2026 GMC Sierra 1500 problems

26V289000

Date: 2026-05-07. Systems: POWER TRAIN.

Defect: General Motors, LLC (GM) is recalling certain 2026 Cadillac Escalade and Escalade ESV, Chevrolet Silverado 1500, Suburban, and Tahoe, and GMC Sierra 1500, Yukon, and Yukon XL vehicles with four-wheel (4WD) or all-wheel drive (AWD), and certain 2015-2020 Suburban, Escalade, Escalade ESV, Yukon, Yukon XL, and Tahoe vehicles. A component missing from the drivetrain transfer case may cause the front a (excerpt)

Consequence: Front or rear wheel lockup increases the risk of a crash. (excerpt)

Remedy: Owners are advised not to drive their vehicle until the remedy is completed. Dealers will inspect and, if necessary, replace the transfer case assembly, free of charge. Owner notification letters were mailed May 18, 2026. Owners may contact GMC customer service at 1-800-462-8782, Chevrolet customer service at 1-800-222-1020 or Cadillac customer service at 1-800-333-4223. GM's number for this reca (excerpt)

Do not drive: Yes. Park outside: No.

26V114000

Date: 2026-02-26. Systems: EQUIPMENT.

Defect: General Motors has decided that certain 2027 Chevrolet Bolt EV, 2025-2026 Cadillac OPTIQ, Chevrolet Colorado, Equinox EV, GMC Canyon, 2026 Buick Enclave, Envision, Cadillac CT5, Escalade, Escalade ESV, Escalade IQ, Escalade IQL, LYRIQ, VISTIQ, Chevrolet Blazer EV, Corvette Convertible, Corvette Coupe, Corvette Convertible E-Ray, Equinox, Silverado 1500, 2500, 3500, Silverado EV, Suburban 1500, Tah (excerpt)

Consequence: Without an owner's manual to consult, owners may not know how to safely use and operate the vehicle, increasing the risk of injury in a crash. (excerpt)

Remedy: Dealers will reset the vehicle radio, which will facilitate automatic download of the electronic ownera s manual, free of charge. Owner notification letters were mailed April 16, 2026. Owners may contact GM customer service at 1-866-467-9700, Chevrolet customer service at 1-800-222-1020 or Cadillac customer service at 1-800-333-4223. The manufacturer's number for this recall is N252540430. Vehicl (excerpt)

Do not drive: No. Park outside: No.

EA26005

Opened: 2026-08-20. Closed: Not listed.

Loss of motive power due to engine failure post recall remedy

On January 16, 2026, the Office of Defects Investigation (ODI) opened Recall Query RQ26001.A This investigation was opened to assess the remedy effectiveness of Recall 25V-274. ODI has received complaints alleging engine failure in vehicles after the recall remedy had been completed, whether that remedy involved an oil viscosity change or a complete engine replacement. General Motors (GM) issued

Systems: ENGINE.

Linked campaign numbers: None listed.

11038139

Date: 2026-10-05. Type: Service Bulletin/Repair Instructions. Systems: UNKNOWN OR OTHER.

This preliminary PI was created to advise techniians in the field that they will not be able to perform a GDS automated bleed with the scan tool dues to a issue with the software in the scan tool

11038132

Date: 2026-09-28. Type: Service Bulletin/Repair Instructions. Systems: UNKNOWN OR OTHER.

This Preliminary information communicates to dealers a procedure to reset the radio.

11038136

Date: 2026-09-28. Type: Service Bulletin/Repair Instructions. Systems: UNKNOWN OR OTHER.

This preliminary information is for technicians that may see DTCs that are history and should not perform any part replacements. They should follow the notes mentioned prior to anything being replaced.

11037555

Date: 2026-09-26. Type: Service Bulletin/Repair Instructions. Systems: UNKNOWN OR OTHER.

This PI provides Diagnostics tips on how the LIN bus works and how to diagnosis it.

11037551

Date: 2026-09-21. Type: Service Bulletin/Repair Instructions. Systems: UNKNOWN OR OTHER.

This preliminary information communicates an issue with a service column lock message and DTC U3000. Engineering is working on the issue and in the meantime dealerships are to reset/clear the DTC and perform four sleep cycles to verify the DTC does not return.

11037445

Date: 2026-09-15. Type: Service Bulletin/Repair Instructions. Systems: UNKNOWN OR OTHER.

This PI is created to inform GM dealers that some vehicles may intermittently fail to connect wireless Apple CarPlay or Android Auto after Bluetooth pairing during the first key cycle. The condition is caused by a software anomaly.

11037320

Date: 2026-09-10. Type: Service Bulletin/Repair Instructions. Systems: UNKNOWN OR OTHER.

This PI is to instruct dealer on diagnostic procedures that need to be completed prior to replacing a radio or IPC display

11037253

Date: 2026-09-04. Type: Service Bulletin/Repair Instructions. Systems: UNKNOWN OR OTHER.

This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.

11037255

Date: 2026-09-03. Type: Service Bulletin/Repair Instructions. Systems: UNKNOWN OR OTHER.

This preliminary information communicates a diagnostic tip for the tailgate release system and tailgate ajar message.

11037258

Date: 2026-09-03. Type: Service Bulletin/Repair Instructions. Systems: UNKNOWN OR OTHER.

This PI is created to inform GM dealers that some vehicles may intermittently fail to connect wireless Apple CarPlay or Android Auto after Bluetooth pairing during the first key cycle. The condition is caused by a software anomaly. Do not replace parts. Engineering is investigating the root cause; c