How do you program a keyless entry remote for a 1993 GMC Jimmy?

Answer 1

i had to take it to the dealership, for a healthy fee, to have a new remote programmed to the car. there has to be some software to do such, but i do not know of it.

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No need to go to a dealer you can do this yourself, I have done it twice when I lost one of my remotes!

All you need is a paper clip or a piece of wire and then you ground pin A to Pin G on the Data Link Connector (also called the Assembly line Data Link Connector or ADLC). Pin A will be the upper rightmost pin which is ground and you jumper from there to G Pin which would be the lower leftmostpin.

So even if your DLC or ADLC is upside down the procedure is the same. Take a paper clip or wire from the above mentioned spots and the doors should unlock and lock and the rear window should activate, then press any button on your new remote. Now all you have to do is remove the jumper (either paper clip or wire) from pin A and pin G. You are now finished, it takes about 20 seconds max!