Test Description

WARNING: This page is about a different car, the 2003 GMC Sierra and 2003 Chevrolet Silverado. 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.

3. This step tests the VSS assembly circuit.
4. This step tests the integrity of the VSS assembly.

Fig 1: DTC P0503 (Steps 1 - 2)

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Fig 2: DTC P0503 (Steps 3 - 12)

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Fig 3: DTC P0503 (Steps 13 - 15)

Courtesy of GENERAL MOTORS CORP.