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Home >> Chevrolet >> 2020 >> Express 2500 LS, 6.0L Eng VIN G >> Repair and Diagnosis >> External Pages >> Different car >> Section 79 (HVAC - Manual) >> Diagnostic Information and Procedures >> Blower Motor Malfunction >> Component Testing

Component Testing

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  1. Ignition OFF, disconnect the harness connector at the blower motor.
  2. Install a 40-amp fused jumper wire between the control circuit terminal B and 12 volts. Install a jumper wire between the ground circuit terminal A and ground. Verify the blower motor activates.
    • If the blower motor does not activate, replace the blower motor.
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