Buy OEM 1998 Cadillac Part # 15765071. Coil Spring Insulator (Rear, Upper, Lower). 1/2 TON. 1500 SERIES. All Models. Avalanche, Escalade EXT; Lower. Envoy/Trailblazer; w/o Air

Insulator. Spring.
Coil Spring Insulator. Spare. Coil. Dust cover. Retainer. Seat.

Coil Spring Insulator

1/2 TON. 1500 SERIES. All Models. Avalanche, Escalade EXT; Lower. Envoy/Trailblazer; w/o Air Suspension. Escalade ESV. Escalade ESV; Lower. SSR. Suburban, Yukon XL. Tahoe, Yukon, Escalade. Tahoe, Yukon, Escalade; Lower. W/O AUTO LEVEL CONTROL. Yukon XL, Suburban; Lower.
Suspension Coil Spring - Repair or Replace
Your coil springs are not especially prone to failure, but if they have been cut, clamped, or heated to have the vehicle lowered, your 1998 Cadillac might benefit from replacing the strut springs. Excessive rust can make the springs more prone to failure. Contact your local Cadillac service department to have your suspension system evaluated.