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stacy 10/13/2012

2005 GMC Jimmy SLS 6 Cyl 4.3L


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 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.


Navigate to this site and see the code reader



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 .


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?


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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