Loosen the wheel lug nuts, raise the vehicle, and support it securely on jackstands. Apply the parking brake and remove the wheel. Support the axle with a floor jack positioned nearest the shock absorber to be replaced. Remove the upper shock absorber nut(s) or bolts, using an open end wrench to keep the stem from turning on stud-mounted shock absorbers. If the nut won't loosen due to rust, apply penetrating oil to the stud threads and allow it to soak. It may be necessary to use locking pliers to prevent the stud from turning, as the flats for a wrench are small. Remove the lower shock mounting fastener(s) and pull the shock absorber out from the wheel well. Follow any specific mounting instructions supplied with the new shock absorbers. If replacing old shocks with gas-filled ones, do not cut the retaining strap on the new shock until the top has been firmly mounted. Move the shock absorber back-and-forth to ensure the grommets are centered in the mount, then tighten the stem nut to the specified torque and guide the lower end into position while releasing the retaining strap. Install the lower mounting fasteners and tighten them to the specified torque. Finally, install the wheel and lug nuts, lower the vehicle, and tighten the lug nuts to the specified torque.