GMPartsGiant.com offers the wholesale prices for genuine 1994 GMC Yukon parts. Parts like Exhaust System are shipped directly from authorized GM dealers and backed by the manufacturer's warranty. Parts fit for the following vehicle options. Engine: 8 Cyl 5.7L, 8 Cyl 6.5L Diesel. Model Code: CLASSIC 2 DOOR 1/2 TON.