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HOMESERVICE MANUALSCHEVROLET2006SUBURBAN C2500, 6.0 UREPAIR AND DIAGNOSISBRAKESANTILOCK BRAKE SYSTEM WITH TRACTION CONTROL SYSTEM & STABILITY CONTROL SYSTEMDIAGNOSTIC INFORMATION AND PROCEDURESDTC C0455TEST DESCRIPTION
2006 Chevrolet Suburban C2500, 6.0 U

Test Description

2006 Chevrolet Suburban C2500, 6.0 USECTION Test Description

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

  1. 2:  If the DTC sets without turning the steering wheel, or driving the vehicle, a malfunction exists in the analog steering wheel position signal to the BCM, and the BCM has set DTC C0472 or C0473.
DTC C0455

Step Action Values Yes No
Schematic Reference: ABS Schematics  or Power Distribution Schematics and Ground Distribution Schematics
Connector End View Reference: ABS Connector End Views  and Suspension Controls Connector End Views
1 Did you perform the Diagnostic System Check - Vehicle? - Go to Step 2  Go to Diagnostic System Check - Vehicle
2 
IMPORTANT: Center the steering wheel before proceeding with this step. Do not rotate the steering wheel while performing this step.
  1. Use the scan tool to clear the DTCs.
  2. Turn OFF the ignition for 5 seconds.
  3. Turn ON the ignition.
  4. Wait approximately 5 seconds to verify whether or not the DTC sets.
Does the DTC set?		 - Go to DTC C0472 or C0473  Go to Step 3 
3 Operate the vehicle within the Conditions for Running the DTC, as specified in the supporting text.
Does the DTC set?		 - Go to Step 4  Go to Diagnostic Aids
4
  1. Select Body Control Module/Data Display/Data on the scan tool.
  2. Center the steering wheel and verify that the front wheels are straight ahead.
  3. Observe the Steering Wheel Sensor Signal parameter.
Does the scan tool display an Steering Wheel Sensor Signal within the specified range?		 2.3-2.7 V Go to Step 5  Go to Step 9 
5
  1. Turn OFF the ignition.
  2. Disconnect the steering wheel position sensor harness connector. Refer to Steering Wheel Position Sensor or Steering Shaft Lower Bearing Replacement .
  3. Disconnect the electronic brake control module (EBCM) harness connector. Refer to Electronic Brake Control Module Replacement (w/o JL4)  or Electronic Brake Control Module Replacement (w/JL4) .
  4. Turn ON the ignition.
  5. Test the steering wheel position circuits, signal A and signal B for the following:
Did you find and correct the condition?		 - Go to Step 10  Go to Step 6 
6 Test the battery positive voltage circuit to the steering wheel position sensor for an intermittent open. Refer to Testing for Electrical Intermittents and Wiring Repairs .
Did you find and correct the condition?		 - Go to Step 10  Go to Step 7 
7 Test both of the steering wheel position sensor ground circuits for an intermittent open. Refer to Testing for Electrical Intermittents and Wiring Repairs .
Did you find and correct the condition?		 - Go to Step 10  Go to Step 8 
8 Inspect for poor connections at the harness connector of the steering wheel position sensor and at the harness connector of the EBCM. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .
Did you find and correct the condition?		 - Go to Step 10  Go to Step 9 
9 Replace the steering wheel position sensor. Refer to Steering Wheel Position Sensor or Steering Shaft Lower Bearing Replacement .
Did you complete the replacement?		 - Go to Step 10  -
10
  1. Use the scan tool Clear All Class 2 DTCs function to clear all of the DTCs from all modules.
  2. Turn OFF the ignition for 5 seconds.
  3. Turn ON the ignition.
  4. Operate the vehicle within the Conditions for Running the DTC, as specified in the supporting text.
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.