I would look into GM part # 15182556 or 15182558 . It's the rear coil spring for the Tahoe/Yukon with Z55 suspension. They share the same shocks so the spring has to be close. In fact, some places online list 15182556 as compatible with the Escalade Z55. If those part numbers are discontinued, I apologize, as multiple online sources said they were still available.
Last edited by alchargo; 09/21/19 07:52 PM.