GM Service Manual Online
For 1990-2009 cars only

Step

Action

Yes

No

1

Did you review the Keyless Entry System Description and Operation and perform the necessary inspections?

Go to Step 2

Go to Keyless Entry System Description and Operation

2

Press each button of the transmitter one at a time.

Does the system operate normally?

Go to Testing for Intermittent 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 Symptoms - Doors 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 43241Keyless 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.
  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 11

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9

Perform the synchronization procedure. Refer to Transmitter Synchronization.

Did the locks cycle to lock then unlock?

Go to Step 10

Go to Step 11

10

Operate the transmitter within range of the vehicle.

Do all of the keyless entry functions operate normally?

Go to Step 15

Go to Step 11

11

Important: All transmitters which are to be recognized by the remote control door lock receiver (RCDLR) 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 15

Go to Step 12

12

  1. Disconnect the RCDLR harness connector.
  2. Test the Battery Positive voltage circuit for opens or shorts to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
  3. Test the Ignition Positive voltage for opens or shorts to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 15

Go to Step 13

13

Test the ground circuit for opens. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 15

Go to Step 14

14

Test the class 2 circuit for an open or a short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Go to Step 16

Go to Step 15

15

Important: Perform the transmitter programming procedure when replacing the RCDLR.

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

Did you complete the replacement?

Go to Step 16

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16

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 2