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Thread: 1999 Chevy Silverado - Sluggish Acceleration?

  1. #21
    Junior Member
    Join Date
    Mar 2014
    did you ever find out what was wrong with the truck i have the same problem

  2. #22
    Do you have a check engine lite?? Get it scanned and if it pops P0171 and 172 That's a vacuum leak. I'd look at ex gaskets. as far as running Cleaner in the engine every 3 mo. that's over kill. you can burn up the fuel inj.


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