Modern automobile electrical systems are extremely sensitive. Have your battery checked. A weak one will do weird things electrically to your car even though it is still strong enough to start your car. The gauges and power steering on my Cobalt would come and go randomly. I replaced the battery and all the problems went away. ... just a thought.
I installed a new head unit
2004 Pontiac Grand Prix GT1
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Maintenance & Repair
I have a 2004 Pontiac Grand Prix that drops to 0 RPM's while I'm driving. It won't let me accelerate but the lights and radio stays on the entire time and the engine light isn't turning on when it ...
2004 Pontiac Grand Prix
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Maintenance & Repair
MY 2004 PONTIAC GRAND PRIX GT KEEPS SHUTTING DOWN ON ME WHILE DRIVING.IF I PUT IT IN PARK AND START IT BACK UP IT USUALLY STARTS.TOOK TO MY MECHANIC HE RAN A SCAN AND NOTHING SHOWED.SO HE PUT IN A ...
2004 Pontiac Grand Prix GT2
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Maintenance & Repair
I have a 2006 Pontiac Grand Prix GT with 85,000 miles, 3.8 TC. For the last two months the car sometimes loses all electrical and the engine shuts off as if you removed the battery. The main ground to...
Pontiac Grand Prix
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Maintenance & Repair
I have a 2004 grand prix gt and my temp gauge goes 1 line past the half way line but goes back down about 40 seconds later. Is this a problem. I took it to a local mechanic and he said it was fine....
2004 Pontiac Grand Prix GT2
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Maintenance & Repair
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