How you can Test the Wheel Speed Sensor on a 2002 Chevy Avalanche 1Place the ignition in the "OFF" position and put the Avalanche in park. Activate the parking brake. Return the ignition to the "ON" position, but tend not to commence the engine.2Locate the truck's 16-pin diagnostic information port, underneath the dashboard area on the driver's side.
Connect an automotive scan tool to the diagnostic data port and power on the tool diagnostic car tool.3Select the "PCM" solution from the scan tool's key menu. Select the "ABS" alternative from the PCM sub-menu. Choose "Wheel Sensors" from the ABS sub-menu.4Start the engine and disengage the parking brake.
Drive the car quite slowly on an empty street or parking lot exactly where there is no danger of hitting something. Glance down at the scan tool and note the displayed valued for every wheel sensor, listed in miles-per-hour. When the values correspond accurately with all the miles-per-hour displayed on the speedometer, then the wheel speed sensors are operating adequately. If one of many sensors reads "0 Auto diagnostic tool," or does not correspond for the vehicle's speedometer, then that sensor is faulty.
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