GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

  1. Check for mechanical binding by cranking the roof manually to a middle position
  2. In order to check the mechanical binding, remove the headliner.

Does the roof move freely?

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Go to Step 2

Go to Step 3

2

  1. Check for a poor connection at the sunroof control module.
  2. If OK, replace the sunroof control module. Refer to Sunroof in Roof.

Has the repair been made and the system rechecked?

--

System OK

--

3

Check for source of binding.

Did you fix binding problem?

--

System OK

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