Shop OEM General Motors Part # 12656797. Serpentine Belt. 6.6 LITER DIESEL, w/o dual alternator. Silverado, Sierra; 6.6L; Single Alternator. Drive Belt - Repair or Replace A

Serpentine Belt.
Serpentine Belt. Single Alternator.

Serpentine Belt

Fits Sierra 2500 HD, Sierra 3500 HD, Silverado

6.6 LITER DIESEL, w/o dual alternator. Silverado, Sierra; 6.6L; Single 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.