GMPartsGiant.com offers the wholesale prices for genuine 2015 Chevrolet Sonic Hatchback parts. Parts like Transmission To Engine Mounting are shipped directly from authorized GM dealers and backed by the manufacturer's warranty. Parts fit for the following vehicle options. Engine: 4 Cyl 1.4L, 4 Cyl 1.8L. Model Code: LS 5 DOOR HATCHBACK, LT 5 DOOR HATCHBACK, LTZ 5 DOOR HATCHBACK, RS 5 DOOR HATCHBACK.