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.

• 10210348Mar 28, 2022Electrical system. This Preliminary Information communication provides information to the technician about a no start or another concern after swapping an Engine Control Module or other modules from one vehicle to another. The Global Architecture electrical system associated with these vehicles does not allow controller swaps between vehicles.
• 10209971Mar 28, 2022Transmission and drivetrain. The technical bulletin provides a procedure to lube the yoke and caps if found the cause of the noise from the propshaft area.
• 10210345Mar 25, 2022Brakes. This Preliminary information communicates information to diagnose DTC C056D or C056E.
• 10209756Mar 25, 2022Electrical system. This service bulletin provides repair information to correct a customer concern of Blue or Black Screen and Service Rear Vision System Message on Radio Display Shifting into Reverse.
• 10209743Mar 25, 2022Wheels, Equipment. This bulletin updates the position of General Motors on refinishing fully color painted aluminum wheels with base paint. GM has established a new process for the way that refinishing under GM Warranty will be handled (U.S. ONLY).
• 10209921Mar 22, 2022Engine cooling. This service bulletin provides service information on new torque specification and installation procedure for ACDelco Spin-On Oil Filters.
• 10209747Mar 22, 2022Equipment. This bulletin provides information for use on a Product Assistance Claim (PAC), which is formerly known as a Product Allegation Resolution (PAR) claim.
• 10209734Mar 22, 2022Equipment, Fuel system. This service bulletin provides information for maintenance cleaning of the fuel injectors and gasoline detergent additive.
• 10209923Mar 21, 2022Engine cooling, Transmission and drivetrain. This informational bulletin provides graphs to help identify possible issues that may cause shaking and shudders and what may be the cause of said issue.
• 10210334Mar 17, 2022Engine cooling, Engine. This Preliminary information communicates the possibility of dtc p06DD due to low or no oil pressure immediately following engine oil and filter change due to oil filter and main oil gallery being drained or empty.
• 10209136Mar 10, 2022Equipment, Body and structure. This informational bulletin provides technicians and dealership personnel with spray-in bed liner general information and repair procedures.
• 10210322Mar 7, 2022Visibility (wipers, defrost, mirrors). This Preliminary information communicates an issue with poor heater performance and advises dealerships to inspect the heater core inlet and outlet hoses for being twisted or kinked.
• 10210321Mar 7, 2022Wheels, Tires. This Preliminary Information communication provides information to the technician about changing the tire and wheel size on vehicles. General Motors will only support a tire calibration for tires that have been sized, tested and designed for the vehicle in question and its applications. Technician should not use the information that is provided by the antilock braking system tire size selection.
• 10210319Mar 7, 2022Equipment. This Preliminary information communicates information on how dealers can contact the supplier for Associated Accessories offered through GM.
• 10210315Mar 3, 2022Exterior lighting, Electrical system. This Preliminary information communicates to the dealers information related to a Malfunction Indicator Lamp (MIL) Illuminated During Cold Ambient Temperatures with DTCs P30C3 and/or P30BF P30C7 P30CB Setting.
• 10209120Mar 3, 2022Transmission and drivetrain. This technical bulletin provides a procedure to seal the exhaust at the UFSCR and Tailpipe flange.
• 10209097Mar 3, 2022Transmission and drivetrain, Brakes, Electrical system. This service bulletin informs the technician to inspect for a possible electrical concern at the ECM X2 electrical connector to correct a customer concern of Malfunction Indicator Lamp (MIL) Illuminated - DTC P0333 Set.
• 10210311Mar 2, 2022Electrical system. This Preliminary information communicates an issue with the battery goes dead and provides diagnostics tips on inspecting the LIN bus.
• 10210310Mar 2, 2022Equipment. This Preliminary information communicates to dealer of a possible concern with a display and the actions needed to correct the concern.
• 10209134Mar 2, 2022Electrical system. This Engineering Information (EI) Closure ends the need for further information from the field regarding No Heat from Driver Side Inboard Dash Duct and/or Weak Heat On Driver Side.
• 10209122Mar 2, 2022Engine cooling. Information bulletin explains a possible coolant leak coming from the cylinder head bolt areas.
• 10215779Feb 28, 2022Other or unknown, Steering. Engineering Information.
• 10214228Feb 21, 2022Equipment. This service bulletin provides repair information to correct a customer concern of Radio System Settings Lost or Returning to Default Values.
• 10208985Feb 14, 2022Air bags, Other or unknown. This Preliminary information communicates to dealership how to test properly trailer light option on the truck and also provide additional information on trailer issues.
• 10208978Feb 9, 2022Transmission and drivetrain. This Preliminary information communicates that engineering is investigating a repair for a chirp noise associated with the front axle assembly.
• 10208973Feb 8, 2022Equipment. This Preliminary information provides information to the technician on installing a roof beacon light. Technician will need to reference the latest version of General Motors Up-fitter Integration Bulletin 157. The information can be found at http://www.gmupfitter.com/ under the "Technical Bulletin" Tab and then "Show all bulletins."
• 10214233Feb 4, 2022Electrical system. This bulletin provides a procedure to program the BCM to correct the customers concern of RKE idle Time-out.
• 10214223Feb 4, 2022Equipment. This service bulletin provides information to inform dealership personnel about Law Enforcement and Government vehicles that request to disable or enable content.
• 10214243Feb 2, 2022Engine cooling. This technical bulletin advises to replace the camshaft cover if found with in the Julian date and the cause of the customers concern.
• 10214232Feb 2, 2022Equipment. This informational bulletin provides information for dealers/technicians on an elevated idle feature.
• 10215770Feb 1, 2022Other or unknown. Information.
• 10214239Feb 1, 2022Transmission and drivetrain. This Informational bulletin advises the technician of a possible oil leak at the front cover and how to diagnose it to verify if it is coming from the seal or not.
• 10214225Feb 1, 2022Engine cooling. This technical bulletin provides repair information to correct a customer concern of Engine Wire Harness Chafing.
• 10208964Feb 1, 2022Transmission and drivetrain. This Preliminary information communicates to technicians to replace the rear cover with seal in the event of a rear oil seal leak.
• 10212636Jan 31, 2022Engine cooling. This informational bulletin advises the tech of a possible loose bolts at the turbo actuator and to replace turbo if the bolts have been found loose.
• 10208070Jan 31, 2022Transmission and drivetrain. This Preliminary information communicates that engineering is investigating a repair for a chirp noise associated with the front axle assembly.
• 10214206Jan 28, 2022Engine cooling, Equipment. This technical bulletin provides a procedure to seal the exhaust at the UFSCR and Tailpipe flange.
• 10213766Jan 28, 2022Equipment. This Warranty Administration bulletin provides information on Global Warranty Management (GWM) Warranty Parts Center (WPC) Parts Return Program Information.
• 10213762Jan 28, 2022Equipment. This service bulletin provides information for dealers/technicians on Use of Dealer Case Management (DCM) and Being Prepared for Contacting U.S. Technical Assistance (TAC).
• 10212633Jan 28, 2022Equipment. This service bulletin provides information for the Global Warranty Management (GWM) Warranty Parts Center (WPC) Part Photo Return Process (U.S. Dealers Only).
• 10212631Jan 28, 2022Engine cooling. This informational bulletin provides graphs to help identify possible issues that may cause shaking and shudders and what may be the cause of said issue.
• 10213768Jan 27, 2022Equipment, Body and structure. This preliminary informational bulletin provides information on Damaged, Disassembled or Improperly Packaged Turbochargers Returned to Warranty Part Center.
• 10213765Jan 27, 2022Fuel system, Other or unknown. 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.
• 10213761Jan 27, 2022Back-over prevention (rear camera). This informational bulletin provides information on Internal Engine Noise or Damage After Oil Filter Replacement.
• 10212603Jan 27, 2022Brakes. This service bulletin provides information for cleaning brake dust off of aluminum or chrome wheels.
• 10208064Jan 27, 2022Engine cooling. This Preliminary information communicates to technicians to replace the ECM and affected sensor if diagnostics leads to replacement of the ECM.
• 10208063Jan 27, 2022Engine 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.
• 10212591Jan 26, 2022Transmission and drivetrain, Air bags. This service bulletin provides service /diagnostic information to aid with a Transmission Harsh 1-2 Shift Upon First Start Up/Shift of the Day Under Light Throttle.
• 10208061Jan 26, 2022Visibility (wipers, defrost, mirrors). This Preliminary information communicates an issue with poor heater performance and advises dealerships to inspect the heater core inlet and outlet hoses for being twisted or kinked.
• 10214216Jan 25, 2022Brakes, Wheels. This service bulletin provides repair information to correct customer concerns of Rear 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.

← All problems reported for the 2020 GMC Sierra 1500