Buy 1991 Gmc K2500 Sierra SLE Standard Cab Pickup Fleetside 4.3L Chevrolet V6 A/T Coil Spring Damper. 1 Ton, Suspension, Springs - OEM Gmc Part # 15270578

Spring. Damper. Bumper.
A component (mounted in the center of the Spring) which cushions the Spring as it is compressed. seat. Auxiliary. Coil. Stopper. Vibration.

Coil Spring Damper

Fits Express 1500, Savana 1500

1/2 ton. Type 1, 1/2 ton.
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 1991 GMC K2500 might benefit from replacing the strut springs. Excessive rust can make the springs more prone to failure. Contact your local GMC service department to have your suspension system evaluated.