2004 Chevrolet Avalanche Cause Loss Power Check Engine Light Idles Smooth

2004 CHEVROLET AVALANCHE
120,000 MILES
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LONESTARJAVA
  • MEMBER
  • 1 POST
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.
Dec 11, 2012 at 1:12 AM
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ASEMASTER6371
  • ✓ASE Certified Mechanic
  • 52,796 POSTS
  • ASE Certified Mechanic
have the back pressure checked for cat converter.

Roy
Dec 11, 2012 at 1:26 AM
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