Transmission valve body failure and hard shifting
POWER TRAIN
8 NHTSA complaints · 2024-12 → 2026-07
“10-speed automatic transmission valve body failure at 41k Parts are unavailable nor are replacement transmissions. Dealership says 3 months”
“Vehicle and many like it with the 10 Speed transmission are having failing valve bodys which de-rates the vehicle to stay in 5th gear by GM coding and limits speed to 50 MPH”
“The valve body failed on my transmission. My safety was impacted because as I was towing my 40 foot camper and my vehicle went into limp mode on the freeway at 70 miles an hour and I could only go 45 with four children in the vehicle”