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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 812 (Automatic Transmission - 4L60-E/4L65-E (Service & Replacement)) >> Diagnostic Information and Procedures >> DTC P0503: Output Speed Drop High >> Test Description

Test Description

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

  1. 3. This step tests the VSS assembly circuit.
  2. 4. This step tests the integrity of the VSS assembly.
    Fig 1: Diagnostic Trouble Code (DTC P0503) (Step 1-3)
    G02111559Courtesy of GENERAL MOTORS CORP.
    Fig 2: Diagnostic Trouble Code (DTC P0503) (Step 4-12)
    G02111560Courtesy of GENERAL MOTORS CORP.
    Fig 3: Diagnostic Trouble Code (DTC P0503) (Step 13-16)
    G02111561Courtesy of GENERAL MOTORS CORP.
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