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Home >> GMC >> 2002 >> Yukon Denali >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Accessories Control Systems >> Garage Door Opener >> Diagnostic Information and Procedures >> Garage Door Opener Inoperative

Garage Door Opener Inoperative

Garage Door Opener Inoperative

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 3 buttons illuminate the LED?
Go to Step 4  Go to Step 3 
3 Do any buttons illuminate the LED? Go to Step 9  Go to Step 5 
4
  1. Place the J 41540  HomeLink Tester, adjacent to the GDO as indicated.
  2. Operate each button on the garage door opener.
Does the J 41540  verify each button when pressed?
Go to Step 9  Go to Step 8 
5 Test the Switched Ignition Voltage circuit for an open, high resistance or a short to ground. Refer to CIRCUIT TESTING and WIRING REPAIRS .
Did you find and correct the condition?
Go to Step 11  Go to Step 6 
6 Test the Inadvertent Power Supply circuit for an open, high resistance or short to ground. Refer to CIRCUIT TESTING and WIRING REPAIRS .
Did you find and correct the condition?
Go to Step 11  Go to Step 7 
7 Test the ground circuit for an open or high resistance. Refer to CIRCUIT TESTING and WIRING REPAIRS .
Did you find and correct the condition?
Go to Step 11  Go to Step 8 
8 Inspect for poor connection at the harness connector. Refer to TESTING FOR INTERMITTENT AND POOR CONNECTIONS and CONNECTOR REPAIRS .
Did you find and correct the condition?
Go to Step 11  Go to Step 9 
9 Replace the garage door opener.
Did you complete the replacement?
Go to Step 10  -
10 Program the garage door opener. Refer to Garage Door Opener Programming - Universal .
Did you complete the procedure?
Go to Step 11  -
11 Operate the system 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 1-800-355-3515