warning lights comes on car will not start.When lights goes out car starts every time. Sometime when driving the light will come on but car keeps running but when i shut it off it will no start. If light is on and I hit a bump in the road the lights goes out and the tach works.
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1996 Pontiac Grand Am Question: Every warning light on dash is on.
Answer #1Superbob May 17, 2011, 12:09Master
I'm assuming you're talking about the check engine light.
The check engine light indicates that the computer has detected a malfunction in the engine/emission control system and has diagnostic codes and data stored which would be essential in diagnosing the problem.
A technician with a scanner could access the diagnostic codes and data and then be able to give you a diagnosis.
If it's the other warning lights, there must be an electrical problem, the fact that hitting a bump affects the engine points to a bad electrical connection somewhere.
If you want to find a GM specialist, here's our directory link for you: