to much fuel pressure

10

Asked by Feb 25, 2014 at 07:41 PM about the 2001 Chevrolet Silverado 1500 Base Short Bed

Question type: Maintenance & Repair

when I open my gas cap theres a lot of air or pressure that comes out.

3 Answers

69,275

If your check engine light is not on and you're not having any drivability problems it's normal. My '93 Chevy Caprice did that from day one. I bought it brand new. HTH. -Jim

10

The check engine light is on..

1 of 1 people found this helpful.
69,275

Ah, ok then. Probably the vent valve for the gas tank is malfunctioning. Have the computer scanned and post the code(s). Advance and Autozone auto parts stores will do it for free. Are you also having trouble at the gas pump? Does the pump keep shutting off before the tank is full? That's another indicator that the vent valve is malfunctioning. HTH. -Jim

1 of 1 people found this helpful.

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