GM Service Manual Online
For 1990-2009 cars only

Step

Action

Yes

No

1

Did you perform the 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

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 9

Go to Step 5

5

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

Go to Step 8

Go to Step 6

6

Replace the transmitter battery. Refer to Transmitter Battery Replacement .

Did you complete the replacement?

Go to Step 7

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7

  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 9

Go to Step 8

8

Replace the transmitter.

Did you complete the replacement?

Go to Step 9

--

9

Perform the transmitter programming procedure. Refer to Transmitter Programming

Did the locks cycle to lock then unlock?

Go to Step 11

Go to Step 10

10

Important: When replacing the Liftgate Module (LGM), perform the Liftgate Module programming procedure and then the transmitter programming procedure.

Replace the LGM

Refer to Liftgate Control Module Replacement in Body Rear End.

Refer to Transmitter Programming in Keyless Entry.

Did you complete the replacement?

Go to Step 11

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11

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 3