Shop OEM GENERAL MOTORS Part # 25965051 (15278386). Leaf Spring Assembly (Rear). Suspension Leaf Spring - Repair or Replace Your leaf springs are not especially prone to failure, but

Leaf Spring Assembly.
A complete Leaf Spring Assembly containing the master Leaf Spring and graduated Leaf Springs.

Leaf Spring

Fits H3

Suspension Leaf Spring - Repair or Replace
Your leaf springs are not especially prone to failure, but excessive rust can make them more prone to failure. Contact your local service department to have the suspension system in your evaluated and have the leaf springs replaced if necessary.