Loosen the front wheel lug nuts, raise the front of the vehicle, and support it securely on jackstands before removing the wheels. Support the axle assembly with either a floor jack under the differential or, preferably, two jacks at each end of the axle for better balance. Unbolt the stabilizer bar end links and the shock absorbers at the front axle housing. Slowly lower the axle assembly until the coil springs are almost fully extended, having an assistant support the right side if using only one jack. Install the spring compressor tool and compress the coil spring enough for removal, ensuring to keep the ends of the spring pointing away from your body. Check the spring for deep nicks and corrosion, replacing it if any questionable conditions are evident. Reinstall the spring compressor tool and compress the new coil spring, guiding the upper end into place and aligning the lower end with the stop in the lower spring seat. The remainder of the installation follows the reverse order of removal, tightening all fasteners to the specified torque. For the rear, loosen the front wheel lug nuts, raise the rear of the vehicle, and support it securely on jackstands before removing the wheels. Support the axle assembly similarly as before and unbolt the stabilizer bar brackets and shock absorbers at the rear axle housing. Remove the lower bolt from the rear track bar and position it out of the way. Slowly lower the axle assembly until the coil springs are fully extended, then grasp the lower end of the spring to remove it from the vehicle, taking care not to damage the rear brake hose. Check the spring for deep nicks and corrosion, replacing it if necessary. Installation is the reverse of removal, ensuring the coil spring is properly seated and tightening all fasteners to the specified torque.