Loaded trailers and rough back roads put steady strain on older GM brakes, and the Power Stop Z36 Truck & Tow Brake Upgrade Kit K2010-36 is a disc brake upgrade. This kit covers 1999 to 2007 Chevrolet and GMC applications, including the Silverado 1500 and Sierra 1500 (6 lug), Suburban 1500, Tahoe 4WD, Yukon, Yukon Denali, Yukon XL 1500, Avalanche 1500, Astro, and Safari, plus Silverado and Sierra Hybrid models. Many of these listings call for single piston rear calipers, and a few specify rear disc brakes or a non limited slip axle, so the right kit depends on your rear brake setup as much as your model year. Compare your vehicle's year, drivetrain, and rear caliper type with the fitment list below before ordering. Features:• Disc brake upgrade for towing, hauling, and off-road use• Built for single piston rear caliper applications• Adds braking support for heavy trailers and loaded cargo areas• Covers full-size trucks, large SUVs, and mid-size vans• Includes Silverado and Sierra Hybrid fitment• Part of the Z36 Truck & Tow line for work dutySpecs:• Brand: Power Stop• Product Number: K2010-36• Product Type: Disc Brake Kit• Series: Z36• Application: Towing, hauling, off-road• Vehicle Type: Trucks, SUVs, and vans• Model Years: 1999 to 2007• Vehicle Makes: Chevrolet, GMC• Rear Caliper Type: Single piston (where specified)• Wheel Lugs (Silverado and Sierra 1500): 6 lugFits: Fitment varies by rear caliper type, axle type, and drivetrain. Confirm your configuration before ordering.1999 Chevrolet Silverado 1500 and GMC Sierra 15002000 Chevrolet Silverado 1500 and GMC Sierra 15002000-2002 Chevrolet Suburban 1500, 2WD and 4WD, 6 lug, single piston rear calipers2000-2002 Chevrolet Tahoe 4WD, single piston rear calipers (rear disc on 2000)2000-2001 GMC Yukon XL 1500 2WD, single piston rear calipers2002 GMC Yukon XL 1500 2WD, rear disc, without limited slip axle2000-2002 GMC Yukon XL 1500 4WD, without limited slip axle2000-2002 GMC Yukon and Yukon Denali 4WD, single piston rear calipers2001-2004 Chevrolet Silverado 1500 (6 lug), single piston rear calipers2001-2004 GMC Sierra 1500 (6 lug), single piston rear calipers2002 Chevrolet Avalanche 1500, single piston rear caliper, without limited slip axle2003-2005 Chevrolet Astro2003-2005 GMC Safari2005 Chevrolet Silverado 1500 (6 lug) Base, LS, LT, WT, single piston rear calipers2005 GMC Sierra 1500 (6 lug) Base, SLE, SLT, WT, single piston rear calipers2005-2006 Chevrolet Silverado 1500 Hybrid (6 lug)2005-2006 GMC Sierra 1500 Hybrid (6 lug)2007 Chevrolet Silverado 1500 Classic Hybrid (6 lug)2007 GMC Sierra 1500 Classic Hybrid, old body style (6 lug) Silverado & Sierra fit Single piston rear calipers Hybrid trucks covered | PowerStop Power Stop Z36 Truck & Tow Brake Upgrade Kit for Chevrolet & GMC Trucks, SUVs, and Vans