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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> Brakes >> Traction Control >> Antilock Brake System >> Diagnostic Information and Procedures >> DTC C0221 to C0227: Wheel Speed Sensor Circuit >> Test Description

Test Description

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

  1. 3

    Measure the resistance of the wheel speed sensor in order to determine if the sensor has a valid resistance value.

  2. 4

    Ensures that the wheel speed sensor is generating a valid AC voltage output.
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