GM Service Manual Online
For 1990-2009 cars only

Step

Action

Yes

No

DEFINITION: On a dry, smooth, flat road, the vehicle has a left or right steering force only during acceleration.

1

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

Go to Step 2

Go to Symptoms - Suspension General Diagnosis

2

  1. Drive the vehicle on a straight, smooth, flat road.
  2. Press the accelerator and determine if any additional steering input is required to maintain a straight ahead direction.
  3. Repeat this test with the vehicle traveling in the opposite direction in order to eliminate crosswind effects. Lead/pull caused by unlevel roads and crosswinds are considered normal.

Does the vehicle exhibit torque steer when the accelerator is pressed?

Go to Step 3

System OK

3

  1. Drive the vehicle on a straight, smooth, flat road at 64-97 km/h (40-60 mph).
  2. Remove your foot from the accelerator.
  3. Shift the transmission into NEUTRAL in order to allow the vehicle to coast.
  4. Is any additional steering input required to maintain a straight ahead direction.
  5. Repeat this test with the vehicle traveling in the opposite direction in order to eliminate crosswind effects. Lead/pull caused by unlevel roads and crosswinds are considered normal.

Does the vehicle direction change when the steering wheel is momentarily released?

Go to Vehicle Leads/Pulls

Go to Step 4

4

Inspect the front suspension and powertrain mounts for worn or damaged components and repair as necessary.

Did you find and correct the condition?

Go to Step 6

Go to Step 5

5

Inspect the vehicle trim height. Refer to Trim Height Inspection.

Did you find and correct the condition?

Go to Step 6

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6

Operate the vehicle in order to verify the repair.

Did you correct the condition?

System OK

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