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 work?

--

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 work?

--

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 RFA module connector terminal  1 to ground:

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).

Refer to Wiring Repairs

Is the repair complete?

--

Go to Diagnostic System Check - Remote Keyless Entry

--

7

Measure the voltage between RFA module connector terminals  1 and  4.

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).

Refer to Wiring Repairs

Is the repair complete?

--

Go to Diagnostic System Check - Remote Keyless Entry

--

9

Replace the RFA module. Refer to RFA Module 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

--