Chevrolet Tahoe, Silverado 2500 +3 more: Power train — valves/valve body

Affects Chevrolet Tahoe, Silverado 2500, Silverado 3500, Silverado 1500, Suburban · 2020–2022 — about 463K vehicles.

The hazard

Rear wheel lock-up can increase the risk of a crash.

What to do

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.

Critical — crash/injury risk now High — injury risk; see remedy Moderate — fix at next service Low — minor / informational