Only the Tach is Not working. ???
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Intermediate
Joined: Oct 2003
Posts: 46
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From: Cinnaminson NJ
Only the Tach is Not working. ???
I have an 2003 C5 Coupe. I have full lights in all of the gauges and heads up display but recently the Tach will cycle on when the car is started (goes all the way up and then goes to 0). All other gauges are working perfectly. I check grounds and all plug assemblies under the hood no corrosion. Once and awhile the tach will seem to get a signal and move for a second or so then it just goes back to no reading. The heads up display is also reading 0. Any ideas?
Safety Car
Joined: Mar 2005
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From: Wisconsin
