W/145A. Alt.
Installation Tool Required
W/105A. Alt.
Tensioner Replacement is Recommended
Installation Tool Required
Installation Tool Required
Tensioner Replacement is Recommended
Tensioner Replacement is Recommended
3mm Zip Tie Required for Installation
(105A Alternator)
(145A Alternator)
Stretch Belt (If a stretch belt is removed for any reason, it must be replaced).
Stretch Belt (If a stretch belt is removed for any reason, it must be replaced).
Tensioner Replacement is Recommended
Browse our selection of quality serpentine belt parts designed specifically for your GMC Sierra. We carry options across multiple trim levels, body styles, and engine configurations to ensure a perfect fit.
AT4 · AT4 CarbonPro · All Terrain · Base · Denali · Denali Ultimate · Regular · SLE · SLT
Crew Cab Pickup · Standard Cab Pickup
V8 5.3L · V8 6.2L
Automatic