GMPartsGiant.com offers the wholesale prices for genuine 1991 Chevrolet Suburban R1500 parts. Parts like Moldings/Garnish & Roof Trim 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 6.2L Diesel. Model Code: 1/2 TON.