2020 GMC SIERRA 1500 Manufacturer communications & TSBs.Page 2
Original record summaries, dates and identifiers for this model-year. Records 101–200 of 1,536, ordered newest first. Dated records on this page: Oct 17, 2024–Mar 25, 2025.
Read the applicability before drawing a conclusion.
This archive includes service bulletins, warranty notices, software instructions and other communications. Records may repeat or supersede earlier instructions. A model-year association is not proof that a document covers every engine, trim, VIN or reported symptom, or that a repair is free.
NHTSA download snapshot: Sep 28, 2026. These are communication associations for this vehicle, not unique defects. How records are joined and counted.
Mar 25, 2025Service Bulletin/Repair Instructions
07-08-42-006T
NHTSA communication ID: 11017243
NHTSA source summary · Original PDF not reviewed by Recallfolio
This service bulletin provides technicians with information on available BCM calibrations to restore bulb outage detection on vehicles produced by a second stage manufacturer (Upfitter), and/or turn signals flash fast after factory box removed.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This service bulletin provides information for dealers/technicians on Service Programming System (SPS) Error Codes E4398, E4399, E4401, E4403, M4404, M4413, M6954, M6955, E4414, E4423, E4491, E4492, or E6961 and resolution information.
Source components: ELECTRICAL SYSTEM · UNKNOWN OR OTHER.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This informational bulletin advises the technician of which pan to use if the LCE has been replaced and to install an aluminum pan should be used with a new LCE.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This service bulletin provides a procedure on how to clean and resurface aluminum wheel bead seats for vehicles that have the condition of Tire Slowly Goes Flat, Tire Air Loss, Low Tire Pressure Warning Light Illuminated, Aluminum Wheel Bead Seat Corrosion.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This technical bulletin provides repair information to correct a customer concern of Evaporative DTCs P0442, P0446, P0455 or P0449, Caused by Dust Intrusion into the Evaporative Canister.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This service bulletin provides information to diagnose batteries that have set for a long period of time and/or cold weather climates and testing those batteries.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This service 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).
NHTSA source summary · Original PDF not reviewed by Recallfolio
This engineering information (EI) closure ends the need for gathering further information from technicians in regard to the vehicle having loss of power and/or having the MIL illuminated on DIC.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This bulletin advises the technician to flush the cooling system multiple times if oil has been found in the cooling system and replace the parts that may be contaminated due to oil in system.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This Preliminary information communicates that some customers may comment that after an auto-stop event the engine does not restart and to inspect the engine ground strap. Temporarily on hold while PIE0572 is active. PIE0572 has now ended and reinstating the PI.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This technical bulletin provides repair information to correct a customer concern of a squeak and/or clunking noise coming from the rear of the vehicle.
NHTSA source summary · Original PDF not reviewed by Recallfolio
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.
NHTSA source summary · Original PDF not reviewed by Recallfolio
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.
Source components: BACK OVER PREVENTION: WARNINGS · ELECTRICAL SYSTEM · STRUCTURE:BODY.
NHTSA source summary · Original PDF not reviewed by Recallfolio
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.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This Preliminary information communicates a "Forward Collision System Reduced" message displayed on the DIC when the Forward Automatic Braking has been set to the "Alert" setting. This is normal when the FAB has been set to "Alert".
NHTSA source summary · Original PDF not reviewed by Recallfolio
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.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This Preliminary information communicates an issues with a service keyless entry message caused by aftermarket door handle covers and they should be removed.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This bulletin provides information to the tech on how to diagnosis the EGR system from possible issue that may cause the DTCs to set and cause the customers concern of a MIL Illuminated.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This Preliminary Information communication provides information to the technician about fluid leaking from the brake caliper piston area found during a service of the vehicle. The substance is actually excess assembly grease from the caliper boot and piston installation. This grease can be cleaned off and the rest of the service completed.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This Preliminary information communicates an issue with a wind noise while driving at highway speeds and dealers are to inspect the body harness pass through for being full seated into the cowl.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This Preliminary Information communication provides information to the technician about vehicles that may have a delayed engagement into drive, shudder at a launch, or the transmission is slipping when shifting into 1st, 2nd, 3rd or 4th gears. This may be due to loose stator support to pump cover bolts causing a leak at the stator support to pump cover gasket. Technician will check for the bolts to be loose. If any of the bolts are loose or the gasket is misaligned or leaking, the transmission pump cover must be replaced and the 1234 clutch plates should be inspected for being distressed and repaired as needed.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This technical bulletin provides repair information to correct a customer concern of vertical misalignment between cab and pickup box on driver side of vehicle.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This 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.
Source components: ELECTRICAL SYSTEM · ENGINE · SERVICE BRAKES · VISIBILITY/WIPER · WHEELS.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This warranty administration service bulletin provides information about GM Accessories - Dealer-Installed, Repaired or Replaced During Warranty Coverage Period.
Source components: STRUCTURE:BODY · UNKNOWN OR OTHER.
NHTSA source summary · Original PDF not reviewed by Recallfolio
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.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This service bulletin provides information on the Transport Mode Feature, also known as Logistics mode, which is used to increase the 12V Battery stand time of the vehicle during transit and or long period of stand time at the dealerships.
Source components: ELECTRICAL SYSTEM · UNKNOWN OR OTHER.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This Preliminary information communicates that some customers may comment that after an auto-stop event the engine does not restart and to inspect the engine ground strap. Temporarily on hold while PIE0572 is active. PIE0572 has now ended and reinstating the PI.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This service bulletin provides information to inform dealership personnel about Law Enforcement and Government vehicles that request to disable or enable content.
Source components: ELECTRICAL SYSTEM · UNKNOWN OR OTHER.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This engineering information (EI) is requesting information from technicians to perform the check list provided and contact the engineer listed in regard to the vehicle having loss of power and/or having the MIL illuminated on the Driver Information Center (DIC).
NHTSA source summary · Original PDF not reviewed by Recallfolio
Certain vehicles listed above, may have a condition where the transmission control valve has worn, resulting in a gradual loss of pressure within the valve. The effects can cause harsh shifting, setting a service engine soon message, reduced engine performance or P0747 diagnostic trouble code. This special coverage covers the condition described above for a period of 15 years or 150,000 miles (240,000km), whichever occurs first, from the date the vehicle was originally placed in service, regardless of ownership. For vehicles covered by Vehicle Service Contracts, all eligible claims with repair orders on or after November 26, 2024, are covered by this special coverage and must be submitted using the labor operation codes provided with this bulletin. Claims with repair orders prior to November 26, 2024, must be submitted to the Service Contract provider. Vehicle owners or lessees who paid for repairs referenced in this Special Coverage (“Customers”) are eligible for reimbursement of their reasonable and customary expenses in accordance with the procedures specified below. The conditional right to reimbursement is provided by GM solely in the interest of customer satisfaction and is personal to Customers. Customers may not assign and GM does not consent to any assignment of any Customer’s right to submit reimbursement claims, or to receive reimbursement, or any other rights granted by this Special Coverage to any third party, including but not limited to service contract providers, and this Special Coverage is not intended to and does not confer any third party beneficiary, subrogation or contribution rights, or any other rights to reimbursement, against GM, whether in law, equity or otherwise, on any third parties. Dealers are to install a new control valve body. The repairs will be made at no charge to the customer.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This technical bulletin provides repair information to correct a customer concern of Trailer Tire Pressure Only Reading Up To 100 PSI, New Parts To Increase To 147 PSI.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This informational bulletin advises the technician to check for faults that may be caused by the trailer otherwise found by a possible faulty trailer connector.
Source components: ELECTRICAL SYSTEM · SERVICE BRAKES.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This bulletin advises the technician that if the code sets, verify the sensor then inspect the engine oil pump for a sticking valve that may cause the MIL to illuminate.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This Preliminary information communicates an issues of the left rear leaf spring making a squeaking noise due to diesel fuel contamination that may occur during refueling after the fuel nozzle is removed from the fuel filler pipe. Dealers are to create a foam seal around the fuel filler pipe to prevent fuel from leaking onto the left spring.
NHTSA source summary · Original PDF not reviewed by Recallfolio
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.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This service bulletin advises the technician of possible coolant entering the areas of the engine, either through failed parts or defects in the castings, that may be the cause of the concerns related to the MIL or the engine running rough.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This service bulletin provides information for customers/dealers/technicians on Normal Camera Display Operation - Flashing Diamond - Spot - or UFO like image on Camera Display.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This Preliminary Information communication provides information to the technician about vehicles that are found to have a back-up alarm inoperative during the Pre-Delivery Inspection. On trucks equipped with the Back Up Alarm (RPO 8S3), the alarm will be intentionally left disconnected from the assembly plant. Technician will reroute the harness and plug it in.
Source components: ELECTRICAL SYSTEM · UNKNOWN OR OTHER.
NHTSA source summary · Original PDF not reviewed by Recallfolio
Certain vehicles listed above, may have a condition where the transmission control valve has worn, resulting in a gradual loss of pressure within the valve. The effects can cause harsh shifting, setting a service engine soon message, reduced engine performance or P0747 diagnostic trouble code. Dealers are to install a new control valve body. The repairs will be made at no charge to the customer.This special coverage covers the condition described above for a period of 15 years or 150,000 miles (240,000km), whichever occurs first, from the date the vehicle was originally placed in service, regardless of ownership. For vehicles covered by Vehicle Service Contracts, all eligible claims with repair orders on or after November 26, 2024, are covered by this special coverage and must be submitted using the labor operation codes provided with this bulletin. Claims with repair orders prior to November 26, 2024, must be submitted to the Service Contract provider. Vehicle owners or lessees who paid for repairs referenced in this Special Coverage (“Customers”) are eligible for reimbursement of their reasonable and customary expenses in accordance with the procedures specified below. The conditional right to reimbursement is provided by GM solely in the interest of customer satisfaction and is personal to Customers. Customers may not assign and GM does not consent to any assignment of any Customer’s right to submit reimbursement claims, or to receive reimbursement, or any other rights granted by this Special Coverage to any third party, including but not limited to service contract providers, and this Special Coverage is not intended to and does not confer any third party beneficiary, subrogation or contribution rights, or any other rights to reimbursement, against GM, whether in law, equity or otherwise, on any third parties. Dealers are to install a new control valve body. The repairs will be made at no charge to the customer.
NHTSA source summary · Original PDF not reviewed by Recallfolio
Certain vehicles listed above, may have a condition where the transmission control valve has worn, resulting in a gradual loss of pressure within the valve. The effects can cause harsh shifting, setting a service engine soon message, reduced engine performance or P0747 diagnostic trouble code. This special coverage covers the condition described above for a period of 15 years or 150,000 miles (240,000km), whichever occurs first, from the date the vehicle was originally placed in service, regardless of ownership. For vehicles covered by Vehicle Service Contracts, all eligible claims with repair orders on or after November 26, 2024, are covered by this special coverage and must be submitted using the labor operation codes provided with this bulletin. Claims with repair orders prior to November 26, 2024, must be submitted to the Service Contract provider. Vehicle owners or lessees who paid for repairs referenced in this Special Coverage (“Customers”) are eligible for reimbursement of their reasonable and customary expenses in accordance with the procedures specified below. The conditional right to reimbursement is provided by GM solely in the interest of customer satisfaction and is personal to Customers. Customers may not assign and GM does not consent to any assignment of any Customer’s right to submit reimbursement claims, or to receive reimbursement, or any other rights granted by this Special Coverage to any third party, including but not limited to service contract providers, and this Special Coverage is not intended to and does not confer any third party beneficiary, subrogation or contribution rights, or any other rights to reimbursement, against GM, whether in law, equity or otherwise, on any third parties.
NHTSA source summary · Original PDF not reviewed by Recallfolio
Certain vehicles listed above, may have a condition where the transmission control valve has worn, resulting in a gradual loss of pressure within the valve. The effects can cause harsh shifting, setting a service engine soon message, reduced engine performance or P0747 diagnostic trouble code. This special coverage covers the condition described above for a period of 15 years or 150,000 miles (240,000km), whichever occurs first, from the date the vehicle was originally placed in service, regardless of ownership. For vehicles covered by Vehicle Service Contracts, all eligible claims with repair orders on or after November 26, 2024, are covered by this special coverage and must be submitted using the labor operation codes provided with this bulletin. Claims with repair orders prior to November 26, 2024, must be submitted to the Service Contract provider. Vehicle owners or lessees who paid for repairs referenced in this Special Coverage (“Customers”) are eligible for reimbursement of their reasonable and customary expenses in accordance with the procedures specified below. The conditional right to reimbursement is provided by GM solely in the interest of customer satisfaction and is personal to Customers. Customers may not assign and GM does not consent to any assignment of any Customer’s right to submit reimbursement claims, or to receive reimbursement, or any other rights granted by this Special Coverage to any third party, including but not limited to service contract providers, and this Special Coverage is not intended to and does not confer any third party beneficiary, subrogation or contribution rights, or any other rights to reimbursement, against GM, whether in law, equity or otherwise, on any third parties. Dealers are to install a new control valve body. The repairs will be made at no charge to the customer.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This Preliminary Information communication provides information to the technician about the use of J-35616-64B terminal test probe, replacement terminals, and terminated leads. The J-35616-64B is the latest test probe released for checking tension or probing the .64 series terminals. The test probe terminal has been released in the terminal repair kit (J-38125-620H) located in Lear Tray 7 part number 963716-2. There are 5 terminated leads in a package part number is 13505346, which can be ordered through your normal General Motors Customer Care and Aftersales parts channel.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This service bulletin provides information on the Transport Mode Feature, also known as Logistics mode, which is used to increase the 12V Battery stand time of the vehicle during transit and or long period of stand time at the dealerships.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This Preliminary information communication provides information to the technician on installing Regular Production Option Code UVC Rearview Camera. Technician will need to reference the latest version of General Motors Up-fitter Integration Bulletin 152. The information can be found at http://www.gmupfitter.com/ under the "Technical Bulletin" Tab and then "Show all bulletins."
Source components: BACK OVER PREVENTION: SENSING SYSTEM: CAMERA · UNKNOWN OR OTHER.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This service bulletin provides repair information to correct customer concerns of 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.
Source components: AIR BAGS · POWER TRAIN · WHEELS.
NHTSA source summary · Original PDF not reviewed by Recallfolio
Certain vehicles listed above, may have a condition where the transmission control valve has worn, resulting in a gradual loss of pressure within the valve. The effects can cause harsh shifting, setting a service engine soon message, reduced engine performance or P0747 diagnostic trouble code. This special coverage covers the condition described above for a period of 15 years or 150,000 miles (240,000km), whichever occurs first, from the date the vehicle was originally placed in service, regardless of ownership. For vehicles covered by Vehicle Service Contracts, all eligible claims with repair orders on or after November 26, 2024, are covered by this special coverage and must be submitted using the labor operation codes provided with this bulletin. Claims with repair orders prior to November 26, 2024, must be submitted to the Service Contract provider. Vehicle owners or lessees who paid for repairs referenced in this Special Coverage (“Customers”) are eligible for reimbursement of their reasonable and customary expenses in accordance with the procedures specified below. The conditional right to reimbursement is provided by GM solely in the interest of customer satisfaction and is personal to Customers. Customers may not assign and GM does not consent to any assignment of any Customer’s right to submit reimbursement claims, or to receive reimbursement, or any other rights granted by this Special Coverage to any third party, including but not limited to service contract providers, and this Special Coverage is not intended to and does not confer any third party beneficiary, subrogation or contribution rights, or any other rights to reimbursement, against GM, whether in law, equity or otherwise, on any third parties. Dealers are to install a new control valve body. The repairs will be made at no charge to the customer.
NHTSA source summary · Original PDF not reviewed by Recallfolio
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.
Source components: ELECTRICAL SYSTEM · UNKNOWN OR OTHER.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This Preliminary information communicates and issue with a no crank, Key Learn Pending or Ready For FOB 3 Message, Unable To Exit RVS With Push To Start Button, Symptoms Of A Dead Battery and has dealership inspect to see if the vehicle is falsely entering the manual transmitter programming and if so to replace the drivers power window switch.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This 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.
Source components: ENGINE · SERVICE BRAKES · STRUCTURE:BODY · UNKNOWN OR OTHER · WHEELS.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This informational bulletin advises the technician of which pan to use if the LCE has been replaced and to install an aluminum pan should be used with a new LCE.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This engineering information (EI) closure ends the need for gathering further information from technicians in regard to a Chirp, Squeal, and/or Whine Type Noise Heard from Front of Vehicle During a Cold Start and/or While in Operation.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This Preliminary Information communicates to the dealer the process for downloading or updating operating software for the Tire Pressure Monitor, Active Fuel Injector tester, multi media tester, PICO Scope, GR8 starting/charging tester and Vehicle Data Recorder tools, giving website address and step by step instructions to complete the update.
NHTSA source summary · Original PDF not reviewed by Recallfolio
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.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This Preliminary information communicates the possibility of the Intake Cam Actuator cover plate screws backing out and making unwanted contact with the Cam Carrier.
NHTSA source summary · Original PDF not reviewed by Recallfolio
This Preliminary Information communication provides information to the technician how to repair vehicles that Instrument Panel Cluster, Radio, and Heater-Vent-Air Conditioning display blanks out, Bluetooth phone or Pandora connection dropped, the radio station or volume changes when operating the snow plow. Please advise the customer that engineering is aware of this concern and working on this issue.