GM Service Manual Online
For 1990-2009 cars only

Step

Action

Yes

No

1

Did you review the Garage Door Opener Description and Operation and perform the necessary inspections?

Go to Step 2

Go to Garage Door Opener Description and Operation

2

Important: If the vehicle is equipped with a valet switch verify that the switch is in the off position.

Operate each button on the garage door opener one at a time.

Do all three buttons illuminate the LED?

Go to Step 4

Go to Step 3

3

Do any buttons illuminate the LED?

Go to Step 8

Go to Step 5

4

  1. Place theJ 43241 Keyless Entry Tester adjacent to the GDO as indicated.
  2. Operate each button on the garage door opener.

Does the J 43241 verify each button when pressed?

Go to Step 9

Go to Step 8

5

Test the garage door opener battery positive voltage circuit for an open, high resistance or a short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 10

Go to Step 6

6

Test the garage door opener ground circuit for an open or high resistance. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 10

Go to Step 7

7

Inspect for poor connection at the garage door opener harness connector. 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 10

Go to Step 8

8

Replace the garage door opener.

Did you complete the replacement?

Go to Step 9

 

9

Program the garage door opener. Refer to Garage Door Opener Programming - Universal .

Did you complete the procedure?

Go to Step 10

 

10

Return the vehicle to the customer in order to verify the repair.

Does the garage door opener operate properly for the customer?

System OK

Advise the customer to call HomeLink® at 800-355-3515