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Symptoms - Transfer Case: Notes

WARNING: This page is about a different car, the 2004 GMC Yukon XL and 2004 GMC Yukon. However, it is still accessible from the selected car via links, so may be relevant.
IMPORTANT:
  • Perform the Transfer Case Diagnostic System Check before using the Symptom Tables in order to verify that the following statements are true:
    • DTCs are not set.
    • The control modules can communicate via the serial data link.
  • Review the system operation in order to familiarize yourself with the system functions. Refer to Transfer Case Description and Operation .
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