Control Valve Assembly: Notes
WARNING: This page does not describe the selected car, but rather 124 other vehicles, including the 1991 Chevrolet Pickup, 1991 Chevrolet Cab & Chassis, 1988 GMC Vandura Special, 1988 GMC Vandura, and 1988 GMC Value Van. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
As each valve is removed, place parts in order for reassembly reference. Valves and springs are not interchangeable. All components must be laid out on a clean surface in exact sequence as they were removed