2018 GMC Sierra Denali Technical Service Bulletins

948 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.

• 10151869Nov 21, 2018Equipment. 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.
• 10212574Nov 14, 2018Fuel system, Engine cooling. Service Update. Certain vehicles may have one or multiple DTCs that are incorrectly illuminating the service engine soon (SES) light. Hardware including fuel injectors and exhaust gas recirculation (EGR) valves may have been used to fix this issue, however, the condition could return after these repairs were made. There is no effect for vehicle performance.
• 10155101Nov 5, 2018Equipment. This bulletin provides information for use on a Product Assistance Claim (PAC), which is formally known as a Product Allegation Resolution (PAR) claim.
• 10147401Oct 23, 2018Equipment. This Preliminary information communicates
• 10147382Oct 16, 2018Engine cooling. 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.
• 10147367Oct 10, 2018Equipment. This Preliminary Information communication provides information to the technician about vehicles that the Heater-Vent-Air Conditioning blows warm air. Before calling General Motors Technical Assistance Center technician will need to have high and low pressures, outside temperature, humidity, and vent temperature.
• 10147348Oct 3, 2018Fuel system. This Preliminary information communicates that when removing the fuel line jumper hose care should be taken to be sure the line is reinstalled correctly to avoid a no/low fuel pressure situation.
• 10144476Aug 28, 2018Equipment. This Preliminary Information communication provides information to the technician that General Motors Technical Assistance Center may ask for Global Diagnostic System 2 Session Log. Technician will need use Global Diagnostic System 2 to send the session logs to General Motors Technical Assistance Center for further assistance on the vehicle in question.
• 10187431Aug 8, 2018Equipment. This technical bulletin provides a procedure to replace the dehydrator to correct the condition of A/C Inoperative and/or Insufficient Cooling due to the seals going bad within the part.
• 10186122Aug 8, 2018Equipment. This technical bulletin provides a procedure to replace the dehydrator to correct the condition of A/C Inoperative and/or Insufficient Cooling due to the seals going bad within the part.
• 10144451Aug 8, 2018Engine. 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.
• 10143773Jul 23, 2018Transmission and drivetrain. This Preliminary Information communication provides information to the technician about vehicles that have a random bump, chuggle, or fishbite sensation when crowding the throttle slightly with the Torque Converter Clutch on while cruising at 35-60 miles per hour. Technician should follow all published Service Information diagnostics if the concern is repaired compare to a like vehicle with the same options.
• 10143758Jul 9, 2018Equipment. This Preliminary Information communication provides information to the technician on how to tell the difference between the integrated center stack, the radio, the human machine interface, and the vehicle communication interface module. There are pictures of all the individual modules for identification purposes.
• 10143752Jul 3, 2018Visibility (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.
• 10143449Jun 20, 2018Equipment. This Preliminary Information communication provides information to the technician about vehicles that the Heater-Vent-Air Conditioning blows warm air. Before calling General Motors Technical Assistance Center technician will need to have high and low pressures, outside temperature, humidity, and vent temperature.
• 10143443Jun 14, 2018Equipment. 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.
• 10143429Jun 11, 2018Engine, Electrical system. This Preliminary Information communication provides the technician with steps on how to program an Engine Control Module when getting a Service Programming System error code E4491 or E4423. In some cases Techline Customer Support Center may need to be contacted to resolve the issue.
• 10141371May 23, 2018Equipment, Electrical system. This Preliminary Information communication provides information to the technician about connectivity concerns when connecting an Apple device via USB cord. Technician should insure the customer is using an original equipment manufacturer Apple USB cable.
• 10137599Apr 27, 2018Equipment. This informational bulletin provides information on Audio Volume Stuck High or Low with No DTCs and that this is a normal characteristic.
• 10137598Apr 26, 2018Electrical system, Equipment. This technical bulletin provides a procedure to replace the HMI module to correct a condition of Radio Control (ICS) Display Does Not Remain Off at Times after it Has Been Turned Off in the Radio Settings Menu due to a software concern.
• 10137595Apr 26, 2018Equipment. This technical bulletin provides a procedure to test the radios receiver if certain XM channels cut out (mutes) depending on location of the vehicle.
• 10137597Apr 25, 2018Fuel system. This Bulletin provides information for rebuilding fuel injectors in the event of an underhood fuel odor and/or extended cranking condition.
• 10137559Apr 25, 2018Equipment. This bulletin provides information on approved warranty part numbers for original equipment batteries.
• 10137556Apr 20, 2018Electrical system. This informational bulletin explains to the dealer how to cover a possible customers mistake when a fuse has been blown.
• 10137589Apr 19, 2018Engine cooling. This informational bulletin provides information for engine oil life monitor operation calculation.
• 10137577Apr 19, 2018Electrical system. This technical bulletin provides a procedure to reprogram the memory set module to correct a condition of Personalization Selections Intermittently Missing from Comfort and Convenience Menu due to a calibration concern.
• 10137570Apr 18, 2018Back-over prevention (rear camera). This Technical bulletin provides information on new software to correct the rear camera display being too bright.
• 10137562Apr 13, 2018Visibility (wipers, defrost, mirrors). This PI bulletin provides information on Rear and Side Tempered Glass Spots (Quench Marks) and they are normal characteristic.
• 10137609Apr 10, 2018Exterior lighting, Brakes. This engineering informational bulletin is requesting information from the field on vehicles that have the condition of Service Stabiltak, ABS, Service Trailer Brake Light, and/or Service Traction Control Indicator Illuminated with DTC C0045 or C0050 Set.
• 10137558Apr 9, 2018Equipment. This informational bulletin provides information on approved warranty part numbers for original equipment batteries
• 10137554Apr 9, 2018Transmission and drivetrain. This bulletin provides information on the harmful effects of water or ethylene glycol in transmission fluid.
• 10137560Apr 6, 2018Body and structure. This preliminary informational bulletin provides information to dealership personnel which may be helpful when addressing underbody component corrosion with customers.
• 10137540Apr 5, 2018Fuel system. This Technical Bulletin provides information to correct a customer concern of a siren or whine noise from the in-tank fuel pump at temperatures below -6C or 20F, accompanied by start and stall, no start, loss of power and MIL illuminated. Technicians may find DTCs P0087, P018B, P228A, P228B or P2635 set in ECM.
• 10137536Apr 5, 2018Engine cooling. This informational bulletin provides information for the technicians on where to look on the Duramax engine for coolant leaks.
• 10137561Apr 4, 2018Body and structure. This preliminary informational bulletin provides frame coating repair information to correct a customer concern of wax coating on frame peeling, metal shows corrosion/rusting (U.S. and Canada Only).
• 10137537Apr 4, 2018Equipment. This informational bulletin provides information for use on a Product Assistance Claim (PAC), which is formally known as a Product Allegation Resolution (PAR) claim.
• 10137557Apr 3, 2018Equipment. This informational bulletin provides information to dealership personnel on policies regarding a Product Assistance Claim (PAC) within the Courtesy Transportation Assistance Program.
• 10139297Mar 29, 2018Transmission and drivetrain, Engine, Engine cooling. 17337 - Product Emission Recall. General Motors has decided to conduct a Voluntary Emission Recall involving certain 2016 model year Chevrolet Colorado, GMC Canyon; 2017 model year Chevrolet Express, GMC Savana; 2017-2018 model year Chevrolet Colorado, Cruze, Silverado HD, GMC Canyon, Sierra HD and 2018 model year Chevrolet Equinox, GMC Terrain vehicles, equipped with a diesel engine.
• 10137383Mar 28, 2018Transmission and drivetrain, Engine. This informational bulletin provides information on OEM and Remanufactured Engine and Automatic Transmission/Transaxle Identification.
• 10137381Mar 26, 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 (in Canada, the 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.
• 10137412Mar 22, 2018Tires, Wheels, Body and structure. This preliminary bulletin provides additional guidance for diagnosing vibrations or disturbances that may occur on full size pickups and how to correct and repair.
• 10137432Mar 21, 2018Engine cooling. This informational bulletin advises the technician of how the Soot information has changed from grams to percentage.
• 10137380Mar 16, 2018Equipment. This informational bulletin provides information to dealership personnel on properly eliminating unwanted odors in vehicles.
• 10139290Mar 9, 2018Steering, Electrical system. 18075 - Service Update. Certain vehicles equipped with an auxiliary battery (RPO K4B) may have the ?buddy clip? to the high-pressure power steering hose and two other clips for the auxiliary negative battery cable not attached consistently during assembly process. Inspect the ?buddy clip? and two auxiliary negative battery cable attachments and secure if required.
• 10137404Mar 9, 2018Engine cooling. 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.
• 10137385Mar 9, 2018Equipment. This informational bulletin was created to inform that any accessories that are installed from the GM factory will be covered under the standard vehicle warranty and dealer installed accessories will be covered for a full year (12 months).
• 10137306Mar 9, 2018Visibility (wipers, defrost, mirrors), Body and structure, Electrical system. This technical bulletin provides a procedure to replace the drivers front door window regulator motor and door wiring harness if water and/or corrosion is found in the connectors.
• 10137301Mar 8, 2018Engine, Equipment. This Bulletin provides graphics, information and guidelines for engine component wear that require repair and not engine replacement.
• 10137396Mar 7, 2018Other or unknown, Electrical system, Brakes. This engineering informational bulletin is requesting information from the field on vehicles that have the condition of Service Stabiltak, ABS, Service Trailer Brake Light, and/or Service Traction Control Indicator Illuminated with DTC C0045 or C0050 Set.
• 10137382Mar 7, 2018Equipment. This informational bulletin provides the dealership with how to prep a vehicle for delivery to the customer to aid in higher CSi scores.

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