2021 Chevrolet Tahoe (Chevrolet) – transmission fluid valve issue (2024)
Hazard assessment based on recall description.
This AI-generated summary is provided for general informational purposes only and is derived from publicly available recall notices. It supplements but does not replace official agency classifications or safety instructions.
Check Your Product
According to the National Highway Traffic Safety Administration (NHTSA)
Product
2021 CHEVROLET TAHOE
Brand
CHEVROLET
Lot Codes / Batch Numbers
Not specified in NHTSA notice. Check official source for details.
Products Sold
Model Year 2021
General Motors, LLC is recalling certain 2021 CHEVROLET TAHOE vehicles due to power train:automatic transmission:fluid/lubricant:valves/valve body issues. Rear wheel lock-up can increase the risk of a crash..
Summary derived from NHTSA notice
Reason for Recall
As stated by NHTSA
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.
Reported concern (NHTSA)
Rear wheel lock-up can increase the risk of a crash.
Recommended Action
Per NHTSA guidance
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.
Verify this information on the official source
For complete details and official instructions, check the National Highway Traffic Safety Administration (NHTSA) directly.
View official NHTSA recall noticePage updated: Jan 10, 2026