Where is OBD 1 located?

Tiny
PCBRIAN
  • MEMBER
  • 1989 GMC SIERRA
  • 5.7L
  • V8
  • 4WD
  • MANUAL
  • 117,000 MILES
OBD1 location.
Saturday, November 26th, 2022 AT 4:29 PM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,644 POSTS
Hi,

If you are looking for the data link connector (DLC), it is in the vehicle under the dash on the driver's side of the vehicle. It should be visible.

I attached a pic below showing the location. See if you are able to find it. If you can't let me know. Also, here is a link that explains how to retrieve codes from the OBD1 system for a GM vehicle.

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

Let me know if this helps or if you have other questions.

Take care,

Joe

See pic below.
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Saturday, November 26th, 2022 AT 11:13 PM

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