Retrieving codes

1995 BUICK CENTURY
164,000 MILES
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BIOBOY1972
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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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Oct 14, 2013 at 5:10 PM
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STRAILER
  • ✓ASE Certified Mechanic
  • 54,832 POSTS
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Hello,

That is an OBD1 connector which can be jumped to retrieve the codes. Here is a guide

https://www.2carpros.com/articles/buick-cadillac-chevy-gmc-oldsmobile-pontiac-gm-1983-1995-obd1-code-definitions-and-retrieval-method

Here is the wiring diagram for the connector. Check out the diagrams (Below) Please run this test and get back to us.

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Jan 6, 2018 at 7:38 PM
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