SIERRA 1500 PICKUP 21-25 w/o high capacity air cleaner; diesel. SIERRA DENALI 1500 22-25 w/o high capacity air cleaner; diesel. SIERRA DENALI 1500 21 w/o high capacity air cleaner; 3.0L. SILVERADO 1500 PICKUP 22-25 w/o high capacity air cleaner; diesel.
