Steering - No Power Assist/Column Noise/DTC C0460/C0545
Bulletin No.: 04-02-35-009ADate: November 08, 2007
TECHNICAL
Subject:
Noise in Steering Column, Lack of Power Steering Assist, DTCs C0460 and C0545, Steering Wheel Moves Slightly By Itself (Replace Steering Column)
Models:
2004-2005 Chevrolet Malibu
2005 Pontiac G6
Supercede:
This bulletin is being revised to add the 2005 Malibu, the 2005 Pontiac G6 and update the steering column part number.
Please discard Corporate Bulletin Number 04-02-35-009 (Section 02 - Steering Wheel and Column).
Condition
Some customers may comment on any of the following concerns:
A rattle or clunk noise from the left lower instrument panel or foot well area.
With the engine running and the vehicle not moving, the steering wheel may move a few degrees off center, left and right, by itself, without driver input.
With the vehicle in motion, the driver may comment about a steering wheel vibration that feels like a wheel out of balance. This condition does not impair the ability of the driver to control the vehicle.
An intermittent lack of power steering assist.
Technicians may find the following diagnostic trouble codes:
Diagnostic Trouble Code C0460 Symptom 00 (Steering Position Sensor)
Diagnostic Trouble Code C0545 Symptom 00 (Steering Wheel Torque Input Sensor)
Cause
These conditions may be caused by excessive clearance between the assist gears or by a failure of the torque sensor in the steering column.
Noise Diagnosis
Perform the following check as an aid in diagnosing a steering column noise. With the engine running and the vehicle not moving, turn the steering wheel rapidly back and forth an inch or two off center and listen for a click or rattle noise inside the steering column. If these noises are present, it may indicate excessive clearance between the gears inside the steering column.
Correction
Technicians are to install a new steering column kit, P/N 15926870, to correct the conditions listed above. Refer to the Steering Column Replacement procedure in the Steering section of SI.
Parts Information
Warranty Information
For vehicles repaired under warranty, use the table.
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