Engine light we had the truck serviced a week ago for the check engine light they fixed fuel sensor gas pedal sensor and gas peddle.....light went out and was doing fine then after 6 days it comes back on...what is your suggestions...

Johnny Brown

• 5763 Answers
• Posted on Dec 10, 2010

SOURCE: I have a 2005 GMC CANYON and the check engine has

Theres is a way, you can do it with a scan tool or remove a battery connection for 5min, the check engine light can come on for many reasons, when the computer sees a problem with the engine sensors or trany that is out of specs it will turn on the light and store a codes in the computer, this codes will tell you what part of what system is failing, i would have the codes read to see what the problem is, this way you dont do any further damage, many autopart stores will scan the codes for free, i think you should get the code or codes and i will help you further, good luck and i hope this helps.

SOURCE: The "tighten fuel cap" message

It's the gas cap sensor. Or you are getting a vaccuum leak somewhere.

SOURCE: 1994 GMC JImmy 4.3 V6 running very roughly

fuel pump sock or try the egr valve to see if it is stuck open all the time. can't remember if that one has the digital one and a vachumm type as well, next would be the evaperative canister purge valve.

SOURCE: Service engine light keeps coming on

need to scan for codes and find problem code some part stores do for free

SOURCE: as accelerating, engine hesitates,back off gas

try a new one or try fuel filter