Question about 2002 GMC Savana

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I had to replace the intake gasket on my 2002 5.7L GMC 2500 Savana van and failed to make the distributor position. How do I readjust the timing?

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  • atwood2257 Nov 06, 2010

    Apparently my distributor is adjusted automaticly by the computer. It is adjusted close enough to run just fine but once in awhile it misfires at startup and trips service engine light. I've heard it needs to be set by some type of meter but I don't what it is.



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You will have to bring the #1 piston to TDC on it's compression stroke (use timing mark if there is one or probe the plug hole to see when it's all the way up). To do this, you have to either pull the timing cover to check the cam sprocket marks or pull the valve cover to watch the intake valve close ahead of the compression stroke. Then, with the piston at TDC, you get the distributor rotor to align with #1 on the cap when fully seated. OK?

Posted on Nov 06, 2010

  • 2 more comments 
  • Jeffrey Turcotte
    Jeffrey Turcotte Nov 07, 2010

    I don't have a manual for your van. Would you mind entering a new problem for how to set ignition timing on your van? Hopefully one of the other experts can answer that question. Sorry.

  • atwood2257 Nov 07, 2010

    I have a manual, but it doesn't say how to time it. It only says to take it to dealer.

  • Jeffrey Turcotte
    Jeffrey Turcotte Nov 07, 2010

    You may be able to find a better, more complete, manual at the library. You need the one the dealer uses. These are the big thick ones in the 629.x row of the library isles.

  • atwood2257 Nov 07, 2010




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