GM Service Manual Online
For 1990-2009 cars only

Step

Action

Yes

No

1

Did you perform the Diagnostic System Check - Vehicle?

Go to Step 2

Go to Diagnostic System Check - Vehicle in Vehicle DTC Information

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 - Vehicle in Vehicle DTC Information

4

Operate the rear compartment release using the controls inside the vehicle.

Does the rear compartment release operate properly?

Go to Step 5

Go to Diagnostic System Check - Vehicle in Vehicle DTC Information

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 43241 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 43241 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 .

Did you complete the replacement?

Go to Step 8

--

8

  1. Turn ON the J 43241 .
  2. Place the transmitter on the J 43241 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 43241 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 10

--

10

Perform the programming procedure. Refer to Transmitter Programming .

Did the locks cycle to lock then unlock?

Go to Step 12

Go to Step 11

11

Replace the body control module (BCM). Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming.

Did you complete the replacement?

Go to Step 12

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12

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 3