Tuff Country 06-23 GMC Sierra 1500 4wd 4in Rear Block & U-Bolt Kit

Tuff Country's block and u-bolts kits are an economical solution to raising the rear end of many trucks and SUVs. Lift blocks are inserted between the factory axle and leaf spring to lift the rear end. Each kit includes lift blocks and extended zinc plated u-bolts, custom fit for the application. 2006-2023 GMC Sierra 1500 4wd-4in. Rear Block/U-Bolt Kit Fitment 2006 Chevrolet Silverado 1500 Hybrid 2006 Chevrolet Silverado 1500 LS 2006 Chevrolet Silverado 1500 LT 2006 Chevrolet Silverado 1500 WT 2006 GMC Sierra 1500 Hybrid 2006 GMC Sierra 1500 SL 2006 GMC Sierra 1500 SLE 2006 GMC Sierra 1500 SLT 2006 GMC Sierra 1500 WT 2007 Chevrolet Silverado 1500 LT 2007 Chevrolet Silverado 1500 LTZ 2007 Chevrolet Silverado 1500 WT 2007 Chevrolet Silverado 1500 Classic Hybrid 2007 Chevrolet Silverado 1500 Classic LS 2007 Chevrolet Silverado 1500 Classic LT 2007 Chevrolet Silverado 1500 Classic WT 2007 GMC Sierra 1500 SLE 2007 GMC Sierra 1500 SLT 2007 GMC Sierra 1500 WT 2007 GMC Sierra 1500 Classic Hybrid 2007 GMC Sierra 1500 Classic SL 2007 GMC Sierra 1500 Classic SLE 2007 GMC Sierra 1500 Classic SLT 2007 GMC Sierra 1500 Classic WT 2008 Chevrolet Silverado 1500 LS 2008 Chevrolet Silverado 1500 LT 2008 Chevrolet Silverado 1500 LTZ 2008 Chevrolet Silverado 1500 WT 2008 GMC Sierra 1500 SL 2008 GMC Sierra 1500 SLE 2008 GMC Sierra 1500 SLT 2008 GMC Sierra 1500 WT 2009 Chevrolet Silverado 1500 Hybrid 2009 Chevrolet Silverado 1500 LS 2009 Chevrolet Silverado 1500 LT 2009 Chevrolet Silverado 1500 LTZ 2009 Chevrolet Silverado 1500 WT 2009 GMC Sierra 1500 Hybrid 2009 GMC Sierra 1500 SL 2009 GMC Sierra 1500 SLE 2009 GMC Sierra 1500 SLT 2009 GMC Sierra 1500 WT 2010 Chevrolet Silverado 1500 Hybrid 2010 Chevrolet Silverado 1500 LS 2010 Chevrolet Silverado 1500 LT 2010 Chevrolet Silverado 1500 LTZ 2010 Chevrolet Silverado 1500 WT 2010 GMC Sierra 1500 Hybrid 2010 GMC Sierra 1500 SL 2010 GMC Sierra 1500 SLE 2010 GMC Sierra 1500 SLT 2010 GMC Sierra 1500 WT 2011 Chevrolet Silverado 1500 Hybrid 2011 Chevrolet Silverado 1500 LS 2011 Chevrolet Silverado 1500 LT 2011 Chevrolet Silverado 1500 LTZ 2011 Chevrolet Silverado 1500 WT 2011 GMC Sierra 1500 Hybrid 2011 GMC Sierra 1500 SL 2011 GMC Sierra 1500 SLE 2011 GMC Sierra 1500 SLT 2011 GMC Sierra 1500 WT 2012 Chevrolet Silverado 1500 Hybrid 2012 Chevrolet Silverado 1500 LS 2012 Chevrolet Silverado 1500 LT 2012 Chevrolet Silverado 1500 LTZ 2012 Chevrolet Silverado 1500 WT 2012 GMC Sierra 1500 Hybrid 2012 GMC Sierra 1500 SL 2012 GMC Sierra 1500 SLE 2012 GMC Sierra 1500 SLT 2012 GMC Sierra 1500 WT 2013 Chevrolet Silverado 1500 Hybrid 2013 Chevrolet Silverado 1500 LS 2013 Chevrolet Silverado 1500 LT 2013 Chevrolet Silverado 1500 LTZ 2013 Chevrolet Silverado 1500 WT 2013 GMC Sierra 1500 Hybrid 2013 GMC Sierra 1500 SL 2013 GMC Sierra 1500 SLE 2013 GMC Sierra 1500 SLT 2013 GMC Sierra 1500 WT 2014 Chevrolet Silverado 1500 High Country 2014 Chevrolet Silverado 1500 LT 2014 Chevrolet Silverado 1500 LTZ 2014 Chevrolet Silverado 1500 WT 2014 GMC Sierra 1500 Base 2014 GMC Sierra 1500 Denali 2014 GMC Sierra 1500 SLE 2014 GMC Sierra 1500 SLT 2015 Chevrolet Silverado 1500 High Country 2015 Chevrolet Silverado 1500 LS 2015 Chevrolet Silverado 1500 LT 2015 Chevrolet Silverado 1500 LTZ 2015 Chevrolet Silverado 1500 SSV 2015 Chevrolet Silverado 1500 WT 2015 GMC Sierra 1500 Base 2015 GMC Sierra 1500 Denali 2015 GMC Sierra 1500 SLE 2015 GMC Sierra 1500 SLT 2016 Chevrolet Silverado 1500 Custom 2016 Chevrolet Silverado 1500 High Country 2016 Chevrolet Silverado 1500 LS 2016 Chevrolet Silverado 1500 LT 2016 Chevrolet Silverado 1500 LTZ 2016 Chevrolet Silverado 1500 SSV 2016 Chevrolet Silverado 1500 WT 2016 GMC Sierra 1500 Base 2016 GMC Sierra 1500 Denali 2016 GMC Sierra 1500 SLE 2016 GMC Sierra 1500 SLT 2017 Chevrolet Silverado 1500 Custom 2017 Chevrolet Silverado 1500 High Country 2017 Chevrolet Silverado 1500 LS 2017 Chevrolet Silverado 1500 LT 2017 Chevrolet Silverado 1500 LTZ 2017 Chevrolet Silverado 1500 SSV 2017 Chevrolet Silverado 1500 WT 2017 GMC Sierra 1500 Base 2017 GMC Sierra 1500 Denali 2017 GMC Sierra 1500 SLE 2017 GMC Sierra 1500 SLT 2018 Chevrolet Silverado 1500 Custom 2018 Chevrolet Silverado 1500 High Country 2018 Chevrolet Silverado 1500 LS 2018 Chevrolet Silverado 1500 LT 2018 Chevrolet Silverado 1500 LTZ 2018 Chevrolet Silverado 1500 SSV 2018 Chevrolet Silverado 1500 WT 2018 GMC Sierra 1500 Base 2018 GMC Sierra 1500 Denali 2018 GMC Sierra 1500 SLE 2018 GMC Sierra 1500 SLT 2019 Chevrolet Silverado 1500 Custom 2019 Chevrolet Silverado 1500 Custom Trail Boss 2019 Chevrolet Silverado 1500 High Country 2019 Chevrolet Silverado 1500 LT 2019 Chevrolet Silverado 1500 LT Trail Boss 2019 Chevrolet Silverado 1500 LTZ 2019 Chevrolet Silverado 1500 RST 2019 Chevrolet Silverado 1500 SSV 2019 Chevrolet Silverado 1500 WT 2020 Chevrolet Silverado 1500 Custom 2020 Chevrolet Silverado 1500 Custom Trail Boss 2020 Chevrolet Silverado 1500 High Country 2020 Chevrolet Silverado 1500 LT 2020 Chevrolet Silverado 1500 LT Trail Boss 2020 Chevrolet Silverado 1500 LTZ 2020 Chevrolet Silverado 1500 RST 2020 Chevrolet Silverado 1500 SSV 2020 Chevrolet Silverado 1500 WT 2021 Chevrolet Silverado 1500 Custom 2021 Chevrolet Silverado 1500 Custom Trail Boss 2021 Chevrolet Silverado 1500 High Country 2021 Chevrolet Silverado 1500 LT 2021 Chevrolet Silverado 1500 LT Trail Boss 2021 Chevrolet Silverado 1500 LTZ 2021 Chevrolet Silverado 1500 RST 2021 Chevrolet Silverado 1500 SSV 2021 Chevrolet Silverado 1500 WT 2022 Chevrolet Silverado 1500 Custom 2022 Chevrolet Silverado 1500 Custom Trail Boss 2022 Chevrolet Silverado 1500 High Country 2022 Chevrolet Silverado 1500 LT 2022 Chevrolet Silverado 1500 LT Trail Boss 2022 Chevrolet Silverado 1500 LTZ 2022 Chevrolet Silverado 1500 RST 2022 Chevrolet Silverado 1500 WT 2022 Chevrolet Silverado 1500 ZR2 2023 Chevrolet Silverado 1500 Custom 2023 Chevrolet Silverado 1500 Custom Trail Boss 2023 Chevrolet Silverado 1500 High Country 2023 Chevrolet Silverado 1500 LT 2023 Chevrolet Silverado 1500 LT Trail Boss 2023 Chevrolet Silverado 1500 LTZ 2023 Chevrolet Silverado 1500 PPV 2023 Chevrolet Silverado 1500 RST 2023 Chevrolet Silverado 1500 WT 2023 Chevrolet Silverado 1500 ZR2