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Factory Aluminum Suspension
Aluminum Factory Suspension: Vehicles come with forged aluminum steering knuckles and aluminum upper and lower control arms. This suspension is targeted to 4WD Crew Cabs with 5 foot 8 inch beds and 4WD Regular Cabs with 6 foot 6 inch beds.
As a safe guard to ordering the correct version, you should visually check your vehicle's factory suspension before you order a lift kit. GM may change what trucks they outfit with the Steel or Aluminum component version at anytime!