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Home >> Hummer >> 2005 >> H2 4D Utility Pickup >> Repair and Diagnosis >> Body & Frame >> Windows >> Door System >> Diagnostic Information And Procedures >> Symptoms - Doors >> Notes

Symptoms - Doors: Notes

IMPORTANT: The following steps must be completed before using the symptom tables.
  1. Perform the Diagnostic System Check - Vehicle in Vehicle DTC Information, before using the Symptom Tables in order to verify that all of the following are true:
    • There are no DTCs set.
    • The control modules can communicate via the serial data link.
  2. Review the system operation in order to familiarize yourself with the system functions. Refer to the following system descriptions: