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.

• 10213716Jun 2, 2022Body and structure, Equipment. This engineering informational bulletin is requesting information from technicians to take pictures of decals wrinkling, peeling, bubbling, discoloration, delaminating and/or coming off and contact the engineer listed.
• 10213713Jun 2, 2022Electrical system, Engine cooling, Transmission and drivetrain. This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to Service Engine Soon (SES) Lamp illuminated and/or “Service Emissions System” message on the Driver Information Center (DIC).
• 10213700Jun 1, 2022Equipment, Steering. 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.
• 10213818May 31, 2022Body and structure. This Preliminary Information communication provides information to the technician about vehicles that have an unusual noise and is difficult to identify, isolate or pinpoint. Technician should get record a sound clip or take a video of the noise for assessment by engineering. Technician will need to call General Motors Technical Assistance Center for further assistance.
• 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.
• 10213816May 26, 2022Fuel system. This Preliminary information communicates provides information to the technician on the use of R-99 or R-95 Renewable diesel fuel.
• 10213523May 25, 2022Engine cooling. This technical bulletin provides repair information to correct a customer concern of 2020 - 2022 Silverado and Sierra Equipped with Diesel Engine Setting DTCs P20BB or P20C3.
• 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.
• 10213802May 19, 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.
• 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.
• 10213028May 18, 2022Body and structure. This technical bulletin provides repair information to correct a customer concern of the pickup box being out of alignment.
• 10213798May 17, 2022Exterior lighting. This Preliminary information communicates an issue where GM Accessory Illuminated Emblem may cause an issue with the left headlight/turn signal and dealership are to disable the Accessory Illuminated Emblem until a fix is available.
• 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.
• 10212923May 13, 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.
• 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).
• 10212919May 9, 2022Engine cooling, Electrical system. This technical bulletin provides repair information to correct a customer concern of Engine Wire Harness Chafing.
• 10212912May 9, 2022Body 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.
• 10211684May 6, 2022Transmission and drivetrain. This service bulletin provides information on Transmission Adaptive Functions and Correcting Low Mileage Harsh Shifts, Slips, or Flares.
• 10211658May 2, 2022Engine, Equipment. This service bulletin provides policy information on warranty administration guidelines for multiple repairs with independent causes (GM Canada Dealers Only).
• 10211781Apr 28, 2022Body and structure. This Preliminary information communicates that it is normal for the tailgate to drop faster than it used to after the GM Accessory Kicker Audio System is installed.
• 10211070Apr 28, 2022Transmission and drivetrain. This technical bulletin provides a procedure to clear the codes and test the Tcase if found that the customer has tried to shift the t-case from 4lo to Hi gears while driving.
• 10211071Apr 27, 2022Equipment. This service bulletin provides repair information to correct a customer concern of Radio System Settings Lost or Returning to Default Values.
• 10211775Apr 26, 2022Engine cooling. This Preliminary information communicates that a vehicle may exhibit a misfire condition resulting in misfire codes P0300-P308. Upon diagnosis it may be discovered the lifter has come apart. It is recommended to replace the lifter guide and the four lifters.
• 10211090Apr 26, 2022Engine cooling. This engineering information (EI) is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to Oil Leaking from Front of Engine.
• 10211774Apr 25, 2022Body and structure. This Preliminary information communicates an issue with the tailgate latch handle disengaging from the tailgate. Dealers are to remove the tailgate handle standoff brackets.
• 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.
• 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.
• 10210218Apr 11, 2022Fuel system, Engine cooling, Engine. Special Coverage - certain vehicles may have a condition that could cause the evaporative emissions purge pump to fail. If this condition occurs, the Malfunction Indicator Light (Check Engine Light) will illuminate and a diagnostic trouble code will set. Dealers are to replace the evaporative emissions purge pump/canister as necessary. The repairs will be made at no charge to the customer.
• 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.
• 10211754Apr 5, 2022Engine cooling, Engine. This Preliminary information communicates the possibility of a misfire or rough running concern and abnormal engine noise due to excessive wear in exhaust roller follower axle pin.
• 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
• 10209982Mar 31, 2022Steering, Suspension. This engineering information (EI) closure ends the need for further information from the field in regards to a Popping Noise Heard On Hard Turns and/or Going Over Speed Bumps, Creaking Noise While Turning Wheel Left and/or Right, Clicking Noise Heard On Slow Sharp Turns.
• 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.
• 10209981Mar 30, 2022Transmission and drivetrain, Engine cooling. This engineering information (EI) closure ends the need for further information from the field in regards to Engine Coolant Reservoir Being Overfilled with Discolored Coolant, Shudder, Shake, Vibration, Harsh Shift, Delayed Shift and/or Slipping Transmission Performance.
• 10209977Mar 30, 2022Equipment. This service bulletin provides information for replacement parts traceability (RPT) process to aid in tracking part replacements.
• 10209955Mar 30, 2022Engine cooling. This service bulletin provides a service procedure to correct a condition of a Ticking Noise from the Engine.

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