Just about every day the service engine light and reduced power lite comes on. Several times the transmission locked up in low gear. When you shut the engine down for a few seconds the problem goes away momentarily. We have changed the throttle body and cleared codes. Problem continues.
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2002 Chevrolet Trailblazer Question: Service engine and reduced engine power lite problems
Answer #1Visitor, January 20, 2011, 12:43
If your vehicle has an electronic gas pedal. In other words the throttle body is controled by electric impulse from the gas pedal. Try replacing the gas pedal. I have bought them through parts stores, not dealers. See if your vehicle has this type of throttle control first.
Answer #2billwhite66 October 29, 2012, 12:21Rookie
I'm having the same problem. the "check engine" and "reduced speed" lights come on. the trailblazer 
will only idle no matter how far I push the gas pedal down. I got it to the shop by driving the back roads, left it there. They just called to say I need a new throttle body. Wondering if that is the real problem.