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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 305 (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 2011 GMC Yukon XL, 2011 GMC Yukon, 2011 Chevrolet Tahoe, 2011 Chevrolet Suburban, and 2011 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 (with HP2) , Diagnostic System Check - Vehicle (without HP2) 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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