2021 GMC Sierra 3500 Technical Service Bulletins

841 technical service bulletins (TSBs) are on record for the 2021 GMC Sierra 3500. 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.

• 10213535May 27, 2022Engine cooling, Electrical system. This service bulletin provides information for U.S. dealers ONLY to refer to the Battery Maintenance Report to identify vehicles in dealer inventory that require attention.
• 10213258May 27, 2022Other or unknown. This informational bulletin provides explanation of a normal condition of a loose fitting ball receiver in the gooseneck.
• 10213255May 25, 2022Engine, Equipment. This 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 normal operating conditions.
• 10213517May 24, 2022Engine cooling. THis informational bulletin advises the tech not to replace the exhaust system if they smell plastic or rubber.
• 10213515May 24, 2022Electrical system, Exterior lighting. This informational bulletin provides information on Information on Common Customer Trailer Side Faults.
• 10213252May 19, 2022Equipment. This service bulletin provides information on GM Canada New Vehicle Tire Warranty Program for Original Equipment (OE) Tires and PDI installed Limited Production Option (LPO) Tires.
• 10213229May 19, 2022Transmission and drivetrain. 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.
• 10213034May 19, 2022Engine cooling. This service bulletin provides repair information to correct a customer concern of Possible Crank No Start or Extended Crank with DTC P12A6.
• 10213032May 19, 2022Transmission and drivetrain. This Technical bulletin provides a repair to correct a condition of Shudder/Surging While Driving.
• 10213036May 16, 2022Fuel system, Engine cooling, Brakes, Wheels. This informational 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.
• 10213022May 16, 2022Equipment. This bulletin provides information for use on a Product Assistance Claim (PAC), which is formerly known as a Product Allegation Resolution (PAR) claim.
• 10212908May 12, 2022Engine cooling. This informational bulletin explains the normal noises an engine may make when the ambient temperature outside is cold or the vehicle has sat for a few hours.
• 10212951May 11, 2022Engine cooling, Fuel system. This engineering information (EI) is requesting information from technicians to perform the check list provided and contact the engineer listed in regards Service Emission System and/or DEF Level Low message on driver information center (DIC).
• 10212910May 11, 2022Wheels. This Warranty Administration bulletin is for information on General Motors New Vehicle Tire Warranty Program (U.S. Dealers Only).
• 10211934May 3, 2022Forward collision avoidance, Electrical system. This technical bulletin provides repair information to correct a customer concern of Service Front Camera Message on the Driver Information Center (DIC).
• 10211658May 2, 2022Engine, Equipment. This service bulletin provides policy information on warranty administration guidelines for multiple repairs with independent causes (GM Canada Dealers Only).
• 10211071Apr 27, 2022Equipment. This service bulletin provides repair information to correct a customer concern of Radio System Settings Lost or Returning to Default Values.
• 10211061Apr 27, 2022Engine cooling. This information bulletin explains how to measure for oil consumption and possible reasons for loss of oil.
• 10210852Apr 22, 2022Equipment. This service bulletin provides radio software version 135120 (IOR) update procedures to correct customer concerns of software related issues.
• 10211773Apr 21, 2022Transmission 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.
• 10210849Apr 20, 2022Engine cooling. This technical bulletin provides a procedure to replace the camshaft actuator magnet to correct customer concerns of engine related shudder.
• 10210841Apr 20, 2022Equipment. This service bulletin provides information for replacement parts traceability (RPT) process to aid in tracking part replacements.
• 10211770Apr 19, 2022Visibility (wipers, defrost, mirrors). This Preliminary Information communication advises the technician the steps on diagnosing the concern. Customer's sunroof operation intermittent, bind, noise, auto-reverse, and/or water leaks.
• 10211763Apr 13, 2022Wheels. This Preliminary information communicates to technicians to advise dealership technicians to inspect the camshaft exciter wheel and replace it if necessary.
• 10210543Apr 13, 2022Equipment. This informational bulletin provides information on a guide to help reduce repeat visits for the same customer concern.
• 10210545Apr 11, 2022Electrical system. This informational bulletin provides information on the turn signal stalk not cancelling and/or mis cancelling.
• 10210441Apr 7, 2022Body and structure. This preliminary informational (PI) bulletin provides information to dealership personnel which may be helpful when addressing underbody component corrosion with customers.
• 10210194Apr 5, 2022Other or unknown. This informational bulletin provides information on a guide to help reduce repeat visits for the same customer concern.
• 10210351Mar 31, 2022Electrical system. This Preliminary information communicates and issue with the park assist off message or unwanted/false parking assist alerts and provide diagnostics tip for dealership to inspect the parking assist sensor/bezel mounting in the front and rear bumpers
• 10209980Mar 31, 2022Engine cooling. 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.
• 10209974Mar 31, 2022Electrical system, Body and structure, Equipment. 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.
• 10209977Mar 30, 2022Equipment. This service bulletin provides information for replacement parts traceability (RPT) process to aid in tracking part replacements.
• 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.
• 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).
• 10209905Mar 24, 2022Electrical system, Transmission and drivetrain. This technical bulletin provides repair information to correct a customer concern of Service 4WD Message illuminated on Driver Information Center (DIC), DTCs C118D, C119B and/or C119C set.
• 10210341Mar 23, 2022Engine cooling, Transmission and drivetrain. This Preliminary information communicates to the dealer technician that if the vehicle's engine coolant reservoir has transmission fluid in it or if Glycol it found in the transmission fluid the dealer should replace the Automatic Transmission Fluid Cooling Exchanger. The dealer should refer to bulletin 08-07-30-035 for the recommended components that should be replaced in the transmission and to flush the engine…
• 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.
• 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.
• 10210325Mar 9, 2022Engine, Electrical system, Engine cooling. This Preliminary information communicates to the dealership technician a change made to the wire harness and reductant control module for the Diesel Exhaust Fluid tank connector.
• 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.
• 10209258Mar 7, 2022Equipment, Visibility (wipers, defrost, mirrors), Electrical system. This technical bulletin provides repair information to correct a customer concern of 360 Camera Views go Blank with Tailgate Removed.
• 10210314Mar 2, 2022Transmission and drivetrain. This Preliminary information communicates to the dealer a condition with the throttle body that may illuminate the service engine soon light, cause the engine to run rough and/or display reduced engine power message. Dealers are instructed to replace the throttle body assembly and install a grounding wire from the throttle body to the valve cover to prevent future failures.
• 10210311Mar 2, 2022Electrical system. This Preliminary information communicates an issue with the battery goes dead and provides diagnostics tips on inspecting the LIN bus.
• 10209121Mar 1, 2022Electrical system, Forward collision avoidance, Lane departure. This technical bulletin provides repair information to correct a customer concern of Service Front Camera Message on the Driver Information Center (DIC).
• 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.

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