Suspension, Brakes and Tires Discussion, 99 deVille, Level Ride won't come down in Item Specific Cadillac Discussion; I have a 99 deVille.
My rear Level Ride shocks are fully pumped up and will not come down.
Jack up the rear and use jackstands. Pull the wheels and check the ride height sensor link on top of the right rear suspension arm. The link sometimes disconnects from either the control arm ball or the sensor itself. If thst's not the problem, disconnect and clean any shock or suspension connectors you may find.
Read the stickys at the top of the main forum pages on how to pull your trouble codes from the DIC......it's all built into the car. You may see a suspension fault code that will give some guidance.