Question about 1999 GMC Sonoma

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Replaced head gaskets

Now when i put the truck in drive and press the pedal to the floor it hesitates and the truck slowly and i mean 2mphwhen the gas pedals to the floor

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  • Richard Scordino May 11, 2010

    And what are rpm's doing?

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  • 72 Answers

What size engine does it have? Sounds like a timing problem.

Posted on Jun 19, 2009

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