GM Service Manual Online
For 1990-2009 cars only

Step

Action

Yes

No

1

Did you perform the Diagnostic System Check - Vehicle?

Go to Step 2

Go to Diagnostic System Check - Vehicle

2

Important: Inspect that the keyless entry transmitter is the correct model for the vehicle remote system. A wrong model transmitter will not activate the vehicle remote system.

Press each button of the transmitter one at a time.

Does the system operate normally?

Go to Testing for Intermittent Conditions and Poor Connections

Go to Step 3

3

Lock and unlock the door locks using the controls inside the vehicle.

Do the locks operate properly?

Go to Step 4

Go to Power Door Locks Inoperative - All Doors and Switches

4

  1. Reprogram the transmitter. Refer to Transmitter Programming .
  2. Press each button of the transmitter one at a time.

Does the system operate normally?

Go to Step 8

Go to Step 5

5

  1. Install a scan tool. Select body control module (BCM), Data Display, Door Locks, and monitor the remote lock, unlock, and panic command parameters.
  2. Press each button of the transmitter one at a time.

Does the appropriate scan tool parameter indicate Yes after each button is pressed?

Go to Step 7

Go to Step 6

6

Important: The transmitter programming procedure must be performed whenever a transmitter is replaced. Refer to Transmitter Programming .

  1. Replace the transmitter.
  2. Press each button of the transmitter one at a time.

Does the system operate normally?

Go to Step 8

Go to Step 7

7

Important: When replacing the BCM, perform the BCM programming procedure. Also program all transmitters. Refer to Transmitter Programming .

Replace the BCM. Refer to Control Module References for replacement, setup, and programming.

Did you complete the replacement?

Go to Step 8

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8

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 3