GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

  1. Turn the ignition OFF.
  2. Roll down the windows.
  3. Close all of the doors.
  4. Connect a scan tool.
  5. Turn the ignition to the ON position.
  6. Using the scan tool, inspect for any DTCs in the body control module (BCM).

Does the scan tool show any DTCs?

--

Go to Diagnostic System Check - Body Control System in Body Controls

Go to Step 2

2

Does the remote control door locks function properly?

--

Go to Step 3

Go to Keyless Entry System Inoperative .

3

  1. Turn the ignition OFF.
  2. Using the scan tool, read the last RFA cmd. Since wake-up.
  3. While reading the scan tool, depress the panic button on the transmitter.

Does the scan tool show panic?

--

Go to Step 4

Go to Step 5

4

Does the horn sound and the exterior lights flash?

--

Go to Step 9

Go to Content Theft Deterrent (CTD) System Check in Theft Deterrent

5

  1. Using the scan tool, program the transmitter(s). Refer to Transmitter Programming .
  2. Using the scan tool, read the last RFA cmd. Since wake-up.
  3. While reading the scan tool, depress the panic button on the transmitter.

Does the scan tool show panic?

--

System OK

Go to Step 6

6

  1. Try a known good transmitter.
  2. Using the scan tool, read the last RFA cmd. Since wake-up.
  3. While reading the scan tool, depress the panic button on the transmitter.

Does the scan tool show panic?

--

Go to Step 7

Go to Step 8

7

  1. Replace the transmitter.
  2. Using the scan tool, program the transmitter(s). Refer to Transmitter Programming .

Is the repair complete?

--

System OK

--

8

  1. Replace the remote control door lock receiver.
  2. Using the scan tool, program the transmitter(s).

Is the repair complete?

--

System OK

--

9

Using the scan tool, program the transmitter(s). Refer to Transmitter Programming .

Is the repair complete?

--

System OK

--