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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1168 (Automatic Transmission - 4L60-E/4L65-E (Service & Replacement)) >> Diagnostic Information and Procedures >> DTC P0503: Transmission Output Speed Drop Is Greater Than 1,300 Rpm, For 3 Seconds >> 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 numbers below refer to the step numbers on the diagnostic table.

  1. 2. Disable the traction control system when performing this step. When the ignition switch is cycled OFF and then back ON, the traction control system defaults to ON.
  2. 3. This step tests the VSS assembly.
  3. 5. This step tests the integrity of the VSS assembly.
    Fig 1: DTC P0503 (1 Of 2)
    G01972753Courtesy of GENERAL MOTORS CORP.
    Fig 2: DTC P0503 (2 Of 2)
    G01972754Courtesy of GENERAL MOTORS CORP.
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