GMPartsGiant.com offers the wholesale prices for genuine 2020 GMC Canyon 2WD Crew Cab Denali parts. Parts like Automatic Transmission Output Shaft Assembly 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, 4 Cyl 2.8L Diesel, 6 Cyl 3.6L. Model Code: CREW CAB SLT - 6'2" BOX, SLT CREW CAB - 5'2" BOX.