GM Service Manual Online
For 1990-2009 cars only

Conditions for Running the DTC

At least 50 consecutive digital RF messages were received from a remote control door lock transmitter that is programmed to the BCM, but the messages did not pass the encryption security test. The BCM will cease processing any remote control door lock transmitter digital RF messages (good or bad) for 20 seconds.

Conditions for Setting the DTC

The remote control door lock transmitter has been in the program mode out of range of the BCM. This malfunction could also occur if the remote control door lock transmitter itself is defective.

Action Taken When the DTC Sets

No remote function capability.

Conditions for Clearing the MIL/DTC

Fault is corrected and DTC memory clearing procedure is completed.

Diagnostic Aids

A possible cause is the remote control door lock transmitter is out of sync with BCM. To synchronize the transmitter to the BCM, press the lock and unlock buttons on the transmitter at the same time for 5 seconds. This malfunction could be induced prior to the BCM entering the diagnostic mode.

Step

Action

Value(s)

Yes

No

1

  1. Enter BCM diagnostic mode.
  2. Reprogram remote control door lock transmitter.

Is reprogramming complete?

--

System OK

Go to Step 2

2

  1. Replace remote control door lock transmitter.
  2. Reprogram remote control door lock transmitter and BCM.

Is reprogramming complete?

--

System OK

Go to Step 3

3

  1. Replace BCM.
  2. Reprogram remote control door lock transmitter and BCM.

Is reprogramming complete?

--

System OK