Help w key fob

[bigfeet]

Hello everyone. I got my 98 two door Tahoe back today from the bodyshop. I had a complete paint job done, panels and mirrors removed and sprayed off the truck. Alot of the truck was in pieces and put back together. My key fob will not work, new battery in it. Im thinking something in the door is not connected, any ideas? The power locks still work manually.

 

[SunlitComet]

If they key is in the ON position during the programming procedure, the horn chirp will be disabled, it the key is in the OFF position, the horn chirp will be enabled. The horn will chirp when the lock button is pressed two times.

When reprogramming the remote control door lock receiver, 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 (it 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 (it 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 verity the transmitter operation.
6. Activate the rear window release in order to verify the transmitter operation.

---------- Post added at 11:10 PM ---------- Previous post was at 11:10 PM ----------

1. Resynchronization may be necessary due to the security method used by the RKE system. The transmitter does not send the same signal twice to the receiver.
2. The receiver will not respond to a signal which has been previously sent. This prevents anyone from recording and playing back the signal from the transmitter.
3. Resynchronization will be necessary if any of the following are true:

• • You change the transmitter battery.
  • You disconnect the vehicle battery.
  • You push the transmitter button 256 times out of the range of the receiver.

1. In order to resynchronize the transmitter with the receiver, perform the following steps:

4.1. Stand close to the vehicle. 4.2.
The door locks should cycle to confirm resynchronization.

---------- Post added at 11:14 PM ---------- Previous post was at 11:10 PM ----------

System Diagram

Notes

Data Link Connector (DLC) Schematics

 

[vtx1800sba]

Yeah what he said....errrr. I think......Hang on i need more ice.

 

[99Yuk]

A month ago, I accidentally drained my battery dead, then without knowing that, I used my keyfob as per usual.... That took my keyfob out of sync with my truck...

After I got my truck running again, I reprogrammed the keyfob by turning the key to the run position without starting it and pressed both buttons on the keyfob at the same time. All doors locked and then unlocked. It's been great ever since.

No grounding of DLC pins or anything.. Try this first, it may work, it may not.