GM Service Manual Online
For 1990-2009 cars only

This relay is used to switch battery voltage to all four of the damper actuators. The relay is located in the trunk compartment micro relay center #4. The high-side of the relay coil is connected to battery voltage through a fuse. The low-side of the relay coil is connected to the Damper High-Side Relay Enable line of the CVRSS control module.