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Service engine light

708 Views 1 Reply 2 Participants Last post by  07Burb
I have a 1990 gmc 1500 with 350 engine have had the truck about 8years it runs fine no problems the service engine light has been on the whole time can anyone tell me how to reset the light?
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Closing this as it's the same thread as the one you started earlier and I'm linking below..

http://www.gmfullsize.com/forum/showthread.php?t=297091
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