2020 GMC Sierra 1500 Technical Service Bulletins

1,539 technical service bulletins (TSBs) are on record for the 2020 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.

• 10172668Feb 21, 2020Brakes, Electrical system. Customer Satisfaction Program - The brake system control module software in these vehicles may contain an error. If (i) the vehicle is started remotely using the MyChevrolet, MyGMC, or MyCadillac mobile app or (ii) the driver enters the vehicle and waits five or more minutes before starting the vehicle using the ignition, this software error can, in rare cases, disable the vehicle?s electronic brake assist and…
• 10172329Feb 21, 2020Fuel system. This Preliminary information communicates the part restriction for the diesel engine air delivery and exhaust system components
• 10172812Feb 20, 2020Engine cooling. This technical bulletin provides a procedure to program the ECM and/or replace the exhaust particulate sensor to correct the DTC that set after the service update has been previously performed.
• 10173420Feb 17, 2020Suspension, Equipment. This engineering information (EI) is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to a vibration and/or banging noise heard from under the vehicle.
• 10173388Feb 17, 2020Body and structure. This technical bulletin provides repair information to correct a customer concern of water found in rear interior of cab due to water leak at rear sliding window.
• 10173418Feb 14, 2020Equipment. This Warranty Administration bulletin provides information on Essential Tools that include Consumable Parts (U.S. Only).
• 10173417Feb 14, 2020Equipment, Wheels. This informational bulletin provides information on Wheel Alignment Specifications, Requirements and Recommendations for GM Vehicles.
• 10173397Feb 14, 2020Equipment, Engine. This technical bulletin provides a service procedure to correct a condition of Ticking Noise from the Engine.
• 10172773Feb 14, 2020Equipment. This warranty administration bulletin provide policy information to cover GMs policy on performing GM covered vehicle services and maintenance on vehicles originating/sold in Canada.
• 10173423Feb 13, 2020Electrical system. This engineering information (EI) is requesting information from the field to perform the check list provided and contact the engineer in regards to Instrument Panel Cluster (IPC) Gages at Zero, Multiple Warning Lights On, No Chimes and/or Turn Single Audio.
• 10172658Feb 13, 2020Engine, Electrical system. Service Update - Certain vehicles may have a condition where the check engine or the reduced power mode light may come on during start-up or while driving. Reprogram the engine control module and the reductant control module.
• 10173424Feb 11, 2020Engine. This engineering information (EI) bulletin is requesting information from the field on vehicles experiencing reduced engine power. GM Engineering needs to gather information to root cause the customer concern and develop a field fix.
• 10172784Feb 7, 2020Equipment, Engine. This Bulletin provides graphics, information and guidelines for engine component wear to assist service personnel as a guideline to perform necessary engine repairs and prevent unnecessary engine replacement.
• 10172312Feb 6, 2020Lane departure, Electrical system. This Preliminary Information communication provides information to the technician about vehicles that have Lane Keep Assist inoperative with the lane keep assist switch LED is always on and the lane keep assist Icon is not illuminated on the IPC after a programming event. Technician will need to ensure that the Front View Camera Module has been properly SPS programmed and SPS configured.
• 10172308Feb 5, 2020Fuel system, Electrical system. This Preliminary information communicates an issues with a SES MIL and DTC P1005 and to replace the fuel pump driver control module with an updated part number.
• 10172304Feb 4, 2020Equipment. This Preliminary Information communication advises the technician that the Radio or Tuner, radio controls, Integrated Center Stack, HUD's, IPC's, and radio displays are placed on restriction through the General Motors Technical Assistance Center. Dealers will need to contact General Motors Technical Assistance Center for further assistance.
• 10172303Feb 4, 2020Equipment, Transmission and drivetrain. This Preliminary information communicates to the dealer technician that the 10L60, 10L80 and the 10L90 transmissions have been place on a part restriction. Dealers are to contact the Product Quality Center before replacing the transmission assembly.
• 10172883Jan 31, 2020Electrical system, Visibility (wipers, defrost, mirrors). This SKU is a Power Window Regulator and Motor Assembly. The customer communication requested return of unsold inventory to inspect the software. The software may be too sensitive to the position of a locating magnet in the assembly causing the activation of the pinch point threshold prematurely. The window will stay open when it should have closed.
• 10171316Jan 31, 2020Electrical system. This Preliminary information communicates to the technician to reprogram the engine control module and, if necessary, diagnose and repair P24B0.
• 10172294Jan 29, 2020Equipment. This informational bulletin provides information on GM Accessories ? Dealer-Installed, Repaired or Replaced During Warranty Coverage Period.
• 10172289Jan 29, 2020Steering. This technical bulletin provides repair information to correct a customer concern of Intermittent "Service Steering Column Lock" message displayed with U0155 Set.
• 10172297Jan 28, 2020Engine, Electrical system. This engineering informational bulletin is requesting information for checking for DTCs and the voltage (relative to a ground) on BOTH sides of the 400A starter fuse in the Battery Distribution Engine Compartment Fuse Block.
• 10171896Jan 28, 2020Engine. This diagnostic tip provides a procedure to aid in performing a diagnostic test to verify if the camshaft alignment pin has been sheared away to correct a crank/No Start condition.
• 10172300Jan 27, 2020Engine, Electrical system. This engineering informational bulletin is requesting information from the field on no crank / no start issue resulting in a starter replacement due to the solenoid overheating.
• 10172293Jan 27, 2020Equipment, Wheels. This informational bulletin provides retail, wholesale and fleet personnel with General Motors recommendations for customer concerns related to wheel alignment.
• 10171305Jan 24, 2020Body and structure, Transmission and drivetrain. This Preliminary information communicates A vehicle may have a concern of a vibration or drone around 40 MPH and 1200 RPM under a light load. Debris in the tranmission mount. Inspect the transmission mount for debris. If debris is found, clean the mount, reinstall and evaluate for the concern.
• 10171875Jan 23, 2020Engine cooling. This informational bulletin provides information to dealership personnel for new vehicles with less than 1,000 miles that may not pass California smog inspection or smog inspection in other states.
• 10171887Jan 22, 2020Latches, locks and linkages, Body and structure. This informational bulletin provides information for dealers/technicians on the process to disable and enable passive unlocking.
• 10172285Jan 21, 2020Equipment. This Warranty Administration bulletin provides information on customer vehicles concern results in a manufacturer repurchase from the customer, GM depends on the dealership to host and administer the repurchase closing and intake of the returning vehicle.
• 10172298Jan 17, 2020Transmission and drivetrain, Equipment. This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to 8 speed transmission shift quality.
• 10171888Jan 17, 2020Equipment. This Warranty Administration bulletin provides information for dealers/Service advisors on when and how to submit a Pre-Repair Authorization (PRA) (US dealers only).
• 10171294Jan 17, 2020Transmission and drivetrain, Electrical system. This Preliminary information communicates to the dealer technician that the part numbers for the internal wiring harnesses for the 8 speed RWD transmissions are not listed in the Electronic Parts Catalog. Technicians are to refer to the information provided in this document to obtain the internal wiring harness part numbers by application.
• 10171293Jan 17, 2020Wheels. This Preliminary information communicates to the dealer technician that some customers may comment the rear wheels locked up at low speeds after a hot soak. Technicians may find DTC's P2724, P2727 or P2729 set. Technician's are advised to replace the TCM to address this concern.
• 10171289Jan 17, 2020Engine cooling. This Preliminary information communicates the possibility of DTC P3075 being set current or history due to low coolant level or air trapped in cooling system.
• 10171288Jan 17, 2020Electrical system. This Preliminary information communicates to the dealer that a customer may comment that the MIL light is illuminated. The technician may find P1098 and/or P26BB set current or history. That this may be caused by a software anomaly, and that GM is currently looking into the issue. It provides testing and related direction based on the results.
• 10171279Jan 14, 2020Transmission and drivetrain. This Preliminary information communicates to the dealer technician that the part numbers for the internal wiring harnesses for the 8 speed RWD transmissions are not listed in the Electronic Parts Catalog. Technicians are to refer to the information provided in this document to obtain the internal wiring harness part numbers by application.
• 10172292Jan 13, 2020Electrical system, Equipment. This bulletin provides information regarding Part Restriction and Ordering Process Information for OnStar® Vehicle Communication Interface Modules (VCIM) (GMNA Only).
• 10171266Jan 10, 2020Engine cooling. This preliminary information communicates the part restriction for the diesel turbocharger and EGR components. Updated to provide instruction on gathering additional data.
• 10171889Jan 8, 2020Body and structure, Visibility (wipers, defrost, mirrors). This technical bulletin provides repair information to correct a customer concern of water found in rear interior of cab due to water leak at rear sliding window.
• 10171258Jan 7, 2020Electrical system, Engine cooling. This Preliminary information communicates to the technician to reprogram the engine control module and, if necessary, diagnose and repair P24B0.
• 10171893Jan 6, 2020Electrical system. This technical bulletin provides repair information to correct a customer concern of Intermittent or Continuous Horn Blowing, Horn Activation Sensitive to the Touch.
• 10171256Jan 6, 2020Electrical system, Brakes. This Preliminary information communicates repair information on Service Brake System, Reduced Engine Power, and Speed Limited messages on the DIC. Along with these messages, a SES MIL will be on and the brake pedal may feel hard. When checking for DTC's the Brake System Control Module (BSCM) with have set a P0606 and C0021. Dealers are to reprogram the BSCM with updated calibrations to correct the concern.
• 10171878Jan 2, 2020Fuel system, Equipment. This informational bulletin advises of a new fuel injection cleaner kit used for decarbonizing the intake valves to correct conditions of rough idle, Crank no start, extended crank or misfire, MIL with DTCs, and explains how Top Tier fuels should be used to reduce carbon build-up.
• 10170476Dec 17, 2019Equipment. This Preliminary information communicates to the dealer technician to instruct the customer to use the block heater only at temperatures 0F and below. A calibration will become available at a later date.
• 10170498Dec 12, 2019Equipment. This preliminary information bulletin provides information om Service Programming System (SPS) Error Codes (E4398, E4399, E4403, M4404, M4413, M6954, M6955, E4414, E4423, E4491 or E6961).
• 10170432Dec 12, 2019Engine, Electrical system. This Preliminary information communicates to the technician to reprogram the engine control module and, if necessary, diagnose and repair P24B0.
• 10170705Dec 10, 2019Body and structure. This technical bulletin provides repair information to correct a customer concern of water found in rear interior of cab due to water leak at rear sliding window.
• 10170491Dec 10, 2019Equipment. This Technical bulletin provides a service procedure for dealers/technicians on installation of Radio Software Version U148 Over-the-Air Update.
• 10170425Dec 9, 2019Fuel system. This Preliminary information communicates information that the EVAP purge pump may be filling with liquid fuel if the customer overfills the fuel tank by over 3 clicks of a normal filler nozzle.
• 10170422Dec 5, 2019Equipment. This Preliminary information communicates to the dealer technician to instruct the customer to use the block heater only at temperatures 0F and below. A calibration will become available at a later date.

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