The ALDL for GM OBD1 is different than the typical ALDL yet it is not OBD2. If possible, I would like a PDF of the pin-out diagram for the OBD1 port on my make and model of vehicle. I was also wondering if I could use the paperclip trick on my make and model to check codes. If so, exactly how would I go about doing that? And, how would I read/verify such codes? I have attached two photos: photo (1) is the '95 Buick Century (different OBD1) & photo (2) is a '91 Chevrolet Cavalier (typical OBD1).
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Monday, October 14th, 2013 AT 5:10 PM