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Ask GM Tech (Cam) Your Own Question
GM Tech (Cam)
GM Tech (Cam), Pontiac Technician
Category: Pontiac
Satisfied Customers: 2376
Experience:  GM Grand Master Technician 2007. 14 years experience.
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My check engine light is on and it says check gas cap, I

Customer Question

My check engine light is on and it says check gas cap, I purchased a new gas cap but the light is still on what could this be?
Submitted: 1 year ago.
Category: Pontiac
Expert:  Chad Farhat replied 1 year ago.

Hi, I' m Chad. Welcome to JustAnswer. I' m reviewing your question now, and I will be post back with your reply ASAP

Expert:  Chad Farhat replied 1 year ago.

If you have an advance or an auto zone , they will run a diagnstic scan for you for free and rteive the fault code # *****

and just post back here and i can tell what you need to replace to solve it or repair .

Thank You ***** ( aka -Customer)

ASE Certified Tech

Customer: replied 1 year ago.
I went to auto zone twice they just told me that it was the gas cap causing the check engine light they never gave me a code
Expert:  Chad Farhat replied 1 year ago.

how did they know it was a gas cap , it will show a code ,

a check engine light will come on for one fault or 10 fault and each one has a code so we can identify the issue

sometime the people auto zone dont know how to use the scanner

, try another one they should give you a print out

cause now we have nothing to go on

it can not be bad if no light now , most likely emissions related , like a gas cap or a vacuum hose leaking, if car still driving good