GM Service Manual Online
For 1990-2009 cars only

Step

Action

Yes

No

DEFINITION: Lead/pull is the deviation of the vehicle from a straight path on a level road with no pressure on the steering wheel. Use the lead/pull correction table in order to verify that improper wheel alignment or worn components are not mistaken for tire lead.

1

Did you review the General Description and perform the necessary inspections?

Go to Step 2

Go to Symptoms - Suspension General Diagnosis

2

Road test the vehicle in order to verify the complaint. Select a smooth level surface to perform the test.

Does the vehicle operate normally?

System OK

Go to Step 3

3

Inspect the tire/wheel assemblies for the following conditions:

    • Correct tire pressure
        Refer to Tire Inflation Pressure Specifications in Maintenance and Lubrication.
    • Correct tire size
        Refer to Vehicle Certification Label in General Information.

Do any of the above conditions apply?

Go to Step 4

Go to Step 5

4

Repair/replace the tire/wheel assemblies as necessary.

Did you complete the repair?

Go to Step 13

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5

Inspect the front/rear suspensions for the following conditions:

    • Vehicle trim height
        Refer to Trim Height Inspection .
    • Excessive wear or loose components
        Refer to Symptoms - Suspension General Diagnosis .
    • Excessive wheel bearing play
        Refer to Wheel Bearings Diagnosis .

Do any of the above conditions apply?

Go to Step 6

Go to Step 7

6

Repair/replace components as necessary.

    • Tighten components to specifications. Refer to Fastener Tightening Specifications in Front Suspension or Fastener Tightening Specifications in Rear Suspension.
    • Adjust or replace the wheel bearings. Refer to the appropriate procedure:
       -  Front Wheel Bearing and Hub Replacement in Front Suspension
       -  Rear Wheel Bearing and Hub Replacement in Rear Suspension

Did you complete the repair?

Go to Step 13

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7

Inspect the brake system for brake drag. Refer to Brakes Drag in Hydraulic Brakes.

Do any of the above conditions apply?

Go to Step 8

Go to Step 9

8

Repair/replace components as necessary.

Did you complete the repair?

Go to Step 13

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9

Inspect the wheel alignment. Refer to Wheel Alignment Measurement in Wheel Alignment.

Is the wheel alignment in specifications?

Go to Step 11

Go to Step 10

10

Adjust alignment to specifications. Refer to Wheel Alignment Measurement in Wheel Alignment.

Did you complete the repair?

Go to Step 13

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11

  1. Cross-switch the front tire/wheel assemblies.
  2. Road test the vehicle on a smooth level surface.

Does the vehicle still lead/pull?

Go to Step 12

System OK

12

Does the vehicle lead/pull in the opposite direction?

Go to Radial Tire Lead/Pull Correction in Tires and Wheels

Go to Step 13

13

Operate the vehicle in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 3