Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET2006SUBURBAN K1500, 5.3 ZREPAIR AND DIAGNOSIS (SINGLE PAGE)BRAKESANTILOCK BRAKE SYSTEM WITH TRACTION CONTROL SYSTEM & STABILITY CONTROL SYSTEMDIAGNOSTIC INFORMATION AND PROCEDURESDTC C0455DIAGNOSTIC AIDS
2006 Chevrolet Suburban K1500, 5.3 Z
Diagnostic Aids
2006 Chevrolet Suburban K1500, 5.3 ZSECTION Diagnostic Aids
- DTC C0455 may be falsely set if you did not turn OFF the ignition for 5 seconds after clearing DTCs from the EBCM. This is why all diagnostic tables which apply to this system always instruct you to turn OFF the ignition for 5 seconds after clearing DTCs. If this DTC has set after you cleared DTCs from the EBCM, or used the scan tool to clear all DTCs from all modules, and you did not cycle the ignition afterward, it is likely that no actual malfunction exists.
- Whenever any one of the steering signals to the EBCM is lost, the scan tool displays a fixed steering wheel position, which indicates the last known steering wheel position. This can aid you in diagnosing an intermittent malfunction.
- If the DTC does not reset during step 2 or 3 of the diagnostic procedure, the stability system disabled message may be displayed due to an unsuccessful initialization. This occurs if the EBCM does not receive any signal from one or both of the digital inputs during the entire ignition cycle. If this occurs, refer to Stability System Disabled Indicator Always On for further diagnosis.
- Inspect the vehicle for proper wheel alignment. Ensure the vehicle does not pull toward the left or right while driving straight forward on a level surface.
- Communicate with the customer to determine the conditions under which the message center displays the service stability system message. Learning the conditions under which the DTC sets may help you duplicate the failure.
- Use the Snapshot function on the scan tool in order to assist you in locating an intermittent malfunction.
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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.