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.

• 10195149Apr 6, 2021Equipment. This service bulletin provides information on Enhancing Field Product Reports with Digital Pictures.
• 10195127Apr 6, 2021Equipment. This service bulletin provides information for dealers/technicians on When and How to Submit a Field Product Report (FPR) (U.S. Dealers Only).
• 10194086Apr 1, 2021Air bags, Back-over prevention (rear camera). This technical bulletin provides repair information to correct a customer concern of hearing a rattle noise from driver or passenger seat belt.
• 10193430Apr 1, 2021Equipment. This Preliminary Information communication provides information to the technician about vehicles that may have slack in one of the tailgate cables. Technician should not replace any parts for this concern. Please communicate to the customer this condition is a normal operating characteristic of their vehicle.
• 10191237Mar 31, 2021Electrical system. This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to the Service Engine Soon Lamp illuminated on Driver Information Center.
• 10191253Mar 30, 2021Exterior lighting. This engineering information (EI) is requesting information from technicians to perform the check list provided and contact the engineer listed in regards on a turn signal not canceling and/or mis-canceling.
• 10191191Mar 30, 2021Equipment. This bulletin provides information for use on a Product Assistance Claim (PAC), which is formerly known as a Product Allegation Resolution (PAR) claim.
• 10191192Mar 29, 2021Equipment. This Warranty Administration bulletin provides information for dealers/Service advisors on when and how to submit a Pre-Repair Authorization (PRA).
• 10190432Mar 29, 2021Other or unknown. 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.
• 10190430Mar 26, 2021Engine cooling, Transmission and drivetrain. This Preliminary information communicates to the technician a service Diagnostic / Repair tip to avoid causing the crankshaft sprocket to disengage from the crankshaft during crankshaft balancer or cam drive system component related service procedures.
• 10192036Mar 25, 2021Electrical system. This technical bulletin provides repair information to correct a customer concern of DTC?s P05AE or P059F Set Current or History.
• 10190427Mar 25, 2021Transmission and drivetrain. This Preliminary information communicates diagnostics to the dealer involving a vehicle shudder concern caused by the camshaft actuator system that can be mistaken for a transmission issue.
• 10190426Mar 25, 2021Electrical system. This Preliminary information communicates and issue with the memory seat module waking up the low speed GM lan bus and causing a battery draw.
• 10190424Mar 24, 2021Steering, Vehicle speed control. 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.
• 10190421Mar 23, 2021Engine cooling. This Preliminary information communicates to dealership technicians to perform a sweep of the coolant flow control valve and test the circuits before replacing the Engine Coolant Flow Control Valve, and to assist engineering in root causing the P2B60.
• 10190419Mar 23, 2021Electrical system. This Preliminary information communicates information to not make any repairs for momentary camera flicker when brake light, turn signal, or hazards are active with radio RPO IOR. GM engineering is working on a resolution for this concern. This PI will be deleted and a bulletin created when a repair is available.
• 10192031Mar 22, 2021Electrical system. This service bulletin provides information for dealers on Using EL-52545 When Diagnosing PEPs Transmitter Key Fobs (North America ONLY).
• 10191213Mar 18, 2021Air bags. This technical bulletin provides a procedure to replace the air bag and air bag harness to correct a condition of Airbag Malfunction Warning and Airbag Malfunction Indicator Illuminated with DTC B0001-1B due to corrosion.
• 10191233Mar 17, 2021Equipment. This Warranty Administration bulletin provides information on Dealer Empowerment for Goodwill, Customer Enthusiasm and Policy (U.S. Only).
• 10191229Mar 17, 2021Engine cooling. This technical bulletin provides a procedure to correct the condition of Information on Vehicles Engine Shuts Off After 30 or 60 Minutes of Idling.
• 10192032Mar 16, 2021Equipment. This informational bulletin directs dealers to the correct path needed to correct a vehicle with the condition of Add-On Equipment Inoperative, Sulfur/Acid Smell During Vehicle Operation based on the correct cause.
• 10191232Mar 11, 2021Equipment. This informational bulletin provides information on proper use of floor mats.
• 10191225Mar 10, 2021Electronic stability control. This technical bulletin provides repair information to correct a customer concern of False Traction Control or Stability Event During Slow Speed Sharp Turns.
• 10191202Mar 10, 2021Engine cooling. This informational bulletin explains why more DEF is being used in diesel engines do to new emission standards.
• 10191197Mar 10, 2021Body 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).
• 10191217Mar 9, 2021Equipment. This informational bulletin advises the dealers to maintain the vehicle stock on hand by doing a full inspection on the vehicles before sold (prepping) to the customer.
• 10191206Mar 9, 2021Electrical system. This warranty administration bulletin provides policy information on the requirements for battery testing and warranty replacements.
• 10190396Mar 9, 2021Engine cooling. This Preliminary information communicates to the technician a service Diagnostic / Repair tip to avoid causing the crankshaft sprocket to disengage from the crankshaft during crankshaft balancer removal.
• 10191212Mar 8, 2021Engine cooling. This informational bulletin provides a test procedure, for a possible faulty DEF Heater.
• 10191163Mar 8, 2021Steering. 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.
• 10191196Mar 5, 2021Steering. This technical bulletin provides repair information to correct a customer concern of steering wheel oscillation, vibration, shake 50-80 mph.
• 10190365Mar 5, 2021Back-over prevention (rear camera), Visibility (wipers, defrost, mirrors). This Preliminary information communicates information on how to disable the Side Blind Zone Detection and Park Assist systems when a customer removes the pickup box from the vehicle to install an aftermarket bed or body.
• 10190362Mar 5, 2021Back-over prevention (rear camera), Transmission and drivetrain, Steering. 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.
• 10191209Mar 4, 2021Fuel system. This technical bulletin provides a procedure to inspect and repair the fuel pressure sensor if found the cause of the customers concern.
• 10191242Mar 3, 2021Electrical system. This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to a Dead Battery and/or Shift to Park Lamp Illuminated On Driver Information Center (DIC).
• 10191239Mar 3, 2021Equipment. This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to USB Port Does Not Charge or Recognize Phone/Device, or Not Holding Cable in Port, USB and/or Auxiliary Port Inoperative or Won?t Play Media From the Device Constantly or Intermittently, Apple CarPlay and/or Android Auto Inoperative When Connecting into…
• 10191231Mar 1, 2021Wheels. This informational bulletin provides information on Wheel Balancer Mounting Instructions.
• 10188403Jan 29, 2021Suspension, Transmission and drivetrain. This service bulletin provides technicians with updated information to help identify the differences between what is considered a fluid leak, and what is considered fluid seepage.
• 10188401Jan 29, 2021Equipment, Body and structure. This service bulletin provides information for dealers/technicians on accessory all-weather floor liners and flat mats warped or misshapen.
• 10187760Jan 29, 2021Electrical system, Exterior lighting. This technical bulletin provides repair information to correct a customer concern of seeing the trailer running lights shut off due to excessive load on the running lamp circuit.
• 10187753Jan 29, 2021Brakes. This technical bulleti provides a procedure to replace the front and rear brake pads if the brakes are squealing.
• 10188410Jan 27, 2021Electrical system, Equipment, Brakes. This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed in regards the trailer brake being inoperative and/or check trailer brakes message on drivers information center (DIC).
• 10188399Jan 27, 2021Body and structure, Equipment. This technical bulletin provides repair information to correct a customer concern of a pop noise heard coming from the rear roof of cab area.
• 10188402Jan 26, 2021Electrical system, Equipment. This service bulletin announces that the Part Restriction and Ordering Process Information for OnStar® Vehicle Communication Interface Modules (VCIM) (GMNA Only) has ended.
• 10187775Jan 22, 2021Equipment, Electrical system. This technical bulletin provides repair information to correct a customer concern of Clean Exhaust Filter, Perform Manual Regen, and Loss of Digital Speedometer DIC Displays.
• 10187745Jan 22, 2021Engine. This service 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.
• 10187769Jan 21, 2021Electrical system, Engine cooling. This bulletin provides a possible location of a bad connection at the reductant fluid tanks electrical connector.
• 10187770Jan 20, 2021Electrical system, Engine cooling. This technical bulletin provides a procedure to program the reductant fluid module if found the cause of the customers concern.
• 10187763Jan 15, 2021Equipment, Engine cooling. This technical bulletin provides repair information to correct a customer concern of Possible Crank No Start or Extended Crank with DTC P12A6.
• 10187767Jan 13, 2021Fuel system, Engine cooling, Equipment. This informational bulletin provides a test procedure, for a possible faulty DEF Heater.

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