Question about 1997 GMC Sierra
When fired the speedomitor rises uo to 20 per hour.the tack and speed gage go up the same like they are hooked together
Check ground wire to back of engine from body to back of passenger side head. also mack sure the one from frame to body is good this is a braided strap and they corrod and get weak and crack or break.
Posted on Nov 30, 2014
I would check the ground wire on the engine.
Posted on Nov 26, 2014
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Posted on Jan 02, 2017
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