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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 135 (Immobilizer System) >> Diagnostic Information and Procedures >> DTC B3055 >> Circuit/System Verification

Circuit/System Verification

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2007 GMC Yukon XL, 2007 GMC Yukon, 2007 Chevrolet Tahoe, 2007 Chevrolet Suburban, and 2007 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
IMPORTANT: When using this diagnostic, more than one vehicle key is required to ensure proper diagnosis. If more than one key is not available at the time of service, contact the customer and ask if any other keys can be provided for service. If unavailable, a new second key can be created.
  1. Inspect all available vehicle keys that they are correct vehicle keys.
    • If not a correct vehicle key, replace the key.
  2. While viewing DTCs with a scan tool, attempt to start the vehicle using all of the available keys. The vehicle should start with all available keys.
    • If only one key results in inoperative starting and DTC B3055 is set as current, replace the suspect key.
    • If all available keys result in inoperative starting and DTC B3055 is set as current, replace the TDM.
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