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HOMESERVICE MANUALSBUICK2013REGAL TURBO PREMIUM, STANDARD TRANSREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 166 (FRONT SUSPENSION SYSTEM)REPAIR INSTRUCTIONSLOWER CONTROL ARM REPLACEMENT (GNA)
2013 Buick Regal Turbo Premium, Standard Trans

Lower Control Arm Replacement (GNA)

2013 Buick Regal Turbo Premium, Standard TransSECTION Lower Control Arm Replacement (GNA)
WARNING: This page is about a different car, the 2012 Buick Regal. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Lower Control Arm (GNA)
GM2274013Courtesy of GENERAL MOTORS COMPANY
Lower Control Arm Replacement (GNA)

Callout Component Name

Preliminary Procedures

  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
  2. Remove the tire and wheel assembly. Refer to Tire and Wheel Removal and Installation .
1 Steering Knuckle Nut
CAUTION:

Refer to Fastener Caution .

Procedure

  1. Support the knuckle with the proper jack stand.
  2. Using the CH 43631  remover, separate the ball joint from the knuckle.

Tighten 
  • First Pass: 50 N.m (37 lb ft)
  • Final Pass: plus 30 degrees

Special Tools 
CH 43631  Ball Joint Remover
For regional equivalent tools, refer to Special Tools 
2 Steering Knuckle Bolt
Procedure 
Discard the steering knuckle bolt. DO NOT re-use, replace with NEW.
3 Front Lower Control Arm Nut
Procedure 
Discard the nut. DO NOT re-use, replace with NEW.
4 Front Lower Control Arm Front Bolt
Procedure 
Discard the bolt. DO NOT re-use, replace with NEW.
Tighten 
  • First Pass: 100 N.m (74 lb ft)
  • Final Pass: plus 90 degrees
5 Front Lower Control Arm Rear Nut (Qty: 2)
6 Front Lower Control Arm Rear Bolt (Qty: 2)
Procedure 
Remove and discard the bolt. DO NOT re-use, replace with NEW.
Tighten 
  • First Pass: 100 N.m (74 lb ft)
  • Final Pass: plus 75 degrees
7 Front Lower Control Arm
CAUTION:

This component is equipped with torque-to-yield fasteners. Install a NEW torque-to-yield fastener when installing this component. Failure to replace the torque-to-yield fastener could cause damage to the vehicle or component.


Procedure 
Verify the wheel alignment. Refer to Wheel Alignment Specifications .
RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.