2005 Pontiac Grand Prix gas cap light

2005 PONTIAC GRAND PRIX
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ROBERT AUSTRENG
  • MEMBER
  • 1 POST
Computer problem
2005 Pontiac Grand Prix 6 cyl Front Wheel Drive Automatic

the "check gas cap"waring comes on our display.the cap is on tight.even if the car is cold or warm,the waring light still comes on.
Jul 15, 2009 at 4:47 AM
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MMPRINCE4000
  • ✓Experienced Mechanic
  • 8,548 POSTS
There is either a problem in the EVAP system, or the cap is not sealing properly.

I would start cheap and replace the cap and erase code (some autoparts stores can do this).

If light comes back on, have car scanned and get specific trouble code.
Jul 16, 2009 at 4:10 AM
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