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Home >> Chevrolet >> 2006 >> Silverado 1500 HD, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1140 (HVAC System - Automatic) >> Diagnostic Information and Procedures >> Blower Motor Malfunction >> Component Testing

Component Testing

WARNING: This page is about a different car, the 2008 Cadillac CTS. However, it is still accessible from the selected car via links, so may be relevant.

Blower Motor

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