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.

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

Go to Step 2

Go to Symptoms - Suspension General Diagnosis

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

Inspect the tire/wheel assemblies for the following conditions:

Do any of the above conditions apply?

Go to Step 4

Go to Step 5

Repair/replace the tire/wheel assemblies as necessary.

Did you complete the repair?

Go to Step 15

--

Inspect the front/rear suspensions for the following conditions:

Do any of the above conditions apply?

Go to Step 6

Go to Step 7

Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

1. Repair or replace the components as necessary.
2. Tighten the components to specifications. Refer to Fastener Tightening Specifications in Front Suspension or Fastener Tightening Specifications in Rear Suspension.
3. 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 15

--

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

Repair/replace components as necessary.

Did you complete the repair?

Go to Step 15

--

Inspect the steering gear valve for an unbalance.

If this is the cause, steering effort will be very light in the direction of the lead and effort will be heavy in the opposite direction with the vehicle parked on a smooth level surface.

Does the above condition apply?

Go to Step 10

Go to Step 11

Replace the steering gear. Refer to Steering Gear Replacement in Power Steering System.

Did you complete the repair?

Go to Step 15

--

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

Is the wheel alignment in specifications?

Go to Step 13

Go to Step 12

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

Did you complete the repair?

Go to Step 15

--

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 14

System OK

Does the vehicle lead/pull in the opposite direction?

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

Go to Step 15

Operate the vehicle in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 3