Adjustment Procedure
- When major components are removed from the vehicle and the vehicle is supported by a hoist, support the vehicle with jack stands at the opposite end from which the components are being removed and strap the vehicle to the hoist.
- When performing work in the engine compartment or under the vehicle, ensure that the hood is fully open, or opened to its secondary latch. When the hood is opened to the secondary latch, the vehicle will disable the remote start features from the key fob and OnStar mobile app. Failure to open the hood, or open the hood to the secondary latch while doing a repair in the engine compartment or under the vehicle can result in inadvertent vehicle starting which could result in personal injury or damage to a vehicle.
- Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
- Remove and discard the lock nut (2). Replace with NEW only.
- Install the NEW lock nut (2).
- Lower the vehicle to the ground.
- Settle the suspension.
- Determine the actual rear suspension toe setting.
- Adjust the rear suspension toe to specification by turning the bolt adjuster (1). For rear suspension toe specifications, Refer to Wheel Alignment Specifications .
- Tighten the NEW lock nut (2). Refer to Adjust Link Replacement
- Verify that the toe is still within specifications. Refer to Wheel Alignment Specifications .
- Readjust if necessary.
To avoid any vehicle damage, serious personal injury or death:
Refer to Safety Glasses Warning .
Do not fully tighten the NEW lock nut (2) at this time.
The weight of the vehicle must be on a level surface and on all four wheels before fully tightening the nut.
The suggested method to settle the rear suspension is with the wheels on the ground, open rear compartment lid and support the lid with a suitable brace. Using your hands press down hard on the rear compartment floor and release a number of times.
The weight of the vehicle must be on a level surface such as an alignment rack and on all four wheels before fully tightening the bolts and nuts that have been partially tightened. Failure to comply with this requirement may adversely affect the ride and handling characteristics of the vehicle.
Do not allow the bolt adjuster (1) to turn while tightening the lock nut (2).