GM Service Manual Online
For 1990-2009 cars only

Conditions for Setting the DTC

The signal was received by the BCM from a remote control door lock transmitter that was programmed to the BCM. The message did not pass the encryption security test.

Action Taken When the DTC Sets

All of the remote control door lock transmitter functions do not operate.

Conditions for Clearing the DTC

DTC 44 is set when all of the following conditions occur:

    • The BCM is in the diagnostic mode.
    • Any button on the remote control door lock transmitter is pressed.
    • The transmitter signal does not pass the encryption security test.

DTC 44 is automatically cleared after it is displayed. Any button on the remote control door lock transmitter must be pressed again to display DTC 44.

Diagnostic Aids

If DTC 44 is set, the remote control door lock transmitter is out of synchronization with the BCM. This can be caused by any of the following conditions:

  1. The transmitter was in the synchronization or program mode while out of the range of the BCM.
  2. The transmitter signal encountered noise from the surrounding environment.
  3. The transmitter was defective.

Step

Action

Value(s)

Yes

No

1

Did you perform the Remote Keyless Entry Diagnostic System Check?

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Go to Step 2

Go to Diagnostic System Check - Remote Keyless Entry

2

Attempt to operate all of the remote functions using the transmitter.

Do all of the transmitter functions operate properly?

--

Go to Step 3

Go to Keyless Entry System Inoperative

3

Important: Perform the set up procedure for the body control module (BCM).

Replace the BCM. Refer to Body Control Module Replacement in Body Control System.

Did you complete the replacement?

--

System OK

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