Poor Directional Stability

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, 2004 Chevrolet Cab & Chassis Silverado, and 2003 GMC Sierra. However, it is still accessible from the selected car via links, so may be relevant.

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 toStep 2	Go to Symptoms - Suspension General Diagnosis
2	Verify that the directional stability is poor. Does the system operate normally?	System OK	Go toStep 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 toStep 10	Go toStep 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 (RWD)Lower Control Arm Replacement (4WD) in Front Suspension. Ball Joints Refer to Ball Joint Inspection (Lower Ball Joint) Ball Joint Inspection (Upper Ball Joint) . Inner and outer tie rod ends Refer to Rack and Pinion Outer Tie Rod End Replacement or Rack and Pinion Inner Tie Rod Replacement in Power Steering System or Tie Rod Replacement in Steering Linkage (Non-Rack and Pinion) or Rear Wheel Steering Tie Rod End Replacement - Inner or Rear Wheel Steering Tie Rod End Replacement - Outer in Rear Wheel Steering. Did you find and correct the condition?	Go toStep 10	Go toStep 5
5	Inspect the wheel bearing. Refer to Wheel Bearings Diagnosis . Did you find and correct the condition?	Go toStep 10	Go toStep 6
6	Inspect the vehicle trim height. Refer to Trim Height Inspection Procedure . Did you find and correct the condition?	Go toStep 10	Go toStep 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 toStep 10	Go toStep 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 Pitman Shaft Over-Center Preload Adjustment - Off Vehicle in Power Steering. Did you find and correct the condition?	Go toStep 10	Go toStep 9
9	Inspect and adjust the wheel alignment as necessary. Refer to Measuring Wheel Alignment (w/Rear Wheel Steering)Measuring Wheel Alignment (w/o Rear Wheel Steering) in Wheel Alignment. Did you complete the alignment?	Go toStep 10	-
10	Operate the vehicle in order to verify the repair. Did you correct the condition?	System OK	Go toStep 3