GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Inspect the tires.

Are the tires mismatched or uneven?

--

Go to Road Test in Vibration Diagnosis and Correction

Go to Step 2

2

Inspect the tire inflation pressures.

Are the inflation pressures unequal?

--

Go to Tire and Wheel Specifications Wheel and Tire Specifications in Maintenance and Lubrication

Go to Step 3

3

Inspect the springs.

Are the springs broken or sagging?

--

Go to Suspension Component Inspection in Front Suspension

Go to Step 4

4

Inspect the radial tire lateral force.

Is the radial tire lateral force abnormal?

--

Go to Tire and Wheel Vibration in Vibration Diagnosis and Correction

Go to Step 5

5

Inspect the front and rear wheel alignment.

Is the wheel alignment incorrect?

--

Go to Wheel Alignment in Wheel Alignment

Go to Step 6

6

Inspect the valve and the pinion.

Is the valve or the pinion unbalanced?

--

Go to Steering Column in Steering, Suspension, tire and Wheel Diagnosis

Go to Step 7

7

Inspect the front brakes.

Are the front brakes dragging?

--

Go to Brake Pedal Travel in Hydraulic Brakes

Go to Step 8

8

Inspect the ball joints.

Is high friction evident?

--

Go to Lower Ball Joint Replacement in Front Suspension

Go to Step 9

9

Inspect the strut mounts.

Is high friction evident?

--

Go to Strut Replacement in Front Suspension

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