2020 GMC Sierra 2500HD Software recall 24V797000
Safety recall
Symptoms / what can happen
Rear wheel lock-up can increase the risk of a crash.
Cause
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.
The fix, in plain English
Safety recall work is done free by a franchised dealer. Official 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.
Difficulty
Not DIY: recall remedies are performed by a franchised dealer.
Cost
Free to the owner at a dealer while the recall applies. Outside the recall, costs vary; get a written quote.
Typical parts (search links, no affiliate codes)
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