Keyless entry module location?

Tiny
SYNIKOL
  • MEMBER
  • 1999 GMC YUKON
  • V8
  • 2WD
  • AUTOMATIC
  • 16,000 MILES
This morning I found that the battery (fairly new Interstate...) had run down to nothing and my keyless entry wouldn't open the doors. I manually opened the drivers door and could hear a clicking noise under the dash. I have traced this down to the RCDLR module. I was able to disconnect the unit, my door locks still work with the door buttons. I had removed the battery from my fob / transmitter to make sure it wasn't malfunctioning. So basically, the cigarette lighter, lumbar adjust, gauges and everything on the circuit still works, I've just lost the ability to remote lock / unlock. My question is, are these particular modules known to fail, or is it more likely that a bad actuator is sending a faulty signal to it causing it to cycle? The "clicking" was about as rapid as if I had the flashers on. Constant. Any help would be appreciated, as I can't even locate a GM part number for this part. I might also add that it's in an EXTREMELY difficult spot to get to under the dash.

Thanks. ~Mark


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Sunday, March 22nd, 2009 AT 12:12 PM

3 Replies

Tiny
DAVE H
  • EXPERT
Hello

It could need to be reset, here are the instructions and how to replace it below.

TRANSMITTER SYNCHRONIZATION
Transmitter synchronization 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.
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.
Resynchronization will be necessary if any of the following occur:
You change the transmitter battery.
You disconnect the vehicle battery.
You push the transmitter button 256 times out of the range of the receiver.
In order to synchronize the transmitter with the receiver, perform the following:
Stand close to the vehicle.
Simultaneously press and hold the LOCK and UNLOCK buttons on the transmitter for seven seconds.
The door locks should cycle to confirm synchronization.

Check out the diagrams (Below). Please let us know what happens.
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Sunday, March 22nd, 2009 AT 8:49 PM
Tiny
SYNIKOL
  • MEMBER
Thank you, I got a new module today it worked perfect thanks for the instructions.
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Monday, March 23rd, 2009 AT 7:55 AM
Tiny
DAVE H
  • EXPERT
Nice work, we are here to help, please use 2CarPros anytime.
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Monday, March 23rd, 2009 AT 3:14 PM

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