Posted by Verdi on January 08, 03 at 06:09:08:
In Reply to: How do I program a second key FOB on 1999 GMC Suburban K1500 posted by Stoner on January 07, 03 at 18:21:25:
You'll have to program all the fobs at once. Here's the procedure:
Transmitter Programming
When reprogramming the remote control door lock reciever, All transmitters must be programmed at this time in
order for the transmitters to operate the vehicle. Transmitters not programed at this time will not work and the
procedure will have to be redone with all the transmitters.
1.Ground pin 4 to pin 8 of the data link connector (DLC). The receiver will respond by locking and unlocking
the doors, and activating the liftgate window release (if equipped) within 2 seconds.
2.Press and hold the LOCK and UNLOCK buttons simultaneously on the first transmitter to be programmed
until the locks cycle (approximately 10 seconds).
3.Repeat step 2 for up to four total transmitters to be programmed (if available). The receiver will respond by
locking and unlocking the doors and activating the liftgate window release (if equipped) within 2 seconds.
4.Remove the ground applied to the DLC.
5.Lock and unlock the doors in order to verify the transmitter operation.
6.Activate the rear window release in order to verify the transmitter operation.
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