wjt_73 :
This is for all 97 GM front wheel drive vans:
NOTE: YOU MUST PROGRAM ALL TRANSMITTERS AT THIS TIME. YOU WILL LOOSE PROGRAMMING TO ANY PREVIOUS TRANSMITTER.
1) Remove Key from ignition switch
2) Remove BCM PRGRM fuse located in the interior fuse box.
3) Close all doors and liftgate
4) Turn ignition to ACC, OFF, ACC within one second
5) Open and close any vehicle door. A chime will be heard when BCM enters programming mode
6) Press and hold LOCK and UNLOCK buttons on the remote for 15 seconds
7) Repeat step 6 for all additional transmitters (up to 4)
8) Turn off key, and replace BCM PRGRM fuse
Test for proper function of all remotes.