2018 GMC Sierra 1500 Technical Service Bulletins

956 technical service bulletins (TSBs) are on record for the 2018 GMC Sierra 1500. 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.

• 10139131Nov 20, 2017Equipment. This technical bulletin provides repair information to correct customer concerns of OnStar, XM, GPS or antenna malfunction ? may set DTC B2462, B2470 or B125C - and/or water leak on headliner at sun visor or overhead console areas, possible battery drain concern.
• 10125128Nov 20, 2017Equipment, Electrical system. This Preliminary Information communication provides information to the technician how to repair vehicles that Instrument Panel Cluster, Radio, and Heater-Vent-Air Conditioning display blanks out, Bluetooth phone or Pandora connection dropped, the radio station or volume changes when operating the snow plow. Please advise the customer that engineering is aware of this concern and working on this issue.
• 10125127Nov 20, 2017Equipment, Electrical system. This Preliminary Information communication provides information to the technician about vehicles that in the radio settings some of the vehicle personalization selections within the Comfort and Convenience menu are missing at times. Technician will need to perform a scan for Diagnostic Trouble Codes. Technician will need to follow published Service Information diagnostics if there are Diagnostic Trouble Codes…
• 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.
• 10139108Nov 17, 2017Visibility (wipers, defrost, mirrors). This informational bulletin provides information for assisting the customer in setting the position for the memory mirror and the reverse tilt
• 10125115Nov 14, 2017Equipment, Electrical system. This Preliminary Information communication provides information to the technician about vehicles that in the radio settings some of the vehicle personalization selections within the Comfort and Convenience menu are missing at times. Technician will need to perform a scan for Diagnostic Trouble Codes. Technician will need to follow published Service Information diagnostics if there are Diagnostic Trouble Codes…
• 10125113Nov 13, 2017Transmission and drivetrain, Engine. This Preliminary Information communication provides information to the technician about vehicles that are equipped with 6L80 Regular Production Option Code (MYC), 6L90 Regular Production Option Code (MYD) or 8L90 Regular Production Option Code (M5U) Automatic Transmission, now have Powertrain Grade Braking. Powertrain grade braking assists when driving on a downhill grade to help maintain desired vehicle speed by…
• 10139105Nov 9, 2017Wheels. This informational bulletin provides information for 22" accessory wheel/tire usages.
• 10139123Nov 8, 2017Transmission and drivetrain. This informational bulletin provides information for the technicians to refer to SI for additional diagnostics to correct anomaly in the ECM and TCM.
• 10139122Nov 7, 2017Other or unknown. This informational bulletin provides explanation of a normal condition of a loose fitting ball receiver in the gooseneck.
• 10125109Nov 7, 2017Equipment. This Preliminary information communicates a normal DIC message after learning keys/fobs which indicates the drivers memory position.
• 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.
• 10125100Nov 7, 2017Steering. This Preliminary information communicates a power steering control module calibration error that does not allow its DTC's to transition to history and they always stay current, which can mislead a technician diagnosis. Dealers are to reprogram the power steering control module with updated calibration which will allow DTC's to transition to history if the issue that caused the DTC(s) are now longer present.
• 10139117Nov 3, 2017Steering. This technical bulletin provides a procedure to reprogram the power steering control module to correct a condition of Loss of Steering Assist due to a software abnormality.
• 10125098Nov 3, 2017Engine, Transmission and drivetrain. This Preliminary Information communication provides information to the technician on the steps need to diagnose and repair vehicles that may have stalling shudder and/or hard shifting into 1st gear or reverse vibration on launch (with excessive crankshaft end play). Technician will test to determine if the crank shaft end play is within specification 0.0015–0.0086 inch.
• 10125097Nov 3, 2017Electrical system. This Preliminary information communicates to the dealer technicians to refer to campaign 17337 for calibration updates for P20EE.
• 10191103Nov 1, 2017Transmission and drivetrain, Equipment. Condition Certain 2018 model year Chevrolet Silverado and GMC Sierra vehicles, equipped with the manual shift transfer case (RPO NQG), may have a condition in which the transfer case shift linkage rod bolt torque is less than specified. Over time this bolt could loosen enough to allow the transfer case shift indicator to be inaccurate; or the bolt could fall off causing the transfer case to remain in its previous…
• 10191076Nov 1, 2017Electrical system, Transmission and drivetrain. Condition Certain 2018 model year Chevrolet Silverado HD and GMC Sierra HD vehicles, equipped with 6.6L diesel engine (RPO L5P) and Allison transmission (RPO MW7), may have a condition in which the automatic transmission has rough upshifts. Correction Reprogram the transmission control module (TCM).
• 10134637Oct 27, 2017Equipment. This engineering information is requesting information from the field on vehicles that have the condition of Speaker Rattle, Speaker Crackle, Poor Sound Quality, Speaker Pop, or Speaker Distortion.
• 10190349Oct 1, 2017Exterior lighting. Engineering Information – BOTH Front Low Beam, High Beam, Day Time Running Lamps (DRL) and Turn Signals Inoperative Condition Some customers may comment that the front right hand AND left hand low beam, high beam, DRL, and turn signals are inoperative but the side markers still work as intended. If the turn signals are used, a turn signal bulb out message will be displayed. Cause GM Engineering is attempting to…
• 10190342Oct 1, 2017Visibility (wipers, defrost, mirrors). Changing to Camper Outside Rearview Mirrors Some customers may request to have camper style mirrors installed on their vehicle. The new electrical architecture for the Silverado and Sierra has made swapping mirrors a more involved procedure than with previous models. The recommendation has been divided into three upgrades, depending on which mirrors the truck was built with (RPO DE2, DL8 or DL3).
• 10190339Oct 1, 2017Equipment, Electrical system. Original Equipment Batteries Part Number and ACDelco Replacement Battery Approved Warranty Part Numbers Correct battery cold cranking amperage (CCA) ratings and type are critical for proper test results when using the EL-50313. Access to the battery specification label, which contains the OEM part number and CCA rating and type, may be difficult without component removal. Refer to the table below for the original…
• 10190338Oct 1, 2017Equipment. Essential Tools that Include Consumable Parts (U.S. Only)
• 10190337Oct 1, 2017Suspension. Information Regarding the Differences Between Fluid Leakage and Seepage This bulletin is intended to help identify the differences between what is considered a fluid leak and what is considered seepage. Improper diagnosis may lead to unnecessary component replacement. Use the following information to determine if the condition is normal acceptable seepage or a defective component
• 10190329Oct 1, 2017Equipment, Back-over prevention (rear camera). Rear View Camera Guidelines Not Present at Times Condition Some customers may report that the Rear View Camera (RVC) guidelines are temporarily not available at times but the RVC will remain on during the concern. Additionally, no related DTCs will be found if this bulletin applies. One example of when this concern may be observed is if a customer quickly starts the car and immediately places the shifter in Reverse…
• 10190321Oct 1, 2017Equipment. Information for Fleet Vehicles – Ignition Key, Fob and Key Rings Configuration Some Customers are bundling multiple keys, fobs, and key tags together on a single crimped loop or a cable. This practice may result in unintended key rotation, and should be discontinued immediately. The information in this bulletin details the proper configurations for the ignition key, fob, key rings and key tags and applying a QR…
• 10190320Oct 1, 2017Equipment, Electrical system. IPC Odometer Programming Method Quick Reference Guide
• 10190318Oct 1, 2017Electrical system. All or Some Options May Be Missing from Driver Information Center (DIC) “Info Pages” Menu Due to Them Not Being Selected Condition Some customers may comment that with the “Info” option selected from the main menu (1), the “Info Pages” are blank (2) when scrolling up and down.
• 10190267Oct 1, 2017Electrical system. Diagnostic Tip for Malfunction Indicator Lamp (MIL) Illuminated - DTC P249D, P249E, U029D, U029E Set Some customers may comment that the MIL is illuminated. The technician may find one or more of the following DTCs set: • U029D • U029E • P249D • P249E Note: The graphic above depicts an example of a torn and missing seal. • Moisture intrusion past a damaged (1) seal located in the connector for the NOx sensor wiring…
• 10159301Sep 29, 2017Equipment. 17357 and 17366 - Service update. General Motors has released four field actions related to a condition in which certain vehicles may have an incorrect torsion bar built into the front seat belt retractors. Vehicles in dealer new inventory were placed on stop delivery earlier this month and the field actions were released as parts become available. This message is being sent to provide a summary of the status of…
• 10157041Sep 28, 2017Electrical 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 use Global Diagnostic System 2 to review the Firmware Over-the-Air version. If the Firmware Over-the-Air version on the scan tool equals 6708 the technician will need to contact General Motors Technical…
• 10159618Sep 27, 2017Fuel system. This informational bulletin provides information on availability for a locking gas cap for trucks are operated in high amount of dirt or dust which can migrate to the filler cap area.
• 10157039Sep 27, 2017Engine cooling. This Preliminary information communicatesA vehicle may have a concern of engine noise and/or a misfire. This may be caused by a broken rocker arm.Abroken rocker arms that could result in the valve dropping to the cylinder, causing a catastrophic failure and the engine requires replacement due to cylinder head and block damage.
• 10159297Sep 22, 2017Seat belts. 17366 Service Update. The driver?s and front passenger?s seat belt retractors in certain vehicles may have been built with different torsion bars than were used in testing the vehicles. Dealers will replace seat belt retractors for driver and front passenger seating locations.
• 10159630Sep 21, 2017Transmission and drivetrain. This engineering informational bulletin is requesting information from the field on vehicles that have the condition of a Torque Converter Shudder.
• 10159585Sep 20, 2017Fuel system, Engine 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.
• 10159613Sep 19, 2017Electrical system. This informational bulletin provides information for programming the low speed LAN module due to the mirrors memory position reverse tilt position is inoperative.
• 10159295Sep 19, 2017Equipment. 17366 Stop Delivery Population Revision. On September 14, 2017, GM ordered a stop delivery of certain vehicles. Some vehicles have been removed from this stop delivery order because they were repaired at the plant, or had been sold prior to the stop delivery and identified as such after systems refreshed. The revised list provides the Vehicle Identification Number (VIN) of all involved vehicles in dealer new…
• 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?
• 10159293Sep 14, 2017Equipment. N172118130 Stop Delivery population revision. On September 1, 2017, GM ordered a stop delivery of certain vehicles in new vehicle inventory. Additional vehicles have been added and some vehicles have been removed from this stop delivery order. The revised list provides the Vehicle Identification Number (VIN) of all involved vehicles in dealer new inventory.
• 10159598Sep 13, 2017Back-over prevention (rear camera). This Technical bulletin provides information on new software to correct the rear camera display being too bright.
• 10159291Sep 12, 2017Equipment. N172118130 Stop Delivery population revision. On September 1, 2017, GM ordered a stop delivery of certain vehicles in new vehicle inventory. Additional vehicles have been added to this stop delivery order. The revised list provides the Vehicle Identification Number (VIN) of all involved vehicles in dealer new inventory. Until further instructions are received, involved vehicles that are in dealers?
• 10159593Sep 6, 2017Equipment. This informational bulletin explains to the technician how to validate software calibrations have been tampered with by means of using aftermarket mods.
• 10159588Sep 6, 2017Engine cooling. This informational bulletin provides information on a Service Emission System Message and/or a Malfunction Indicator Lamp illuminated. This usually occurs after recently filling the DEF tank with the ignition in the on position due to some DEF fill equipment uses pumps that create a high level of temporary aeration of the DEF fluid being dispensed in the tank.
• 10159288Sep 6, 2017Equipment. N172118130 Stop Delivery. On September 1, 2017, GM ordered a stop delivery of certain vehicles in new vehicle inventory. Additional vehicles have been added to this stop delivery order. Until further instructions are received, involved vehicles that are in dealers? possession (new vehicle inventory) must be held and not delivered to customers, dealer-traded, released to auction, used for demonstration purposes or…
• 10156992Sep 6, 2017Engine cooling, Fuel system. This Preliminary Information communication provides information to the technician that some vehicle may have an “ Exhaust Fluid Quality Poor ” on the Driver Information Center or a diesel exhaust fluid warning lamp on or other exhaust fluid quality related concerns. Technician will inspect the diesel exhaust fluid for contamination.
• 10159262Sep 1, 2017Equipment. N172118130 Stop Delivery. Effective immediately, stop the delivery of certain vehicles in new vehicle inventory. We are investigating an issue relating to the accuracy of the New Car Assessment Program (NCAP) ratings on the Monroney label for these vehicles. Until further instructions are received, involved vehicles that are in dealers?
• 10126113Jul 25, 2017Electrical system. This informational bulletin provides information on Information on How to Prevent Inadvertent Vehicle Starting from Key Fob or OnStar Mobile Application and where to locate the information for future use.
• 10126100Jul 17, 2017Wheels. This informational bulletin provides information on mcgard wheel locks and if the key ever fractures that they will replace it via the website provided.
• 10138086Mar 29, 2017Suspension. This informational bulletin provides information on Driveline Clunk Noise and what is acceptable and what is considered normal operations.

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