GMPartsGiant.com offers the wholesale prices for genuine 2020 Chevrolet Traverse AWD parts. Parts like Wiring Harness/Engine are shipped directly from authorized GM dealers and backed by the manufacturer's warranty. Parts fit for the following vehicle options. Engine: 6 Cyl 3.6L. Model Code: LS EXTENDED 4 DOOR SUV, LT EXTENDED 4 DOOR SUV, LTZ EXTENDED 4 DOOR SUV.