GMPartsGiant.com offers the wholesale prices for genuine 2003 Chevrolet Tracker 2WD parts. Parts like Automatic Transmission Internal Gearing are shipped directly from authorized GM dealers and backed by the manufacturer's warranty. Parts fit for the following vehicle options. Engine: 4 Cyl 2.0L, 6 Cyl 2.5L. Model Code: 4 DOOR, CONVERTIBLE.