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 a short to ground using a J 39200 between terminal 9 of the power sunroof control module connector and ground.

Does the wire have a short to ground?

--

Go to Step 5

Go to Step 3

3

Test for continuity using a J 39200 between terminal 3 of the sunroof control module connector and ground while depressing the tilt switch to the Up position.

Does continuity exist?

--

Go to Step 4

Go to Step 10

4

Replace the sunroof control module.

Is the repair complete?

--

Go to Power Sunroof System Check

--

5

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

Does the wire have a short to ground?

--

Go to Step 8

Go to Step 6

6

Test for continuity using a J 39200 between terminal 9 of the control module connector and terminal 6 of the actuator connector.

Does continuity exist?

--

Go to Step 7

Go to Step 9

7

Replace the sunroof actuator. Refer to Sunroof Actuator Replacement .

Is the repair complete?

--

Go to Power Sunroof System Check

--

8

Repair the open in the RED/BLU wire between terminal 9 of the control module connector and terminal 6 of the sunroof actuator connector. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Power Sunroof System Check

--

9

Repair the open in the RED/BLU wire between terminal 9 of the control module connector and terminal 6 of the sunroof actuator connector. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Power Sunroof System Check

--

10

  1. Disconnect the sunroof switch assembly connector. Refer to Sunroof Switch Replacement for access.
  2. Test for continuity using a J 39200 between terminal 3 of the sunroof control module connector and terminal 5 of the sunroof switch assembly connector.

Does continuity exist?

--

Go to Step 11

Go to Step 12

11

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

Is the repair complete?

--

Go to Power Sunroof System Check

--

12

Repair the open in the RED/YEL wire between terminal 5 of the sunroof switch connector and terminal 3 of the sunroof control module connector. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Power Sunroof System Check

--