Go to this website http://www.carandtruckremotes.com/ and you can buy an original factory remote at a better price than dealership.
keyless systems don't require you to put the key in the ignition, you can leave it in your pocket and hit the start button
To program a remote keyless entry on 1996 Chevrolet pickup, first hold down the power unlock button of the door panel. Second, turn ignition key ON, OFF, ON, OFF. Then release power unlock button on the door panel.
Pass. side rear, behind shoulder strap of seatbelt
These models (1996 and 1997 I know about) do not have keyless entries when they come of the production line. If one does, it is dealer installed. The box can be found under the instrument panel, somewhere behind the parking brake pedal.
That sounds like your keyless remote sensor.
Try it manually, with the actual key. If it opens that way, then the remote sending unit is defective.
The Dealer. With remote about $150, without remote $20, new battery for remote $10 (google it). Most dealers carry the remote housing that your key "blade" portion and electronics can be transfered to. Cost is about $20 to $30. If this about a key with remote that is no longer working check to see if it is properly synced with the car (see you owners manual), very easy to do.
Each remote takes ( 2 ) coin style 3 volt lithium batteries ( # 2016 )
Try: http://www.programyourremote.com/ It has instructions for 1997-2000 models, perhaps they'll work with the 1996 model. Good luck!
I need to replace the front disk pads on my 1996 MB E300