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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 448 (Sunroof System) >> Diagnostic Information and Procedures >> Symptoms - Roof >> Notes

Symptoms - Roof: Notes

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2012 GMC Yukon XL, 2012 GMC Yukon, 2012 Chevrolet Tahoe, 2012 Chevrolet Suburban, and 2012 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:

Complete the following procedures before using the symptom tables.

  1. Perform the Diagnostic System Check - Vehicle in order to verify that all of the following conditions are true:
    • No DTCs are set.
    • The control modules can communicate via the serial data link.
  2. Review the system description and operation in order to learn the system functions. Refer to Sunroof Description and Operation .
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