GM 25884699
Shock Absorber, Rear Upper Driver Side

Vehicle lifting with support is the first step before shock absorber and its components replacement. First remove the wheel along with the tire then extract the shock module from the vehicle. Place the shock module inside the spring compressor before marking the upper Control Arm assembly and insulator for reinstallation purposes while ensuring the shock absorber can fully move through the compressed spring coil. Use the spring compressor forcing screw to constrict the coil spring and remove the shock absorber upper retaining nut to disconnect its components from the shock module. By relaxing the compressor forcing screw you can remove the upper mounting plate and coil spring so you can extract the upper Control Arm Bracket assembly, insulator and coil spring from the spring compressor. Install the shock absorber by orienting both the upper Control Arm Bracket alignment pins toward a 90-degree angle from the shock absorber lower mounting holes. Place the coil spring along with the insulator and upper Control Arm Bracket assembly as well as the shock absorber on the spring compressor. Then compress the coil spring by twisting the spring compressor forcing screw. Keep all marks properly aligned during this process. Fasten the shock absorber retaining nut to 25 n.m (18 lb ft) torque level. After removing the shock module from the spring compressor allow its installation onto the vehicle. Reinstall the tire followed by the wheel while ending the vehicle lowering procedure.

Remove the lower mounting bolts for the shock absorber.

Ensure all gas pressure is released to prevent personal injury.