Chevrolet · Canada · High
Chevrolet Silverado, Silverado HD +2 more: Powertrain
Affects Chevrolet Silverado, Silverado HD, Suburban, Tahoe · 2020–2022 — about 52K vehicles.
The hazard
Issue: Over time, the transmission control valve could wear and lose pressure. If this happens, the transmission could shift harshly and could cause the rear wheels to lock up. Note: This recall only affects vehicles equipped with a diesel engine. Safety Risk: Rear wheels that lock suddenly could cause a loss of control and increase the risk of a crash. Corrective Actions: General Motors will notify owners by mail and advise you to take your vehicle to a dealership to update the transmission control module software to detect excess wear in advance of a wheel lock up. If detected, a service engine light would turn on, a message would display in the instrument panel and the vehicle would be limited to fifth gear.
What to do
Contact your dealer; the remedy details were not included in the filing.