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Pull codes from '95 GMC Jimmy

muskie

TCG Elite Member
May 26, 2011
1,749
317
Palatine
My girlfriends truck got a "Service Engine Soon" light and I'm trying to check the code. I went outside thinking GM OBD1 use a paper clip to jump the pins and read the code. No such luck its an OBD2 connector. Apparently this was a transition period for GM and they used OBD1 computers with OBD2 plugs.

I tried a generic OBD2 reader and wasn't able to pull any information. Has anyone dealt this this before? How can I read the code?
 
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