Service & Repair Manual

My car is a 2002 Chevrolet Trailblazer, I have problems with the check engine and reduced engine power that always comes on, particularly when the engine is cold. Please help and thanks.

Answer: The reduced engine power light works like this, in the power-train control module, a fault code will be set everytime the reduced engine power light comes on. So, you can follow the related diagnostic information to help you to find out the cause of your reduced engine power light coming on.