Yukon Grizzly Locker is a mechanical/automatic, speed-sensing locker.

1973-1974 Chevrolet C20 Pickup (Rear); 1973-1974 Chevrolet C30 Pickup (Rear); 1973-1974 Chevrolet K20 Pickup (Rear); 1972-1974 Chevrolet K30 Pickup (Rear); 2009-2015 Chevrolet Express 4500 (Rear); 1991-2002 Chevrolet C3500HD (Rear); 2007 Chevrolet Silverado 2500 HD Classic (Rear); 2002-2006 Chevrolet Avalanche 2500 (Rear); 1975-1987 Chevrolet C20 (Rear); 1973-1986 Chevrolet C20 Suburban (Rear); 1988-2000 Chevrolet C2500 (Rear); 1992-1999 Chevrolet C2500 Suburban (Rear); 1975-1986 Chevrolet C30 (Rear); 1988-2000 Chevrolet C3500 (Rear); 1996-2015 Chevrolet Express 2500 (Rear); 1975-1995 Chevrolet G20 (Rear); 1996-2015 Chevrolet Express 3500 (Rear); 1979-1996 Chevrolet G30 (Rear); 1975-1986 Chevrolet K20 (Rear); 1973-1986 Chevrolet K20 Suburban (Rear); 1988-2000 Chevrolet K2500 (Rear); 1992-1999 Chevrolet K2500 Suburban (Rear); 1977-1986 Chevrolet K30 (Rear); 1988-2000 Chevrolet K3500 (Rear); 1997-1999 Chevrolet P30 (Rear); 1987-1988 Chevrolet R20 (Rear); 1987-1988 Chevrolet R20 Suburban (Rear); 1989-1991 Chevrolet R2500 Suburban (Rear); 1987 Chevrolet R30 (Rear); 1999-2004 Chevrolet Silverado 2500 (Rear); 2001-2015 Chevrolet Silverado 2500 HD (Rear); 2000-2013 Chevrolet Suburban 2500 (Rear); 1987 Chevrolet V20 (Rear); 1987-1988 Chevrolet V20 Suburban (Rear); 1989-1991 Chevrolet V2500 Suburban (Rear); 1987-1988 Chevrolet V30 (Rear); 2007-2013 Chevrolet Silverado 3500 HD (Rear); 1973-1974 GMC C25/C2500 Pickup (Rear); 1973-1974 GMC C25/C2500 Suburban (Rear); 1973-1974 GMC C35/C3500 Pickup (Rear); 1967-1974 GMC K25/K2500 Pickup (Rear); 1973-1974 GMC K25/K2500 Suburban (Rear); 2009-2015 GMC Savana 4500 (Rear); 2001-2002 GMC C3500HD (Rear); 2015 GMC Yukon XL (Rear); 2007 GMC Sierra 2500 HD Classic (Rear); 1979-2000 GMC C2500 (Rear); 1979-1999 GMC C2500 Suburban (Rear); 1979-2000 GMC C3500 (Rear); 1979-2000 GMC K2500 (Rear); 1979-1999 GMC K2500 Suburban (Rear); 1979-2000 GMC K3500 (Rear); 1987 GMC R2500 (Rear);...