GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value

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

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 - Door Systems in Doors

4

Operate the rear deck release from the controls inside the vehicle.

Does the decklid release operate properly?

--

Go to Step 5

Go to Rear Compartment Lid Release System Check in Body Rear End

5

Important: Inspect that the keyless entry transmitter is the correct model for the vehicle remote system. A wrong model transmitter may pass this test, but will not activate the vehicle remote system.

  1. Turn on the J 43241 Keyless Entry Tester.
  2. Place the transmitter on the J 43421 test pad.
  3. Press each button of the transmitter one at a time.

Does a tone sound and the green light illuminate on the J 43421 after each button is pressed?

--

Go to Step 10

Go to Step 6

6

Do any of the buttons on the transmitter sound the tone and illuminate the green light when pressed?

--

Go to Step 9

Go to Step 7

7

Replace the transmitter battery. Refer to Transmitter Battery Replacement procedure.

Did you complete the replacement?

--

Go to Step 8

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8

  1. Turn on the J 43241 Keyless Entry Tester.
  2. Place the transmitter on the J43421 test pad.
  3. Press each button of the transmitter one at a time.

Does a tone sound and the green light illuminate on the J43421 after each button is pressed?

--

Go to Step 10

Go to Step 9

9

Replace the transmitter.

Did you complete the replacement?

--

Go to Step 13

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10

Press the PANIC button on the transmitter.

Does the PANIC function operate normally?

--

Go to Step 11

Go to Step 13

11

Perform the synchronization procedure. Refer to Transmitter Synchronization .

Did the horn chirp three times to confirm that the synchronization has been completed?

--

Go to Step 12

Go to Step 13

12

Operate the transmitter within range of the vehicle.

Do all of the Remote Keyless Entry functions operate normally?

--

Go to Step 25

Go to Step 13

13

Important: All transmitters which are to be recognized by the Remote Control Door Lock Receiver must be programmed in a single programming sequence. If the system is placed in program mode it will erase all previously programmed transmitters upon the receipt of the programming signal from the first transmitter.

Perform the programming procedure. Refer to Transmitter Programming .

Did the locks cycle to lock then unlock?

--

Go to Step 25

Go to Step 14

14

  1. Turn OFF the Ignition.
  2. Disconnect the Remote Control Door Lock Receiver.
  3. Probe the battery feed circuit of the Remote Control Door Lock Receiver with a test lamp that is connected to a good ground.

Does the test lamp illuminate?

--

Go to Step 15

Go to Step 23

15

Connect a test lamp between the ground circuit of the Remote Control Door Lock Receiver and the battery feed circuit of the Remote Control Door Lock Receiver.

Does the test lamp illuminate?

--

Go to Step 16

Go to Step 24

16

  1. Disconnect the test lamp.
  2. Turn ON the ignition, with the engine OFF.
  3. Measure the voltage between the RFA data link circuit and the the ground circuit of the Remote Control Door Lock Receiver.

Does the voltage measure within the specified range?

B+

Go to Step 17

Go to Step 18

17

Important: The BCM provides a 12 volt signal to this circuit with the BCM still connected and the ignition ON. You must test for a short to voltage from another source which could interrupt communication before replacing the Remote Control Door Lock Receiver.

Test the RFA Data Link Circuit for a short to voltage.

Did you find and correct the condition?

--

Go to Step 25

Go to Step 19

18

Test the RFA Data link Circuit for an open, high resistance, or short to ground.

Did you find and correct the condition?

--

Go to Step 25

Go to Step 20

19

Inspect for poor connections at the harness connector of the Remote Control Door Lock Receiver. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and correct the condition?

--

Go to Step 25

Go to Step 21

20

Inspect for poor connections at the harness connector of the Body Control Module. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and correct the condition?

--

Go to Step 25

Go to Step 22

21

Important: All transmitters which are to be recognized by the Remote Control Door Lock Receiver must be programmed in a single programming sequence. If the system is placed in program mode it will erase all previously programmed transmitters upon the receipt of the programming signal from the first transmitter. Refer to Transmitter Programming .

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

Did you complete the replacement?

--

Go to Step 25

--

22

  1. Replace the Body Control Module. Refer to Body Control Module Replacement in Body Control System.
  2. Perform the set up procedure for the Body Control Module. Refer to Body Control Module (BCM) Programming/RPO Configuration in Body Control System.

Did you complete the replacement?

--

Go to Step 25

--

23

Repair the open, high resistance , or short to ground in the battery feed circuit of the Remote Control Door Lock Receiver. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you complete the repair?

--

Go to Step 25

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24

Repair the open or high resistance in the ground circuit of the Remote Control Door Lock Receiver. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you complete the repair?

--

Go to Step 25

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25

Operate the system in order to verify the repair.

Did you correct the condition?

--

System OK

Go to Step 3