I bought an "03 Tahoe ST with air ride suspension. The electronic auto ride was disabled but the rear air shocks are still in place with air tubes connected to air compressor. Told them I didn't want air shocks. I am going to be towing a camp trailer. I saw video strut masters and they show the coil springs will have to be replaced with new shocks. Left air shock is leaking oil. Any recommendations would really be appreciated.