Shop OEM General Motors Part # 12675893 (12732705). Belt. Drive Belt - Repair or Replace A failing drive belt could affect the performance of your vehicle's auxiliary systems, not to

Serpentine Belt

Fits Sierra 2500 HD, Sierra 3500 HD, Silverado

Drive Belt - Repair or Replace
A failing drive belt could affect the performance of your vehicle's auxiliary systems, not to mention a loud squealing sound from under the hood. Consider having having your drive belt inspected or replaced to keep your running at its best.