2021 GMC Sierra 1500 Technical Service Bulletins

1,454 technical service bulletins (TSBs) are on record for the 2021 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.

• 10193446Apr 9, 2021Back-over prevention (rear camera). This Preliminary information communicates A Vehicle may have a concern of service engine light, misfire and engine noise with possible of DTC P0300 P0106 P0506,P3189, P318A, P318B, P318C, P318D, P318E, P318F, P3190 Possible broken valve spring.
• 10194084Apr 8, 2021Equipment. This informational bulletin explains the difference in AFM and DFM engines and what is and is not activated during this occurrence.
• 10193439Apr 8, 2021Back-over prevention (rear camera). This Preliminary information communicates A Vehicle may have a concern of service engine light, misfire and engine noise with possible of DTC P0300 P0106 P0506,P3189, P318A, P318B, P318C, P318D, P318E, P318F, P3190 Possible broken valve spring.
• 10194082Apr 7, 2021Equipment. This warranty administration bulletin provides policy information, proper labor operation selection and causal part identification for warranty transactions (U.S. Only).
• 10193436Apr 7, 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.
• 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).
• 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.
• 10193429Apr 1, 2021Transmission and drivetrain, Body and structure. This Preliminary information communicates to the dealer technician to replace the transmission valve body on 2019-2021 10 speed transmissions to correct DTCs P2812 and P2814 setting if Service Information does not lead to root case of these DTCs.
• 10193428Apr 1, 2021Equipment. This Preliminary information communicates an issue with a low or dead battery issue caused by incorrect ECM calibrations.
• 10193426Apr 1, 2021Air bags. This Preliminary information communicates to dealers there is a known condition with being able to set the Teen Driver PIN and that General Motors Engineering team is working on a correction.
• 10192044Mar 31, 2021Electrical system, Engine. This technical bulletin provides a procedure to locate a possible short in the engine wiring harness.
• 10191255Mar 31, 2021Back-over prevention (rear camera). This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed in regards one or more camera views showing intermittent behavior and/or totally inoperable.
• 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.
• 10190444Mar 31, 2021Suspension, Body and structure. This Preliminary information communicates Some customers may comment about a rough idle and/or vibration at idle. This condition may be most noticeable when the engine is completely warmed up and accessories are off, you may also feel this while idling at a stop in Drive. May feel like a misfire, stumble, lopey or lumpy idle or may be described as a low idle.
• 10190443Mar 31, 2021Back-over prevention (rear camera), Equipment. This Preliminary information communicates a condition where the radio may display a :connection not availale, please call OnStar agent". This bulletin advises that Engineering is working on a software solution that will prevent the message from displaying when listening to non-SXM sources, but still allow the message to display when a loss of connectivity exists and the user is attempting to play Sirius XM.
• 10190442Mar 31, 2021Equipment, Back-over prevention (rear camera). This Preliminary information communicates a condition where the the customer may see a SD card remove message accompanied by a 0X40000 code on the DIC or radio display. This PI offers some testing tips and advises on direction depending on the tests and procedures outlined in the PI
• 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.
• 10191226Mar 30, 2021Equipment. This service bulletin provides repair information for Radio Software Version V155 Update.
• 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.
• 10190435Mar 30, 2021Body and structure. This Preliminary information communicates to technicians to replace the rear cover with seal in the event of a rear oil seal leak.
• 10190433Mar 30, 2021Engine cooling. This Preliminary Information communication provides information to the technician about vehicles that have run hot and or has a tick noise. Technician should inspect the head gaskets to ensure are not installed backwards. Technician should replace the head gasket if they are found installed backwards.
• 10191214Mar 29, 2021Visibility (wipers, defrost, mirrors). This technical bulletin provides repair information to correct a customer concern of DTC P0101 Mass Air Flow (MAF) Sensor Performance, P1682 Set after MAF Replacement.
• 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.
• 10192042Mar 26, 2021Electrical system. This informational bulletin advises the technician of the changes in the DFM and DFM system for the pickups.
• 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.
• 10190429Mar 26, 2021Equipment. This Preliminary information communicates Information on AFM/DFM usage for 2021 MY pickups
• 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.
• 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.
• 10190422Mar 23, 2021Equipment. This Preliminary information communicates to technicians a possible cause and correction for a P026A
• 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.
• 10192031Mar 22, 2021Electrical system. This service bulletin provides information for dealers on Using EL-52545 When Diagnosing PEPs Transmitter Key Fobs (North America ONLY).
• 10190418Mar 22, 2021Back-over prevention (rear camera), Brakes. This Preliminary information communicates Some customers may comment that the SES lamp is illuminated or was Illuminated and turned off. During inspection Technician may notice DTC, P0106 (Manifold Absolute Pressure Sensor Performance), P0108 (Manifold Absolute Pressure Sensor Circuit High) and/or P00C7 (Intake Air Pressure Measurement System Sensor and Multiple Sensors Correlation) codes active or stored in history.
• 10190416Mar 22, 2021Transmission and drivetrain, Fuel system. This Preliminary information communicates to the dealer technician that if a customer comments that their vehicle equipped with a 6L80, 6L90, 8L90, 10L80, or 10L1000 transmission has a harsh shift, shudder or stall concern they should inspect for a twisted transmission cooler line. Technicians are instructed to disconnect the cooler line and untwist it then reconnect the cooler line and inspect the cooler line for…
• 10190415Mar 22, 2021Transmission and drivetrain. This Preliminary Information provides information to the technician about a additional diagnostic tip for a check engine lamp for DTC P3055 and P3056 and the start/Stop being inoperative.
• 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.
• 10192034Mar 17, 2021Electrical system. This warranty administration bulletin provides policy information requirements applicable to key fob replacement under the New Vehicle Limited Warranty or under a Replacement Parts Warranty on 2021 and newer model year vehicles with RPO ATH (U.S. Only).
• 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.
• 10190408Mar 17, 2021Brakes, Back-over prevention (rear camera). This Preliminary information communicates Some customers may comment that the SES lamp is illuminated or was Illuminated and turned off. During inspection Technician may notice DTC, P0106 (Manifold Absolute Pressure Sensor Performance), P0108 (Manifold Absolute Pressure Sensor Circuit High) and/or P00C7 (Intake Air Pressure Measurement System Sensor and Multiple Sensors Correlation) codes active or stored in history.
• 10190772Mar 16, 2021Brakes. Customer Satisfaction Program. On certain vehicles may experience brake function issues over time based on feedback received from the supplier concerning the condition of certain eBoost brake unit assemblies. Dealers are to replace the eBoost brake unit assembly.
• 10190407Mar 16, 2021Back-over prevention (rear camera). This Preliminary information communicates A list of software concerns and advises that engineering is working on a resolution. This PI will be changed to a bulletin once the Software is released.
• 10190406Mar 16, 2021Equipment. This Preliminary information communicates Some customers may comment that the SES lamp is illuminated or was Illuminated and turned off, with no driveabilty concerns. During inspection Technician may notice DTC P2635. Unknown at this time engineering is working on this concern
• 10191232Mar 11, 2021Equipment. This informational bulletin provides information on proper use of floor mats.
• 10191207Mar 11, 2021Engine cooling, Transmission and drivetrain. This bulletin provides information on Policies Applicable to All U.S. Dealers for Engine and Transmission Assembly Replacement Under Warranty, Policy or Customer Enthusiasm and information on Submission of Warranty Transaction in Global Warranty Management.
• 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).
• 10190397Mar 10, 2021Air bags. This Preliminary information communicates to dealers there is a known condition with being able to set the Teen Driver PIN and that General Motors Engineering team is working on a correction
• 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.

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