Where is the OBD port on a 1993 Chevrolet 1500?

I read somewhere on the Internet that I can find the trouble codes for my Chevy engine using a scan tool, and that I need to hook it up to my OBD port. I have the scan tool, but I can’t find the OBD port. Did the Internet lie to me or is there an OBD port on a 1993 Chevrolet 1500?

Jason Tushinski · Updated on
Reviewed by Shannon Martin, Licensed Insurance Agent.
You can’t always believe what you read on the Internet! There is no OBD-II port on a 1993
Chevrolet 1500
pickup—in its place you’ll find a diagnostic link connector, which you can still use to read your engine’s trouble codes (no matter what the Internet says)!
GM and Chevrolet vehicles weren’t outfitted with OBD ports until 1996—before then, a diagnostic link connector acted as the pathway for technicians (and adventurous types like yourself) to
scan for trouble codes
. Usually located below the steering wheel, the diagnostic link connector acts in the same way as a modern OBD port does.
That’s right—the ‘93 1500 isn’t as stone-age as you might think. It can provide you with trouble codes just like a modern OBD port. All you need is a paper clip, a pen, and some paper.
Untangle the paperclip and insert an end into each of the two top-right ports on the diagnostic link connector. Turn the ignition to ON. The Check Engine Light’s flash patterns will help you interpret what’s wrong with your engine.
For example, a flashing pattern of one, one-two-three is code for 13. Now, grab your owner’s manual (which we know you still have—right?) and flip to the trouble code section, where you’ll be able to see what that code means.
If you’re a car expert and can use that code to diagnose and fix the problem, have at it! If not, it’s never a bad idea to take your truck to a Chevy dealership and have a technician properly scan for trouble codes, and fix any problem.
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Jerry partners with more than 50 insurance companies, but our content is independently researched, written, and fact-checked by our team of editors and agents. We aren’t paid for reviews or other content.

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