I have a 2003 Chevy 2500HD, along the hiway my check engine
light come on and it reads "reduced engine power" and I can only travel at 10-15 mph, however after I shut off the engine for a while itll run normal but the check engine light stays on.
JA: Does the light stay on, or does it blink?
Customer: it stays on, and after I shut the engine off, then start up again the "check engine" light is off.
JA: What is the model of your '03 GMC?
Customer: 2500 HD 350 engine.
JA: Are you fixing your 2500 yourself? What have you tried so far?
Customer: nothing, Ive had this happen before last year as a matter of fact, but a day or two had it in the shop.
JA: Anything else you want the mechanic to know before I connect you?
Customer: The mec