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stacy
stacy 10/13/2012
2005 GMC Jimmy SLS 6Cyl4.3L - Engine
why does my engine light keep coming on?
i checked my oil , transmission fluid, antifreeze and everything else, and my engine light started coming on this morning then when i turn it off for about 20 minutes it is gone , but when i go to drive it again it comes back on with in the first mile or so , what the heck do i need to be checking it is driving me crazy and it only has just over 76000kms on it so it is not that old. please help getting frustrated already
2 Answers
  • CVO
    CVO 10/13/2012
    Check the vehicle for fault codes to see if there are any sensors were involved to the malfunction of the engine. ( Do not ignore this step. )

    1.Local auto parts stores such as Autozone ( not in California) or Advance Auto parts will scan and retrieve any diagnostic trouble codes ( dtc ) stored in the powertrain control module for free of charge..

    2. Amazon.com has the code reader for less than $20.00 dollars.

    3.Re-post the dtc's in here " answer question " for further assistance.

    Note: we need the dtc's to identify the sensor, there are a dozen different sensors to operate the car.

    Visit this site and see all the different sensors.

    http://www.freeautomechanic.com/car-engine-sensors.html

    Navigate to this site and see the code reader

    http://www.amazon.com/.../...imh_gw_p263_d0_i1
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  • rick
    rick 10/14/2012
    Please listen to Mr.CVO ! He is 100% right . Have it scanned and tell us what the codes are before anybody can even try to help . That light is flashing to tell YOU there is something wrong .
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    rick
    stacy 10/14/2012
    Code that comes up when scanned is P0101 and that is the only one so which sensor is it and is it a pain in the butt to do?
    rick
    CVO 10/14/2012
    P0101. Mass Air Flow (MAF) Circuit Range/Performance Problem

    Check for any vacuum leaks downstream of the MAF sensor.
    Check for the wiring harness incorrectly routed close to a motor, relay and solenoid.

    See this link.......... http://www.obd-codes.com/p0101
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