Everything about the Yukon Grizzly Locker is hardcore, its casing and gears, its advanced gear tooth design, and its impact on traction and performance. The Yukon Grizzly Locker is a mechanical positive-locking differential that’s engineered for rock crawling, serious trail running, off-road racing, and drag racing. The unit provides 100% power to both tires, while still allowing for disengagement while negotiating turns. The Yukon Grizzly Locker is a patented design that features innovations that make it tougher than the competition. Its inner clutch teeth have a larger radius at the base, which offers up to 350% greater strength versus back-cut designs. The Grizzly Locker’s larger teeth also resist breakage caused by shock-loading or catastrophic axle failure. It’s a serious piece of mechanical engineering for serious driving conditions.

Vehicle Fitment

Years	Make	Model	Trim
1980–1989	Buick	Electra	Estate Wagon
1980–1989	Buick	Electra	Limited
1980–1989	Buick	Electra	Park Avenue
1989	Buick	Electra	Park Avenue Ultra
1985–1989	Buick	Electra	T-Type
2004–2007	Buick	Rainier	CXL
2004–2005	Buick	Rainier	CXL Plus
1980–1987	Buick	Regal	Base
1982–1983	Buick	Regal	Estate Wagon
1987	Buick	Regal	GNX
1984–1987	Buick	Regal	Grand National
1980–1987	Buick	Regal	Limited
1982	Buick	Regal	Limited Turbo
1980–1982	Buick	Regal	Sport
1983–1986	Buick	Regal	T-Type
2009–2013	Cadillac	Escalade
1999–2000, 2002–2013	Cadillac	Escalade	Base
2010–2013	Cadillac	Escalade	Hybrid Platinum
2011–2013	Cadillac	Escalade	Luxury
2008–2013	Cadillac	Escalade	Platinum
2011–2013	Cadillac	Escalade	Premium
2000	Chevrolet	1500 SUV
2013	Chevrolet	Avalanche	Black Diamond LS
2013	Chevrolet	Avalanche	Black Diamond LT
2013	Chevrolet	Avalanche	Black Diamond LTZ
2007–2012	Chevrolet	Avalanche	LS
2007–2012	Chevrolet	Avalanche	LT
2007–2012	Chevrolet	Avalanche	LTZ
2002–2006	Chevrolet	Avalanche 1500
2002–2005	Chevrolet	Avalanche 1500	Base
2005–2006	Chevrolet	Avalanche 1500	LS
2005–2006	Chevrolet	Avalanche 1500	LT
2002–2003	Chevrolet	Avalanche 1500	North Face
2002–2003	Chevrolet	Avalanche 1500	ON Road Edition
2003	Chevrolet	Avalanche 1500	WBH
1994	Chevrolet	Blazer	Base
1992–1993	Chevrolet	Blazer	Cheyenne
1987	Chevrolet	Blazer	Custom Deluxe
1988–1991	Chevrolet	Blazer	Scottsdale
1987–1994	Chevrolet	Blazer	Silverado
1994	Chevrolet	Blazer	Silverado Sport
1980	Chevrolet	C10	BIG TEN
1980–1981	Chevrolet	C10	Cheyenne
1981–1986	Chevrolet	C10	Custom
1980	Chevrolet	C10	Custom Deluxe
1981	Chevrolet	C10	Deluxe
1980–1986	Chevrolet	C10	Scottsdale
1980–1986	Chevrolet	C10	Silverado
1981–1986	Chevrolet	C10 Suburban	Custom
1980	Chevrolet	C10 Suburban	Custom Deluxe
1981	Chevrolet	C10 Suburban	Deluxe
1980, 1982, 1984–1986	Chevrolet	C10 Suburban	Scottsdale
1980, 1982–1986	Chevrolet	C10 Suburban	Silverado
1990–1993	Chevrolet	C1500	454 SS
1994–1997	Chevrolet	C1500	Base
1988–1998	Chevrolet	C1500	Cheyenne
1999	Chevrolet	C1500	LS
1988–1992	Chevrolet	C1500	Scottsdale
1988–1998	Chevrolet	C1500	Silverado
1990–1998	Chevrolet	C1500	WT
1992–1999	Chevrolet	C1500 Suburban	Base
1995–1999	Chevrolet	C1500 Suburban	LS
1995–1997, 1999	Chevrolet	C1500 Suburban	LT
1992–1994	Chevrolet	C1500 Suburban	Silverado
1994–1997, 1999–2000	Chevrolet	C2500	Base
1989–1998	Chevrolet	C2500	Cheyenne
1999–2000	Chevrolet	C2500	LS
1989–1992	Chevrolet	C2500	Scottsdale
1989–1998	Chevrolet	C2500	Silverado
1994–1995, 1998	Chevrolet	C2500	WT
1980–1981	Chevrolet	Camaro
1980	Chevrolet	Camaro	Base
1980–1981	Chevrolet	Camaro	Berlinetta
1980	Chevrolet	Camaro	Rally Sport
1981	Chevrolet	Camaro	Sport
1986–1992	Chevrolet	Caprice	Base
1980–1996	Chevrolet	Caprice	Classic
1986–1990	Chevrolet	Caprice	Classic Brougham
1981–1982	Chevrolet	Caprice	Classic Estate
1980–1981	Chevrolet	Caprice	Classic Landau
1993–1994	Chevrolet	Caprice	Classic LS
1987–1990	Chevrolet	Caprice	Classic LS Brougham
1991–1993	Chevrolet	Caprice	Classic LTZ
1980	Chevrolet	Caprice	Classic Sport
2004–2005	Chevrolet	Colorado
2004	Chevrolet	Colorado	Base
2004, 2006–2008	Chevrolet	Colorado	LS
2006–2012	Chevrolet	Colorado	LT
2004–2005	Chevrolet	Colorado	Sport
2004–2005	Chevrolet	Colorado	Sport LS
2006–2012	Chevrolet	Colorado	WT
2004–2005	Chevrolet	Colorado	Z71 LS
2004–2005	Chevrolet	Colorado	Z85 LS
1996–2014	Chevrolet	Express 1500	Base
1996–2014	Chevrolet	Express 1500	LS
2001–2002, 2006–2014	Chevrolet	Express 1500	LT
1983	Chevrolet	G10	Base
1980–1995	Chevrolet	G10	Beauville
1981–1984, 1986–1987	Chevrolet	G10	Bonaventure
1980–1995	Chevrolet	G10	Chevy VAN
1980–1995	Chevrolet	G10	Sportvan
1980–1995	Chevrolet	G20	Beauville
1983–1984	Chevrolet	G20	Bonaventure
1980–1995	Chevrolet	G20	Chevy VAN
1980–1981	Chevrolet	G20	Nomad
1980–1995	Chevrolet	G20	Sportvan
1981–1982	Chevrolet	Impala
1980–1985	Chevrolet	Impala	Base
1980	Chevrolet	Impala	Sport
1994–1996	Chevrolet	Impala	SS
1980–1981	Chevrolet	K10	Cheyenne
1981–1986	Chevrolet	K10	Custom
1980	Chevrolet	K10	Custom Deluxe
1981	Chevrolet	K10	Deluxe
1980–1986	Chevrolet	K10	Scottsdale
1980–1986	Chevrolet	K10	Silverado
1981–1986	Chevrolet	K10 Suburban	Custom
1980	Chevrolet	K10 Suburban	Custom Deluxe
1981	Chevrolet	K10 Suburban	Deluxe
1980, 1982, 1984–1986	Chevrolet	K10 Suburban	Scottsdale
1980, 1982–1983, 1985–1986	Chevrolet	K10 Suburban	Silverado
1994–1997	Chevrolet	K1500	Base
1988–1998	Chevrolet	K1500	Cheyenne
1999	Chevrolet	K1500	LS
1988–1992	Chevrolet	K1500	Scottsdale
1988–1998	Chevrolet	K1500	Silverado
1991	Chevrolet	K1500	Sport
1990–1998	Chevrolet	K1500	WT
1992–1999	Chevrolet	K1500 Suburban	Base
1995–1999	Chevrolet	K1500 Suburban	LS
1995–1997, 1999	Chevrolet	K1500 Suburban	LT
1992–1994	Chevrolet	K1500 Suburban	Silverado
1980–1981	Chevrolet	K20	Cheyenne
1981–1986	Chevrolet	K20	Custom
1980	Chevrolet	K20	Custom Deluxe
1981	Chevrolet	K20	Deluxe
1980–1986	Chevrolet	K20	Scottsdale
1980–1983, 1985–1986	Chevrolet	K20	Silverado
1981–1986	Chevrolet	K20 Suburban	Custom
1980	Chevrolet	K20 Suburban	Custom Deluxe
1981	Chevrolet	K20 Suburban	Deluxe
1980, 1982, 1984–1986	Chevrolet	K20 Suburban	Scottsdale
1980, 1982–1983, 1985–1986	Chevrolet	K20 Suburban	Silverado
1980	Chevrolet	K5 Blazer	Cheyenne
1981–1986	Chevrolet	K5 Blazer	Custom
1980	Chevrolet	K5 Blazer	Custom Deluxe
1981	Chevrolet	K5 Blazer	Deluxe
1984	Chevrolet	K5 Blazer	Scottsdale
1980–1986	Chevrolet	K5 Blazer	Silverado
1980	Chevrolet	Malibu
1980–1981	Chevrolet	Malibu	Base
1980–1983	Chevrolet	Malibu	Classic
1980	Chevrolet	Malibu	Classic Estate
1980–1981	Chevrolet	Malibu	Classic Landau
1980	Chevrolet	Malibu	Classic Sport
1980	Chevrolet	Malibu	Sport
1995–1996	Chevrolet	Monte Carlo
1981–1988	Chevrolet	Monte Carlo	Base
1983	Chevrolet	Monte Carlo	CL
1980–1981	Chevrolet	Monte Carlo	Landau
1986–1988, 1995–1996	Chevrolet	Monte Carlo	LS
1980	Chevrolet	Monte Carlo	Sport
1983–1988	Chevrolet	Monte Carlo	SS
1987	Chevrolet	R10	Custom Deluxe
1987	Chevrolet	R10	Scottsdale
1987	Chevrolet	R10	Silverado
1987	Chevrolet	R10 Suburban	Custom Deluxe
1987–1988	Chevrolet	R10 Suburban	Scottsdale
1987–1988	Chevrolet	R10 Suburban	Silverado
1989–1991	Chevrolet	R1500 Suburban	Scottsdale
1989–1991	Chevrolet	R1500 Suburban	Silverado
1994–2004	Chevrolet	S10
1994–2003	Chevrolet	S10	Base
1994–2004	Chevrolet	S10	LS
1994–1998	Chevrolet	S10	SS
1999–2003	Chevrolet	S10	Xtreme
2004–2006, 2009–2013	Chevrolet	Silverado 1500
1999–2005	Chevrolet	Silverado 1500	Base
2016–2017	Chevrolet	Silverado 1500	Custom
2014–2017	Chevrolet	Silverado 1500	High Country
1999–2013, 2015–2017	Chevrolet	Silverado 1500	LS
1999–2017	Chevrolet	Silverado 1500	LT
2007–2017	Chevrolet	Silverado 1500	LTZ
2005–2006	Chevrolet	Silverado 1500	SS
2015–2017	Chevrolet	Silverado 1500	SSV
2002–2017	Chevrolet	Silverado 1500	WT
2010–2013	Chevrolet	Silverado 1500	XFE
2005	Chevrolet	Silverado 1500	Z71 OFF-Road
2003–2006	Chevrolet	SSR	Base
2002–2007	Chevrolet	Suburban 1500
2000–2001, 2006	Chevrolet	Suburban 1500	Base
2000–2014	Chevrolet	Suburban 1500	LS
2000–2014	Chevrolet	Suburban 1500	LT
2007–2014	Chevrolet	Suburban 1500	LTZ
2000, 2002–2006, 2008–2013	Chevrolet	Tahoe
1995–2001, 2006	Chevrolet	Tahoe	Base
2000	Chevrolet	Tahoe	Limited
1995–2017	Chevrolet	Tahoe	LS
1995–2017	Chevrolet	Tahoe	LT
2007–2016	Chevrolet	Tahoe	LTZ
2007–2017	Chevrolet	Tahoe	PPV
2017	Chevrolet	Tahoe	Premier
2012–2017	Chevrolet	Tahoe	SSV
2008	Chevrolet	Trailblazer	Base
2002–2007	Chevrolet	Trailblazer	LS
2002–2009	Chevrolet	Trailblazer	LT
2002–2003	Chevrolet	Trailblazer	LTZ
2002–2004	Chevrolet	Trailblazer	North Face
2006–2009	Chevrolet	Trailblazer	SS
1987	Chevrolet	V10	Custom Deluxe
1987	Chevrolet	V10	Scottsdale
1987	Chevrolet	V10	Silverado
1987	Chevrolet	V10 Suburban	Custom Deluxe
1987–1988	Chevrolet	V10 Suburban	Scottsdale
1987–1988	Chevrolet	V10 Suburban	Silverado
1989–1991	Chevrolet	V1500 Suburban	Scottsdale
1989–1991	Chevrolet	V1500 Suburban	Silverado
1987	Chevrolet	V20	Custom Deluxe
1987	Chevrolet	V20	Scottsdale
1987	Chevrolet	V20	Silverado
1987	Chevrolet	V20 Suburban	Custom Deluxe
1987–1988	Chevrolet	V20 Suburban	Scottsdale
1987–1988	Chevrolet	V20 Suburban	Silverado
1989–1991	Chevrolet	V2500 Suburban	Scottsdale
1989–1991	Chevrolet	V2500 Suburban	Silverado
1980–1986	GMC	C1500	Base
1980	GMC	C1500	Heavy Half
1980–1986	GMC	C1500	High Sierra
1988–1993	GMC	C1500	Sierra
1980–1986	GMC	C1500	Sierra Classic
1980–1982	GMC	C1500	Sierra Grande
1997	GMC	C1500	Sierra GT
1994–1999	GMC	C1500	Sierra SL
1988–1999	GMC	C1500	Sierra SLE
1994–1999	GMC	C1500	Sierra SLT
1988–1993	GMC	C1500	Sierra SLX
1994–1998	GMC	C1500	Sierra Special
1980–1982	GMC	C1500	Street Coupe
1980–1986, 1992–1999	GMC	C1500 Suburban	Base
1980–1986	GMC	C1500 Suburban	High Sierra
1980–1986	GMC	C1500 Suburban	Sierra Classic
1980–1982	GMC	C1500 Suburban	Sierra Grande
1992–1999	GMC	C1500 Suburban	SLE
1995–1999	GMC	C1500 Suburban	SLT
1997–2000	GMC	C2500	Sierra SL
1997–2000	GMC	C2500	Sierra SLE
1997–2000	GMC	C2500	Sierra SLT
2004, 2006–2008	GMC	Canyon	SL
2004, 2006–2012	GMC	Canyon	SLE
2006–2012	GMC	Canyon	SLT
2006–2012	GMC	Canyon	WT
2004–2005	GMC	Canyon	Z71 Fleet
2004–2005	GMC	Canyon	Z71 SL
2004–2005	GMC	Canyon	Z71 SLE
2004–2005	GMC	Canyon	Z85 SL
2004–2005	GMC	Canyon	Z85 SLE
2005–2009	GMC	Envoy	Denali
2002–2009	GMC	Envoy	SLE
2002–2009	GMC	Envoy	SLT
1980–1995	GMC	G1500	Rally
1983–1984	GMC	G1500	Rally Custom
1980–1995	GMC	G1500	Rally STX
1980–1995	GMC	G1500	Vandura
1980–1995	GMC	G2500	Rally
1983–1984	GMC	G2500	Rally Custom
1980–1995	GMC	G2500	Rally STX
1980–1995	GMC	G2500	Vandura
1980–1986	GMC	K1500	Base
1980–1986	GMC	K1500	High Sierra
1988–1993	GMC	K1500	Sierra
1980–1986	GMC	K1500	Sierra Classic
1980–1982	GMC	K1500	Sierra Grande
1994–1999	GMC	K1500	Sierra SL
1988–1999	GMC	K1500	Sierra SLE
1995	GMC	K1500	Sierra SLS
1994–1999	GMC	K1500	Sierra SLT
1988–1993	GMC	K1500	Sierra SLX
1994–1998	GMC	K1500	Sierra Special
1993	GMC	K1500	Sierra Sport
1980–1985, 1992–1999	GMC	K1500 Suburban	Base
1980–1985	GMC	K1500 Suburban	High Sierra
1980–1985	GMC	K1500 Suburban	Sierra Classic
1980–1982	GMC	K1500 Suburban	Sierra Grande
1992–1999	GMC	K1500 Suburban	SLE
1995–1999	GMC	K1500 Suburban	SLT
1980–1986	GMC	K2500	Base
1980–1986	GMC	K2500	High Sierra
1980–1986	GMC	K2500	Sierra Classic
1980–1982	GMC	K2500	Sierra Grande
1980–1986	GMC	K2500 Suburban	Base
1980–1986	GMC	K2500 Suburban	High Sierra
1980–1986	GMC	K2500 Suburban	Sierra Classic
1980–1982	GMC	K2500 Suburban	Sierra Grande
1987	GMC	R1500	Base
1987	GMC	R1500	High Sierra
1987	GMC	R1500	Sierra Classic
1987–1991	GMC	R1500 Suburban	Base
1987	GMC	R1500 Suburban	High Sierra
1987–1989	GMC	R1500 Suburban	Sierra Classic
1990	GMC	R1500 Suburban	SLE
1996–2014	GMC	Savana 1500	Base
2006–2014	GMC	Savana 1500	LS
2006–2014	GMC	Savana 1500	LT
1996–2000, 2003–2005	GMC	Savana 1500	SLE
2001–2002	GMC	Savana 1500	SLT
1996–1998	GMC	Savana 2500	Base
1996–1998	GMC	Savana 2500	SLE
2005–2006, 2009–2013	GMC	Sierra 1500
2002–2005, 2014–2017	GMC	Sierra 1500	Base
2007–2017	GMC	Sierra 1500	Denali
2002	GMC	Sierra 1500	HT
1999–2003, 2006–2013	GMC	Sierra 1500	SL
1999–2017	GMC	Sierra 1500	SLE
1999–2017	GMC	Sierra 1500	SLT
2002–2013	GMC	Sierra 1500	WT
2010–2013	GMC	Sierra 1500	XFE
1994–2004	GMC	Sonoma	SL
1994–2001	GMC	Sonoma	SLE
1994–2004	GMC	Sonoma	SLS
1992–1993	GMC	Typhoon	Base
1987	GMC	V1500	Base
1987	GMC	V1500	High Sierra
1987	GMC	V1500	Sierra Classic
1987–1991	GMC	V1500 Suburban	Base
1987	GMC	V1500 Suburban	High Sierra
1987–1989	GMC	V1500 Suburban	Sierra Classic
1990	GMC	V1500 Suburban	SLE
1987	GMC	V2500	Base
1987	GMC	V2500	High Sierra
1987	GMC	V2500	Sierra Classic
1987–1991	GMC	V2500 Suburban	Base
1987	GMC	V2500 Suburban	High Sierra
1987–1989	GMC	V2500 Suburban	Sierra Classic
1990	GMC	V2500 Suburban	SLE
2008–2013	GMC	Yukon
1992–1995	GMC	Yukon	Base
1999–2000, 2008–2013	GMC	Yukon	Denali
2010–2013	GMC	Yukon	Denali Hybrid
1993	GMC	Yukon	GT
1996–1997, 2006	GMC	Yukon	SL
1992–2013	GMC	Yukon	SLE
1995–2013	GMC	Yukon	SLT
1992, 1994	GMC	Yukon	Sport
2008–2014	GMC	Yukon XL 1500	Denali
2006	GMC	Yukon XL 1500	SL
2000–2014	GMC	Yukon XL 1500	SLE
2000–2014	GMC	Yukon XL 1500	SLT
2008–2009	Hummer	H3	Adventure
2008–2010	Hummer	H3	Alpha
2006–2010	Hummer	H3	Base
2009	Hummer	H3	Championship Series
2008–2009	Hummer	H3	Luxury
2007–2009	Hummer	H3	X
2003, 2006	Isuzu	Ascender	Base
2003–2005	Isuzu	Ascender	Limited
2003–2006	Isuzu	Ascender	LS
2004–2005, 2007–2008	Isuzu	Ascender	S
1987	Oldsmobile	Cutlass Supreme	442
1985–1987	Oldsmobile	Cutlass Supreme	Base
1985–1987	Oldsmobile	Cutlass Supreme	Brougham
1985	Oldsmobile	Cutlass Supreme	LS
1980–1986	Pontiac	Bonneville	Base
1980–1986	Pontiac	Bonneville	Brougham
1984–1986	Pontiac	Bonneville	LE
1980–1981	Pontiac	Bonneville	Safari
1980–1981	Pontiac	Catalina	Base
1980–1981	Pontiac	Catalina	Safari
1980–1981	Pontiac	Firebird	Base
1980–1981	Pontiac	Firebird	Esprit
1980–1981	Pontiac	Firebird	Formula
1980–1981	Pontiac	Firebird	Trans AM
1980–1987	Pontiac	Grand Prix	Base
1981–1987	Pontiac	Grand Prix	Brougham
1984–1987	Pontiac	Grand Prix	LE
1980–1983	Pontiac	Grand Prix	LJ
1980	Pontiac	Grand Prix	SJ
1980–1981	Pontiac	Lemans	Base
1980–1981	Pontiac	Lemans	Safari
2006–2009	Saab	9-7X
2008–2009	Saab	9-7X	Aero
2005	Saab	9-7X	ARC
2005	Saab	9-7X	Linear