check gas cap keeps appearing in message center, why?

Asked by Mar 12, 2014 at 10:58 PM about the 2007 Pontiac Grand Prix Base

Question type: Maintenance & Repair

car was low on fuel twice, now that mess. keeps appearing.

1 Answer

4,585

Vapor sensor is indicating that the fuel tank isn't sealed properly. Cap seals do wear out over time. Don't overtighten the cap, when it clicks once it's on as tight as it can get. It may take a while for that message to clear, let the car sit overnight.

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