When installing conventional shock absorbers on GM models equipped with self-leveling rear suspension that uses an electronic compressor, the following procedure should be used:
1) Locate height sensing unit on under body of vehicle approximately above the rear axle. Locate a small link connected to the rear axle trailing arm. The upper end of this link will be connected to the electronic height sensing unit.
2) Unplug electrical wire harness from the height sensing unit. System is now deactivated.
3) Cover exposed electrical connector with tape or other suitable material and secure to underside of vehicle.
4) It is Not necessary to disconnect link to axle trailing arm.