Bosch Alternator: Remanufactured, 125 Amps, AL8813X
In stock
$292.99
Listed as compatible with this vehicle by the retailer feed.
Check price2012 GMC Sierra 2500HD Alternators
26 products listed for this model year in the retailer catalog. Check engine and trim details before ordering.
Bosch Alternator: Remanufactured, 160 Amps, AL8555X
In stock
$344.99
Listed as compatible with this vehicle by the retailer feed.
Check price
This site contains affiliate links. We may earn a commission if you buy through them. We do not sell these products or guarantee merchant inventory. Compatibility is listed by the retailer feed for this vehicle; it is not an OEM confirmation. Catalog snapshot: Aug 15, 2026.