Test Description

WARNING: This page is about a different car, the 2002 Buick Regal and 2002 Buick Century. However, it is still accessible from the selected car via links, so may be relevant.

The numbers below refer to the step numbers on the diagnostic table.

2. This step will test the if the sunroof will slide to the open position. If it opens, then inspect the limit switch LS2 for a stuck switch causing an intermittent short to ground.
4. Testing for a short to ground in the LS2 limit switch circuit or a stuck limit switch (closed).

Fig 1: Identifying Power Sunroof Does Not Open Diagnostic Table

Courtesy of GENERAL MOTORS CORP.