I have a 2002 Silverado with the 4.8 mine reads 0 when off and goes up when started, depending on speed and what gear I am in it will go up and down all the time. Never staying still.
I've got the 5.3 and up until yesterday my gauge did like yours, up and down when driving and zero when off. I guess I'll take it in on Monday, find out what the problem is.
08-13-2010, 03:19 PM
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