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 in Vehicle DTC Information

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 in Wiring Systems

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 Diagnostic System Check - Vehicle in Vehicle DTC Information

4

Press each button of the transmitter one at a time.

Does the system operate normally?

Go to Step 9

Go to Step 5

5

  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 9

Go to Step 6

6

  1. Install a scan tool. Select 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 8

Go to Step 7

7

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 9

Go to Step 8

8

Replace the BCM. Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming.

Did you complete the replacement?

Go to Step 9

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9

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 3