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 DMM between cavity 8 of the sunroof control module and ground.

Does continuity exist?

--

Go to Step 3

Go to Step 5

3

Test for continuity using a J 39200 DMM between cavity 1 and ground while depressing the SLIDE switch to the open position.

Does continuity exist?

--

Go to Step 4

Go to Step 8

4

Replace the sunroof control module.

Is the repair complete?

--

Go to Power Sunroof System Check

--

5

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

Does continuity exist?

--

Go to Step 6

Go to Step 7

6

Replace the actuator assembly. Refer to Sunroof Actuator Replacement .

Is the repair complete?

--

Go to Power Sunroof System Check

--

7

Repair the open in the GRN/WHT wire between the control module and the actuator assembly. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Power Sunroof System Check

--

8

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

Does continuity exist?

--

Go to Step 9

Go to Step 10

9

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

Is the repair complete?

--

Go to Power Sunroof System Check

--

10

Repair the open in the PNK wire between the switch and the module. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Power Sunroof System Check

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