1993 TAHOE 1. HOW CAN I FIND OUT IF TRUCK WAS SET UP FOR KEYLESS ENTRY
2. REAR GLASS DASH BUTTON DONT WORK?
ANY HELP WOULD BE GREATLY APPRECIATTED.

 

it will say in the RPO codes if u have keyless entry or not. if u do a search here u should find it. someone asked about that b4.

as for the the rear glass button check the rear latch. if thats good and u can open it w/ the key in back then its prolly in the wiring.

 

If you take the center console out every one I've seen has the brain for the keyless under it (little black box). I forget the RPO code for it but I'm sure its all over here if you search for keyless.