GM Service Manual Online
For 1990-2009 cars only

Important: Review the system Description and Operation in order to familiarize yourself with the system functions. Refer to Steering Wheel and Column Description and Operation .

Visual/Physical Inspection

  1. Inspect for aftermarket devices which could affect the operation of the steering system.
  2. Inspect the easily accessible or visible steering components for obvious damage or conditions which could cause the symptom.
  3. Verify the tires are the proper size. Refer to the tire placard on the IP compartment door.
  4. If the tires are not the proper size, replace the tires. Refer to Tire Mounting and Dismounting in Tires and Wheels.

  5. Measure the tire pressure. Adjust the tire pressure if necessary. Refer to the tire placard on the IP compartment door.
  6. Verify the power steering fluid level is correct. Verify the power steering fluid is free from foam or contamination. Refer to Checking and Adding Power Steering Fluid in Power Steering.

Intermittent Conditions

Faulty electrical connections or wiring may be the cause of intermittent conditions. Refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems.

Symptom List

Refer to the following symptom list in order to diagnose the symptom:

    •  Lock System Does Not Unlock
    •  Lock System Does Not Lock
    •  Lock System Sticks in Start
    •  Ignition Key Cannot Be Removed from the Ignition Lock Cylinder
    •  Ignition Key Cannot Turn or Sticks in Any Position
    •  Noise in Steering Column
    •  Steering Column Tilt Function Inoperative
    •  Steering Column Accident Damage Inspection - Off Vehicle