Question about 2004 GMC Envoy

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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...

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Take it to auto zone they will tell you what code you have for free.

Posted on Nov 28, 2013

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You need to return to where you had your Envoy serviced and find out what stored code they read for the check engine light symptom. Your description sounds to me as though they just replaced a bunch of parts and hoped for a cure. Now that the light is back on, they should be able to retrieve a stored code and start all over again to do the troubleshooting they should have done before.

Posted on Nov 28, 2013

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Take it in and find out why its back on, or take it to Oriellys and have them read your code for free

Posted on Nov 28, 2013

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Posted on Jan 02, 2017

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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.

Posted on Dec 10, 2010

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SOURCE: The "tighten fuel cap" message

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

Posted on Apr 24, 2009

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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.

Posted on Jul 05, 2009

  • 634 Answers

SOURCE: Service engine light keeps coming on

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

Posted on Jul 06, 2009

  • 103 Answers

SOURCE: as accelerating, engine hesitates,back off gas

try a new one or try fuel filter

Posted on Jan 02, 2010

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