› Forums › Car Problems & Maintenance › Chevrolet › Why is my 2021 Chevy Trailblazer check engine light on?
May 12, 2025 at 5:11 pm
#1156
Joseph
You said they cleaned the throttle body.
1. Was it done properly and with the correct product?
2. Was a throttle relearn conducted once the body was cleaned and the code cleared?