Component
POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE:SOFTWARE
Manufacturer
General Motors, LLC
What Happened
Your vehicle has a problem with the software that controls the transmission. Specifically, the transmission control valve may fail.
Risk if Unfixed
If the transmission control valve fails, your rear wheels could lock up, which could increase the risk of a crash.
Free Fix
You'll need to take your vehicle to the dealership, where they'll update the transmission control module software for free. They'll also check the transmission to see if it needs to be repaired under a special program, and if so, they'll fix it for free too.
Show original NHTSA language
Original — What Happened
General Motors, LLC (GM) is recalling certain 2020-2022 Chevrolet Silverado 1500, 2500, 3500, GMC Sierra 1500, 2500, 3500, 2021 Cadillac Escalade, Escalade ESV, Chevrolet Tahoe, Suburban, GMC Yukon, and Yukon XL vehicles equipped with diesel engines. The transmission control valve may fail and cause the rear wheels to lock-up.
Original — Risk if Unfixed
Rear wheel lock-up can increase the risk of a crash.
Original — Remedy
Dealers will install new transmission control module software, free of charge. GM will provide a special coverage program to cover the repair of transmissions that are identified by the remedy software as containing a defective control valve. Owner notification letters were mailed December 12, 2024. Owners may contact GM customer service at 1-888-988-7267, Cadillac customer service at 1-800-458-8006, GMC customer service at GMC 1-800-462-8782 or Chevrolet customer service at 1-800-222-1020. GM's number for this recall is N242454440.
View full recall details →
Repairs are free at any authorized dealer. Find a dealer →