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-   Full Size K5 (1969-1991) GMT415 (1992-1994) Tech (https://blazerforum.com/forum/full-size-k5-1969-1991-gmt415-1992-1994-tech-42/)
-   -   service engine light (https://blazerforum.com/forum/full-size-k5-1969-1991-gmt415-1992-1994-tech-42/service-engine-light-41827/)

jcox 03-07-2010 07:51 PM
service engine light
 
I have a 1991 K5 4x4..I can drive for about 20-30 minutes then the service engine soon light comes on and stays lit.. after I turn off truck for a while light will go off then same thing drive 25-30 minutes it comes back on again..i am taking it to auto zone tomorrow but any ideas before then?

jcox 03-08-2010 06:09 PM
went to auto zone they said truck had to be a 96 model or newer to get reading from it..?? anyways..I changed the temperature gauge (it was broke) and the light quit coming on..easy fix..for once

swartlkk 03-08-2010 08:05 PM
A paper clip is all you need to run the codes on an OBD1 vehicle. Check out TroubleCodes.net.


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