GMPartsGiant.com offers the wholesale prices for genuine 2023 GMC Yukon XL 4WD parts. Parts like Engine Block Heater are shipped directly from authorized GM dealers and backed by the manufacturer's warranty. Parts fit for the following vehicle options. Engine: 6 Cyl 3.0L Diesel, 8 Cyl 5.3L, 8 Cyl 6.2L. Model Code: YUKON XL/DENALI XL/ESCALADE ESV.