2020 GMC Sierra 2500 Technical Service Bulletins

1,392 technical service bulletins (TSBs) are on record for the 2020 GMC Sierra 2500. 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.

• 11015382Feb 20, 2025Body and structure. This informational bulletin provides a procedure on how to remove the paint stain that may present itself under the shipping film.
• 11014579Feb 19, 2025Electrical system, Back-over prevention (rear camera), Body and structure. This technical bulletin provides repair information to correct a customer concern of Diagnostic Tips For Park Assist Off Message / Unwanted Or False Park Assist Alerts / No DTCs.
• 11014577Feb 18, 2025Steering. This service 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.
• 11014450Feb 18, 2025Other or unknown. This Preliminary information communicates a "Forward Collision System Reduced" message displayed on the DIC when the Forward Automatic Braking has been set to the "Alert" setting. This is normal when the FAB has been set to "Alert".
• 11014448Feb 18, 2025Other or unknown. This Preliminary information communicates an issues with a service keyless entry message caused by aftermarket door handle covers and they should be removed.
• 11014358Feb 14, 2025Suspension. This service bulletin provides a repair procedure to correct a customer concern of a Squeak, Grind or Clunking Noise from Rear Leaf Springs.
• 11014563Feb 13, 2025Other or unknown. This warranty administration bulletin provides policy information for GM courtesy transportation and roadside assistance programs.
• 11014021Feb 1, 2025Body and structure. This technical bulletin provides repair information to correct a customer concern of vertical misalignment between cab and pickup box on driver side of vehicle.
• 11014230Jan 31, 2025Wheels, Electrical system, Engine, Visibility (wipers, defrost, mirrors), Brakes. This bulletin advises the dealers to maintain the vehicle stock on hand by doing a full inspection on the vehicles before being sold (prepping) to the customer.
• 11014171Jan 31, 2025Body and structure, Vehicle speed control. This service bulletin provides information on proper use of floor mats.
• 11014238Jan 30, 2025Body and structure, Other or unknown. This warranty administration service bulletin provides information about GM Accessories - Dealer-Installed, Repaired or Replaced During Warranty Coverage Period.
• 11014233Jan 30, 2025Engine. This service bulletin provides service information to technicians on guidelines to replace Oil Cooler, Oil Cooler Lines and Oil Tank if the engine was replaced where large amounts of debris has flowed throughout the oiling system.
• 11014239Jan 29, 2025Electrical system, Other or unknown. This service bulletin provides information on the Transport Mode Feature, also known as Logistics mode, which is used to increase the 12V Battery stand time of the vehicle during transit and or long period of stand time at the dealerships.
• 11013395Jan 29, 2025Other or unknown. This Preliminary information communicates that some customers may comment that after an auto-stop event the engine does not restart and to inspect the engine ground strap. Temporarily on hold while PIE0572 is active. PIE0572 has now ended and reinstating the PI.
• 11014222Jan 28, 2025Electrical system, Other or unknown. This service bulletin provides information to inform dealership personnel about Law Enforcement and Government vehicles that request to disable or enable content.
• 11013150Jan 28, 2025Transmission and drivetrain. Certain vehicles listed above, may have a condition where the transmission control valve has worn, resulting in a gradual loss of pressure within the valve. The effects can cause harsh shifting, setting a service engine soon message, reduced engine performance or P0747 diagnostic trouble code.
• 11014170Jan 27, 2025Exterior lighting. This service bulletin provides information on Exterior Lamp Condensation and Water Leak Information and Replacement Guidelines.
• 11013473Jan 24, 2025Other or unknown. This Preliminary information communicates information on a hydrauilc rush type noise from the power steering gear. This noise is a characteristic of the new Active Hydraulic Assist System RPO NV8 and no repairs should be made. The noise is most noticeable in the cab at idle, in park, with all accessories turned off.
• 11013639Jan 23, 2025Electrical system, Wheels. This technical bulletin provides repair information to correct a customer concern of Trailer Tire Pressure Only Reading Up To 100 PSI, New Parts To Increase To 147 PSI.
• 11013352Jan 23, 2025Body and structure. This informational bulletin provides explanation of a normal condition of a loose fitting trailer hitch receiver in the gooseneck hitch ball.
• 11013242Jan 17, 2025Brakes, Electrical system. This informational bulletin advises the technician to check for faults that may be caused by the trailer otherwise found by a possible faulty trailer connector.
• 11013269Jan 16, 2025Body and structure, Steering, Electrical system, Seats, Engine. This informational bulletin provides a guide on how to diagnose and test for vibrations utilizing the PicoScope.
• 11013255Jan 15, 2025Engine, Electrical system. This technical bulletin provides a procedure to program the Reductant Control Module and Setup and Perform the Reductant Fluid Tank Level Reset.
• 11013235Jan 15, 2025Engine. Informational bulletin explaining how a plow may cause overheating and engine damage when traveling over 45 mph.
• 11013069Jan 9, 2025Transmission and drivetrain, Electrical system, Engine. This bulletin provides information on identifying Non-GM Engine Calibrations for Gasoline Engines using the Tech 2 or GDS 2.
• 11013027Jan 9, 2025Engine. This informational bulletin advises the technician on normal noises produced by the engine and to explain this to the customer.
• 11012938Jan 9, 2025Brakes. This Preliminary Information communication provides information to the technician about customers that may request the factory Integrated Trailer Brake Controller Regular Production Option Code (JL1) be installed on their Full-Size Pickup or SUV when the vehicle was not ordered with the option. Dealer should advise the customer it cannot be added to the vehicle.
• 11012929Jan 7, 2025Electrical system. This warranty administration bulletin provides policy information on the requirements for 12V battery testing and warranty replacements.
• 11012930Jan 4, 2025Other or unknown. This warranty administration bulletin provides policy information for GM courtesy transportation and roadside assistance programs.
• 11012908Dec 21, 2024Other or unknown. This service bulletin provides information for customers/dealers/technicians on Normal Camera Display Operation - Flashing Diamond - Spot - or UFO like image on Camera Display.
• 11012907Dec 18, 2024Engine. This service bulletin explains how to measure for oil consumption and possible reasons for loss of oil.
• 11012027Dec 18, 2024Electrical system, Other or unknown. This Preliminary Information communication provides information to the technician about vehicles that are found to have a back-up alarm inoperative during the Pre-Delivery Inspection. On trucks equipped with the Back Up Alarm (RPO 8S3), the alarm will be intentionally left disconnected from the assembly plant. Technician will reroute the harness and plug it in.
• 11011880Dec 17, 2024Transmission and drivetrain. Certain vehicles listed above, may have a condition where the transmission control valve has worn, resulting in a gradual loss of pressure within the valve. The effects can cause harsh shifting, setting a service engine soon message, reduced engine performance or P0747 diagnostic trouble code. Dealers are to install a new control valve body.
• 11012690Dec 14, 2024Other or unknown. This warranty administration bulletin provide policy information for variable diagnostic time allowances on select labor operations (U.S. Only).
• 11011826Dec 13, 2024Transmission and drivetrain. Certain vehicles listed above, may have a condition where the transmission control valve has worn, resulting in a gradual loss of pressure within the valve. The effects can cause harsh shifting, setting a service engine soon message, reduced engine performance or P0747 diagnostic trouble code.
• 11011780Dec 12, 2024Transmission and drivetrain. Certain vehicles listed above, may have a condition where the transmission control valve has worn, resulting in a gradual loss of pressure within the valve. The effects can cause harsh shifting, setting a service engine soon message, reduced engine performance or P0747 diagnostic trouble code.
• 11012670Dec 10, 2024Engine. This informational bulletin provides information on higher than expected oil consumption.
• 11012189Dec 6, 2024Electrical system. This service bulletin provides information on the Transport Mode Feature, also known as Logistics mode, which is used to increase the 12V Battery stand time of the vehicle during transit and or long period of stand time at the dealerships.
• 11011805Dec 6, 2024Other or unknown, Electrical system. This Preliminary information communicates a GM part number for reflective high temperature heat or insulating tape when repairing wiring harnesses.
• 11011687Dec 4, 2024Other or unknown, Back-over prevention (rear camera). This Preliminary information communication provides information to the technician on installing Regular Production Option Code UVC Rearview Camera. Technician will need to reference the latest version of General Motors Up-fitter Integration Bulletin 152. The information can be found at http://www.gmupfitter.com/ under the "Technical Bulletin" Tab and then "Show all bulletins."
• 11011119Dec 4, 2024Other or unknown. This Preliminary information communicates to dealers GM is working on a solution for outdated Apps
• 11011993Nov 27, 2024Wheels, Air bags, Transmission and drivetrain. This service bulletin provides repair information to correct customer concerns of Wheel Lock Up, ABS Event, Loud Bang and a Flashing “D” on Driver Information Center (DIC) when Lightly or Moderately Accelerating Forcing an 8-7 or 8-6 Downshift.
• 11011989Nov 27, 2024Transmission and drivetrain. This service bulletin provides information on the harmful effects of ethylene glycol in transmission fluid.
• 11010810Nov 27, 2024Transmission and drivetrain. Certain vehicles listed above, may have a condition where the transmission control valve has worn, resulting in a gradual loss of pressure within the valve. The effects can cause harsh shifting, setting a service engine soon message, reduced engine performance or P0747 diagnostic trouble code.
• 11012007Nov 26, 2024Transmission and drivetrain. This bulletin helps aid the tech in possible transmission noise that may be normal or abnormal depending on the concern noted.
• 11011996Nov 25, 2024Electrical system, Other or unknown. This service bulletin provides diagnostic/repair information to correct a customer concern of Cellphone not Charging or USB Receptacle Inoperative.
• 11011991Nov 25, 2024Engine. This informational bulletin advises the technician of how the Soot information has changed from grams to percentage.
• 11011946Nov 22, 2024Visibility (wipers, defrost, mirrors). This informational bulletin provides information on Outside Rear View Mirror Defog or Defrost Times Different for Passenger and Driver Mirrors.
• 11011900Nov 22, 2024Engine. This diagnostic tip bulletin provides additional information on how to diagnose a possible valve, lifter or camshaft issue.
• 11011347Nov 22, 2024Electrical system, Other or unknown. This Preliminary information communicates an issues will low or poor heater performance on the drivers side. Dealers are to inspect the HVAC temperature door linkage and if ok replace the heater core.

← All problems reported for the 2020 GMC Sierra 2500