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Home >> Chevrolet >> 2001 >> Venture Base, Van Passenger >> Repair and Diagnosis >> External Pages >> Different car >> Section 681 (Body Rear End) >> Diagnostic Information and Procedures >> Diagnostic System Check - Body Rear End >> Test Description

Test Description

WARNING: This page is about a different car, the 2003 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.

The number(s) below refer to the step number(s) on the diagnostic table.

  1. Lack of communication may be due to a partial malfunction of the class 2 serial data circuit or due to a total malfunction of the class 2 serial data circuit. The specified procedure will determine the particular condition.
  2. Determine if any Body Control Module or Powertrain Control Module DTCs are present.
  3. The presence of DTCs which begin with "U" indicate some other module is not communicating. The specified procedure will compile all the available information before tests are performed.
    Fig 1: Diagnostic System Check - Body Rear End
    G01451953Courtesy of GENERAL MOTORS CORP.
Fig 2: Scan Tool Output Controls
G01451954Courtesy of GENERAL MOTORS CORP.
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