Shop Buick Century Serpentine Belt. 6.6 LITER DIESEL, w/dual alternator, 150/220 amp. Silverado, Sierra Dual, Drive, Alternator - OEM Buick Part # 12645694

Serpentine Belt.
Dual Alternators. Serpentine Belt.

Serpentine Belt

Fits Sierra 2500 HD, Sierra 3500 HD, Silverado

6.6 LITER DIESEL, w/dual alternator, 150/220 amp. Silverado, Sierra; 6.6L; Dual Alternator.
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.