GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Did you perform the Remote Keyless Entry Diagnostic System Check?

--

Go to Step  2

Go to Diagnostic System Check - Remote Keyless Entry

2

Is the remote keyless entry system inoperative from both transmitters?

--

Go to Step 3

Go to Step 4

3

Reprogram the transmitters. Refer to Transmitter Programming .

Do the transmitters now operate?

--

Go to Diagnostic System Check - Remote Keyless Entry

Go to Step 5

4

  1. Replace the transmitter battery.
  2. Resynchronize the transmitter. Refer to Transmitter Synchronization .

Does the transmitter operate?

--

Go to Diagnostic System Check - Remote Keyless Entry

Go to Step 10

5

  1. Turn the ignition off.
  2. Disconnect the remote function actuator (RFA) module.
  3. Measure the voltage from the following RFA module connectors to ground:
  4. • Terminal  1
    • Terminal  A (w/export)

Is the voltage within the specified range?

10 -15 V

Go to Step 7

Go to Step 6

6

Repair the open or short to ground in CKT 2640 (ORN).

Is the repair complete?

--

Go to Diagnostic System Check - Remote Keyless Entry

--

7

Measure the voltage between the following RFA module connectors:

    • Terminal 1 to terminal 4
    • Terminal A to terminal C (w/export)

Is the voltage within the specified range?

10 -15 V

Go to Step 9

Go to Step 8

8

Repair the open in CKT 1051 (BLK).

Is the repair complete?

--

Go to Diagnostic System Check - Remote Keyless Entry

--

9

Replace the RFA module. Refer to Remote Control Door Lock Receiver Replacement .

Is the repair complete?

--

Go to Diagnostic System Check - Remote Keyless Entry

--

10

Replace the transmitter. Refer to Transmitter Replacement .

Is the repair complete?

--

Go to Diagnostic System Check - Remote Keyless Entry

--