My truck is missing what wrong I just gave it a tune up but I didn't use the parts it called for I used cheap ones ???..... Help

Asked by Donita Jul 19, 2015 at 11:33 AM about the 2002 Chevrolet Trailblazer EXT LT 4WD

Question type: Maintenance & Repair

2002 Chevy trailblazer

157,465

Bob answered 8 years ago

If it ran better before you tuned it up, then something you did messed it up. Backtrack and retrace your steps. Perhaps you left something loose or disconnected.

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Donita answered 8 years ago

I took it to auto zone and it said core pack and spark plugs..it ran fine for a week but know its running even worse..

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