GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Did you perform the Power Sunroof System Check?

--

Go to Step 2

Go to Power Sunroof System Check

2

  1. Disconnect the sunroof control module connector.
  2. Test for continuity using a J 39200 between cavity 8 of the sunroof control module connector and ground.

Does continuity exist?

--

Go to Step 3

Go to Step 7

3

Test for continuity using a J 39200 between cavity 9 of the sunroof control module connector and ground.

Does continuity exist?

--

Go to Step 4

Go to Step 8

4

Test for continuity using a J 39200 between cavity 2 of the sunroof control module connector and ground while depressing the SLIDE switch to the close position.

Does continuity exist?

--

Go to Step 5

Go to Step 6

5

Replace the sunroof control module.

Is the repair complete?

--

Go to Power Sunroof System Check

--

6

  1. Disconnect the sunroof switch assembly connector. Refer to Sunroof Switch Replacement for access.
  2. Test for continuity using a J 39200 between cavity 2 of the control module connector and cavity 6 of the sunroof switch assembly connector.

Does continuity exist?

--

Go to Step  12

Go to Step 9

7

  1. Disconnect the sunroof actuator assembly connector. Refer to Sunroof Actuator Replacement for access.
  2. Test for continuity using a J 39200 between cavity 8 of the sunroof control module connector and cavity 5 of the sunroof actuator connector.

Does continuity exist?

--

Go to Step  13

Go to Step 10

8

  1. Disconnect the sunroof actuator assembly connector. Refer to Sunroof Actuator Replacement for access.
  2. Test for continuity using a J 39200 between cavity 9 of the sunroof control module connector and cavity 6 of the sunroof actuator connector.

Does continuity exist?

--

Go to Step  13

Go to Step 11

9

Repair the open in the GRN/YEL wire between the sunroof control module and the sunroof switch assembly. Refer to Wiring Repairs in wiring systems.

Is the repair complete?

--

Go to Power Sunroof System Check

--

10

Repair the open in the GRN/WHT wire between the sunroof control module and the sunroof actuator. Refer to Wiring Repairs in wiring systems.

Is the repair complete?

--

Go to Power Sunroof System Check

--

11

Repair the open in the RED/BLU wire between the sunroof control module and the sunroof actuator. Refer to Wiring Repairs in wiring systems.

Is the repair complete?

--

Go to Power Sunroof System Check

--

12

Replace the sunroof switch assembly. Refer to Sunroof Switch Replacement in Power Sunroof.

Is the repair complete?

--

Go to Power Sunroof System Check

--

13

Replace the sunroof actuator assembly. Refer to Sunroof Actuator Replacement .

Is the repair complete?

--

Go to Power Sunroof System Check

--