2004 Chevrolet Avalanche Repair Question
Topics covered: Check engine light, Engine, Vibration.
Mileage: 120,000 miles.
Mileage: 120,000 miles.
Asked on December 11, 2012
Chevrolet Avalanche Check engine light Problem
Cause for loss of power. No check engine light. Idles smooth. Loss of power and vibration under acceleration. Plugs and wires are original. I was going to start there.
Answer
Replied on December 11, 2012
have the back pressure checked for cat converter.
Roy