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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 813 (Automatic Transmission - 4L80-E/4L85-E (Service & Replacement)) >> Diagnostic Information and Procedures >> DTC B2722: Tow/Haul Switch Signal Shorted To Ground >> Test Description

Test Description

WARNING: This page is about a different car, the 2003 GMC Yukon XL, 2003 Chevrolet Suburban, and 2003 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.

The numbers below refer to the step numbers on the diagnostic table.

  1. 2. The normal state is the state of the input before activation.
  2. 4. The normal state is the state of the input before activation.
  3. 6. After replacement of the BCM you must calibrate the new module for proper operation.
    Fig 1: Diagnostic Trouble Code (DTC B2722) Table (Step 1-5)
    G02111979Courtesy of GENERAL MOTORS CORP.
    Fig 2: Diagnostic Trouble Code (DTC B2722) Table (Step 6-9)
    G02111980Courtesy of GENERAL MOTORS CORP.
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