GMPartsGiant.com offers the wholesale prices for genuine 2017 GMC Acadia New Model 2WD parts. Parts like Bumper/Rear are shipped directly from authorized GM dealers and backed by the manufacturer's warranty. Parts fit for the following vehicle options. Engine: 4 Cyl 2.5L, 6 Cyl 3.6L. Model Code: DENALI SUV, SLE SUV, SLE2 & ALL TERRAIN SUV, SLT & ALL TERRAIN SUV, SLT2 SUV.