Question about 2004 GMC Envoy

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Is it safe to drive car rpm gauge jumping all around engine not ribbing up

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No. Check to see if there are any loose wires - vacuum, plug, coil, etc. Check the distributor cap to see if it is in good condition. Listen for sounds of a vacuum leak.It could be a number of things that will only cause major problems for you out on the road.

Posted on May 30, 2010

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