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Home >> Pontiac >> 2001 >> Aztek Base, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 50 (Engine Control System - Self-Diagnostics - 4.2L) >> Diagnostic Tests >> DTC P0502: Vehicle Speed Sensor Low Output >> Test Description
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Test Description

WARNING: This page is about a different car, the 2002 Oldsmobile Bravada, 2002 GMC Envoy XL, 2002 GMC Envoy, and 2002 Chevrolet TrailBlazer. 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 procedures.

  1. 3

    This step tests the VSS assembly circuit.

  2. 4

    This step tests the integrity of the VSS assembly.

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