur using a scotch brite pad or highly abrasive disk on engine surfaces.
• 10137605May 15, 2017Equipment. This informational bulletin provides information on General Motors Dealership Critical Equipment Requirements and Recommendations.
• 10137659May 12, 2017Equipment. This informational bulletin provides information for dealers/technicians on the availability of a new spring replacement tonneau latch to replace an original quarter turn latch that has broken.
• 10137640May 10, 2017Transmission and drivetrain. This warranty administration bulletin provide policy information for automatic transmission Oil Cooler Flush and flow test.
• 10137635May 10, 2017Fuel system, Equipment. 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.
• 10137676May 5, 2017Equipment. This preliminary informational bulletin provides technicians with information on the normal condition of white, milky or cloudy appearance of front differential fluid.
• 10137602May 4, 2017Equipment. This informational bulletin provides the dealership with how to prep a vehicle for delivery to the customer to aid in higher CSi scores.
• 10137603May 2, 2017Equipment. This warranty administration bulletin provide policy information on required operating procedures.
• 10138086Mar 29, 2017Suspension. This informational bulletin provides information on Driveline Clunk Noise and what is acceptable and what is considered normal operations.
• 10138087Mar 17, 2017Steering. This preliminary information bulletin provides information for diagnosing a power steering fluid leak at the fluid reservoir.
• 10138060Mar 15, 2017Equipment. This warranty administration bulletin provides policy information with the field action courtesy transportation policy.
• 10138025Mar 13, 2017Steering. This technical bulletin provides a procedure inspecting for excess grease or Sealant on the Exterior of the steering gear due to seeing grease or sealant on certain locations on the gear.
• 10138054Mar 10, 2017Electrical system. This informational bulletin provides information on On rare occasions, a security code input message with SPS error code E5659, M5304, and/or M5530 may be displayed in TIS2web when the technician is programming any module. If this concern is encountered, the technician should start by ensuring that the module being programmed is not a used module and that the VIN matches on VIN plate, TIS2web programming screen…
• 10138053Mar 9, 2017Transmission and drivetrain. This warranty administration bulletin provide policy information for automatic transmission Oil Cooler Flush and flow test.
• 10138014Mar 7, 2017Equipment. This information bulletin explains the labor operation numbers used for submitting warranty claims and how to setup, and reprogram modules.

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