I have looked everywhere and cannot find the OBD plug in on my truck.
Sep 28, 2018 at 12:04 PM
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DANNY L
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Hello, I am Danny.
It is supposed to be located under the ashtray. If it has been broken off look to see if it has been tucked away under the dash. If you have codes stored we will be happy to help diagnose. I have attached the OBD 1 how to test GM codes tutorial. Hope this helps and thanks for using 2CarPros.
Danny-
I tore the dash apart, there is no OBD plug. Are you sure it is supposed to have one if so now what do I do?
Sep 29, 2018 at 10:28 AM
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DANNY L
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5,648 POSTS
Hello again
Yes, It has one. You might want to check under the dash to see if the plug end broke from its mount and was just stuffed under the dash somewhere.I will look for a picture in the meantime.Hope this helps and thanks again for using 2CarPros.
Danny-
Sep 29, 2018 at 6:34 PM
DANNY L
CERTIFIED EXPERT
5,648 POSTS
Hello again.
I have attached a picture of what the OBD1 connector looks like. Hope this helps in your search.
Danny-
Image (Click to enlarge)
Sep 29, 2018 at 9:56 PM
SCOTTDANNY22@
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36 POSTS
I still cannot find it. Here are some photos of what is there:
Images (Click to enlarge)
Sep 30, 2018 at 3:36 PM
DANNY L
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5,648 POSTS
Hello again.
You might want to see if they stuck it up somewhere in the middle of the dash?
Danny-
Sep 30, 2018 at 4:03 PM
SCOTTDANNY22@
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I have taken the dash apart nothing even resembles one except for the pictures I posted. This is a 1983 GMC Tahoe pick up with a 2.8 liter v6 manual transmission two wheel drive.
Sep 30, 2018 at 5:18 PM
SCOTTDANNY22@
MEMBER
36 POSTS
Can it be located anywhere else? I have traced down every wire in the dash took the whole thing apart and there just is not one.
Oct 2, 2018 at 11:28 AM
STRAILER
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Hello,
I have found this image for you. Check out the diagrams (below). Please let us know if you need anything else to get the problem fixed.
Cheers, Ken
Image (Click to enlarge)
Oct 2, 2018 at 7:57 PM
SCOTTDANNY22@
MEMBER
36 POSTS
Mine is a 1983 GMC Tahoe pick up with a 2.8. I had a retired GM mechanic tell me that they did not have them in 1983 but you say they do. Who is correct?
Oct 8, 2018 at 11:33 PM
STRAILER
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53,854 POSTS
I can only go with what the manual tells me. Can you confirm no wires have been cut out and the ALDL removed?