GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2005 🢒 Avalanche - 4WD 🢒 Suspension 🢒 Front Suspension 🢒 Poor Directional Stability

Poor Directional Stability

Step

Action

Yes

No

DEFINITION: Driver is unable to maintain consistent, predictable vehicle driving control in any direction.

1

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

Go to Step 2

Go to Symptoms - Suspension General Diagnosis

2

Verify that the directional stability is poor.

Does the system operate normally?

System OK

Go to Step 3

3

Inspect the front stabilizer for the following conditions:

    •  Stabilizer fasteners for looseness
         Refer to Fastener Tightening Specifications in Front Suspension.
    •  Worn or damaged stabilizer or stabilizer bushings
         Refer to Stabilizer Shaft Replacement in Front Suspension.
    •  Damaged or missing stabilizer links
        Refer to Stabilizer Shaft Link Replacement in Front Suspension.

Did you find and correct the condition?

Go to Step 10

Go to Step 4

4

Inspect the following suspension and steering components for wear or damage:

    •  Control Arms
         Refer to Upper Control Arm Replacement or Lower Control Arm Replacement in Front Suspension.
    •  Ball Joints
        Refer to Ball Joint Inspection .
    • Tie rod ends

Did you find and correct the condition?

Go to Step 10

Go to Step 5

5

Inspect the wheel bearing. Refer to Wheel Bearings Diagnosis .

Did you find and correct the condition?

Go to Step 10

Go to Step 6

6

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

Did you find and correct the condition?

Go to Step 10

Go to Step 7

7

Inspect the steering column for looseness. Refer to Looseness in Steering Column in Steering Wheel and Column.

Did you find and correct the condition?

Go to Step 10

Go to Step 8

8

Inspect the steering gear for the following conditions:

    • Steering gear mounting bolts for looseness
         Refer to Fastener Tightening Specifications in Power Steering.
    • Pitman shaft over-center adjustment
        Refer to Steering Gear Pitman Shaft Over-Center Preload Adjustment - Off Vehicle in Power Steering System.

Did you find and correct the condition?

Go to Step 10

Go to Step 9

9

Inspect and adjust the wheel alignment as necessary. Refer to Wheel Alignment Measurement in Wheel Alignment.

Did you complete the alignment?

Go to Step 10

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10

Operate the vehicle in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 3