GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Did you perform the Remote Keyless Entry System Check?

--

Go to Step 2

Go to Remote Keyless Entry System Check

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 Remote Control Door Lock Reprogramming .

Do the transmitters now work?

--

Go to Step 13

Go to Step 5

4

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

Does the transmitter now work?

--

Go to Step 13

Go to Step 12

5

  1. Turn the ignition switch to OFF.
  2. Disconnect the remote function actuator (RFA) module connector.
  3. Measure the voltage between the RFA module connector terminal A16 and 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 2040 (ORN).

Did you complete the repair?

--

Go to Step 13

--

7

Measure the voltage between the RFA module connector terminal A15 and ground.

Is the voltage within the specified range?

10-15 V

Go to Step 9

Go to Step 8

8

Repair the open or short to ground in CKT 39 (PNK).

Did you complete the repair?

--

Go to Step 13

--

9

Measure the voltage between the RFA module connector terminals E16 and F16.

Is the measured voltage within the specified range?

10-15 V

Go to Step 11

Go to Step 10

10

Repair the open in CKT 1040 (BLK).

Did you complete the repair?

--

Go to Step 13

--

11

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

Did you complete the repair?

--

Go to Step 13

--

12

Replace the transmitter. Refer to Transmitter Replacement .

Is the repair complete?

--

Go to Step 13

--

13

  1. Ensure that any components removed during diagnosis are installed in place.
  2. Ensure that all of the connectors are connected.

Is the repair complete?

--

Go to Remote Keyless Entry System Check

--