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HOMESERVICE MANUALSCHEVROLET2003TRAILBLAZER 4.2 S, 4WDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1788 (POWER STEERING SYSTEM)DIAGNOSTIC INFORMATION AND PROCEDURESDTC C0545TEST DESCRIPTION
2003 Chevrolet TrailBlazer 4.2 S, 4WD

Test Description

2003 Chevrolet TrailBlazer 4.2 S, 4WDSECTION Test Description
WARNING: This page is about a different car, the 2007 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.

The number below refers to the step number on the diagnostic table.

  1. 2:  This step tests the torque sensor in its active state.
DTC C0545

Step Action Values Yes No
Schematic Reference: Power Steering Schematics 
Connector End View Reference: Power Steering Connector End Views 
1 Did you perform the Diagnostic System Check - Vehicle? - Go to Step 2  Go to Diagnostic System Check - Vehicle
2 
  1. Install a scan tool.
  2. Start the engine.
  3. With the scan tool, observe the Torque Sensor Main data parameter in the EPS Data List 2.
  4. Turn the steering wheel 90 degrees to the right and hold the steering wheel position.
Does the scan tool indicate that the Torque Sensor Main data parameter changes state wile turning the steering wheel and is less than the specified value?		 17.2 N.m (12.6 lb ft) Go to Diagnostic Aids Go to Step 3 
3 Replace the electric power steering (EPS) assembly. Refer to Steering Column Replacement .
Did you complete the repair?		 - Go to Step 4  -
4
  1. Use the scan tool in order to clear the DTCs.
  2. Operate the vehicle within the Conditions for Running the DTC.
Does the DTC reset?		 - Go to Step 2  System OK
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.