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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 359 (Transfer Case - Mp 3010-NP0) >> Diagnostic Information and Procedures >> DTC C0321 >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, 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.
  1. Key ON, engine OFF.
  2. Connect a scan tool.
  3. Parking brake engaged. Transmission in Neutral.
  4. Using the Transfer Case Lock function of the Special Function feature of the scan tool, command the transfer case lock ON and OFF. You should be able to hear the encoder motor lock engage and disengage.
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