GM Service Manual Online
For 1990-2009 cars only

Step

Action

Yes

No

Schematic Reference: Sunroof Schematics

1

Did you perform the Power Sunroof Diagnostic System Check?

Go to Step 2

Go to Diagnostic System Check - Power Sunroof

2

Perform the sunroof re-initialization. Refer to Sunroof Motor/Actuator Synchronization .

Does the express open feature operate normally?

System OK

Go to Step 3

3

Replace the power sunroof module. Refer to Sunroof Motor/Actuator Replacement .

Did you make the replacement?

Go to Step 4

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4

  1. Perform the sunroof re-initialization. Refer to Sunroof Motor/Actuator Synchronization .
  2. Operate the system in order to verify the repair?

Did you correct the condition?

System OK

Go to Step 2