GM Service Manual Online
For 1990-2009 cars only

Steering Effort Hard or Too Easy in One or Both Directions EPS

Condition

Action

The battery power is low.

Confirm proper battery voltage.

The intermediate shaft dash seal is binding.

Adjust the dash seal, or replace the intermediate shaft assembly if necessary.

The intermediate shaft joints are loose or worn.

Inspect the joints and the pinch bolts for damage, and replace the intermediate shaft if necessary. Refer to Intermediate Steering Shaft Replacement .

The steering gear is binding.

If necessary, inspect and replace the steering gear. Refer to Steering Gear Replacement .

The upper steering shaft is bent.

If necessary, replace the steering column. Refer to Steering Column Replacement .

The assist mechanism hub gear is misaligned or damaged.

Replace the steering column. Refer to Steering Column Replacement .

The sensor wire is damaged.

Replace the steering column. Refer to Steering Column Replacement .

The controller is malfunctioning.

Confirm the DTC. If necessary, replace the motor/module assembly. Refer to Power Steering Assist Motor Replacement .

The motor shaft is binding.

Confirm the DTC. If necessary, replace the motor/module assembly. Refer to Power Steering Assist Motor Replacement .

Steering Effort Hard or Too Easy in One or Both Directions HPS

Step

Action

Yes

No

1

Did you review the Power Steering System General Description and perform the necessary inspections?

Go to Step 2

Go to Symptoms - Power Steering System

2

Verify that the steering effort is hard or too easy in one or both directions.

Does the system operate normally?

System OK

Go to Step 3

3

Perform the power steering test procedure. Refer to Power Steering System Test .

Did you complete the procedure?

Go to Step 4

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4

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 3