Mishimoto 01-10 Chevy Duramax 2500 6.6L 185 & 191F Degrees Racing Thermostat

The Mishimoto Chevrolet Duramax high temperature thermostats activate at a higher temperature than the OEM thermostats, making them the perfect solution for Duramax owners who live in colder climates, or have trouble reaching operating temperatures.Activating at a higher temperature means the thermostats will allow the coolant to stay in the engine longer delaying the coolant flowing through the radiator, which allows the engine to warm up sooner. Mishimoto Chevrolet/GMC 6.6L Duramax High Temperature Thermostats (set of 2) MMTS-CHV-01DH 2006-2009 Chevrolet Express 2500 6.6 Liter 4L60-E, 2006-2009 Chevrolet Express 2500 6.6 Liter 4L80-E, 2006-2009 Chevrolet Express 2500 6.6 Liter 4L85-E, 2010-2012 Chevrolet Express 2500 6.6 Liter 6L90, 2007-2009 Chevrolet Express 3500 6.6 Liter 4L60-E, 2006-2009 Chevrolet Express 3500 6.6 Liter 4L80-E, 2006-2009 Chevrolet Express 3500 6.6 Liter 4L85-E, 2010-2012 Chevrolet Express 3500 6.6 Liter 6L90, 2009 Chevrolet Express 4500 6.6 Liter 4L60-E, 2009 Chevrolet Express 4500 6.6 Liter 4L80-E, 2009 Chevrolet Express 4500 6.6 Liter 4L85-E, 2010-2012 Chevrolet Express 4500 6.6 Liter 6L90, 2004-2012 Chevrolet Silverado 2500 HD 6.6 Liter 1000, 2001-2003 Chevrolet Silverado 2500 HD 6.6 Liter 1000/M74, 2001-2007 Chevrolet Silverado 2500 HD 6.6 Liter 4L80-E, 2002 Chevrolet Silverado 2500 HD 6.6 Liter 4L80-E-HD/MN8, 2007-2012 Chevrolet Silverado 2500 HD 6.6 Liter 6L90, 2004-2007 Chevrolet Silverado 2500 HD 6.6 Liter NV4500, 2001-2003 Chevrolet Silverado 2500 HD 6.6 Liter NV4500/MW3, 2004-2006 Chevrolet Silverado 2500 HD 6.6 Liter S6-650, 2001-2003 Chevrolet Silverado 2500 HD 6.6 Liter S6-650/ML6, 2004-2007 Chevrolet Silverado 3500 6.6 Liter 1000, 2001-2003 Chevrolet Silverado 3500 6.6 Liter 1000/M74, 2001-2007 Chevrolet Silverado 3500 6.6 Liter 4L80-E, 2004-2007 Chevrolet Silverado 3500 6.6 Liter NV4500, 2001-2003 Chevrolet Silverado 3500 6.6 Liter NV4500/MW3, 2004-2006 Chevrolet Silverado 3500 6.6 Liter S6-650, 2001-2003 Chevrolet Silverado 3500 6.6 Liter S6-650/ML6, 2007-2012 Chevrolet Silverado 3500 HD 6.6 Liter 1000, 2007-2012 Chevrolet Silverado 3500 HD 6.6 Liter 6L90, 2006-2009 GMC Savana 2500 6.6 Liter 4L60-E, 2006-2009 GMC Savana 2500 6.6 Liter 4L80-E, 2006-2009 GMC Savana 2500 6.6 Liter 4L85-E, 2010-2012 GMC Savana 2500 6.6 Liter 6L90, 2006-2009 GMC Savana 3500 6.6 Liter 4L60-E, 2006-2009 GMC Savana 3500 6.6 Liter 4L80-E, 2006-2009 GMC Savana 3500 6.6 Liter 4L85-E, 2010-2012 GMC Savana 3500 6.6 Liter 6L90 ...See Application Guide for Additional Fitments Fitment: Chevrolet Express 2500 Base 2006 Chevrolet Express 2500 Base 2007 Chevrolet Express 2500 Base 2008 Chevrolet Express 2500 Base 2009 Chevrolet Express 2500 Base 2010 Chevrolet Express 2500 Base 2011 Chevrolet Express 2500 Base 2012 Chevrolet Express 2500 Base 2013 Chevrolet Express 2500 Base 2014 Chevrolet Express 2500 Base 2015 Chevrolet Express 2500 Base 2016 Chevrolet Express 2500 LS 2006 Chevrolet Express 2500 LS 2007 Chevrolet Express 2500 LS 2008 Chevrolet Express 2500 LS 2009 Chevrolet Express 2500 LS 2010 Chevrolet Express 2500 LS 2011 Chevrolet Express 2500 LS 2012 Chevrolet Express 2500 LS 2013 Chevrolet Express 2500 LS 2014 Chevrolet Express 2500 LS 2015 Chevrolet Express 2500 LS 2016 Chevrolet Express 2500 LT 2006 Chevrolet Express 2500 LT 2007 Chevrolet Express 2500 LT 2008 Chevrolet Express 2500 LT 2009 Chevrolet Express 2500 LT 2010 Chevrolet Express 2500 LT 2011 Chevrolet Express 2500 LT 2012 Chevrolet Express 2500 LT 2013 Chevrolet Express 2500 LT 2014 Chevrolet Express 2500 LT 2015 Chevrolet Express 2500 LT 2016 Chevrolet Express 3500 Base 2006 Chevrolet Express 3500 Base 2007 Chevrolet Express 3500 Base 2008 Chevrolet Express 3500 Base 2009 Chevrolet Express 3500 Base 2010 Chevrolet Express 3500 Base 2011 Chevrolet Express 3500 Base 2012 Chevrolet Express 3500 Base 2013 Chevrolet Express 3500 Base 2014 Chevrolet Express 3500 Base 2015 Chevrolet Express 3500 Base 2016 Chevrolet Express 3500 LS 2006 Chevrolet Express 3500 LS 2007 Chevrolet Express 3500 LS 2008 Chevrolet Express 3500 LS 2009 Chevrolet Express 3500 LS 2010 Chevrolet Express 3500 LS 2011 Chevrolet Express 3500 LS 2012 Chevrolet Express 3500 LS 2013 Chevrolet Express 3500 LS 2014 Chevrolet Express 3500 LS 2015 Chevrolet Express 3500 LS 2016 Chevrolet Express 3500 LT 2006 Chevrolet Express 3500 LT 2007 Chevrolet Express 3500 LT 2008 Chevrolet Express 3500 LT 2009 Chevrolet Express 3500 LT 2010 Chevrolet Express 3500 LT 2011 Chevrolet Express 3500 LT 2012 Chevrolet Express 3500 LT 2013 Chevrolet Express 3500 LT 2014 Chevrolet Express 3500 LT 2015 Chevrolet Express 3500 LT 2016 Chevrolet Silverado 2500 HD Base 2001 Chevrolet Silverado 2500 HD Base 2002 Chevrolet Silverado 2500 HD Base 2003 Chevrolet Silverado 2500 HD Base 2004 Chevrolet Silverado 2500 HD Base 2005 Chevrolet Silverado 2500 HD Custom 2020 Chevrolet Silverado 2500 HD Custom 2021 Chevrolet Silverado 2500 HD High Country 2015 Chevrolet Silverado 2500 HD High Country 2016 Chevrolet Silverado 2500 HD High Country 2017 Chevrolet Silverado 2500 HD High Country 2018 Chevrolet Silverado 2500 HD High Country 2019 Chevrolet Silverado 2500 HD High Country 2020 Chevrolet Silverado 2500 HD High Country 2021 Chevrolet Silverado 2500 HD LS 2001 Chevrolet Silverado 2500 HD LS 2002 Chevrolet Silverado 2500 HD LS 2003 Chevrolet Silverado 2500 HD LS 2004 Chevrolet Silverado 2500 HD LS 2005 Chevrolet Silverado 2500 HD LS 2006 Chevrolet Silverado 2500 HD LT 2001 Chevrolet Silverado 2500 HD LT 2002 Chevrolet Silverado 2500 HD LT 2003 Chevrolet Silverado 2500 HD LT 2004 Chevrolet Silverado 2500 HD LT 2005 Chevrolet Silverado 2500 HD LT 2006 Chevrolet Silverado 2500 HD LT 2007 Chevrolet Silverado 2500 HD LT 2008 Chevrolet Silverado 2500 HD LT 2009 Chevrolet Silverado 2500 HD LT 2010 Chevrolet Silverado 2500 HD LT 2011 Chevrolet Silverado 2500 HD LT 2012 Chevrolet Silverado 2500 HD LT 2013 Chevrolet Silverado 2500 HD LT 2014 Chevrolet Silverado 2500 HD LT 2015 Chevrolet Silverado 2500 HD LT 2016 Chevrolet Silverado 2500 HD LT 2017 Chevrolet Silverado 2500 HD LT 2018 Chevrolet Silverado 2500 HD LT 2019 Chevrolet Silverado 2500 HD LT 2020 Chevrolet Silverado 2500 HD LT 2021 Chevrolet Silverado 2500 HD LTZ 2007 Chevrolet Silverado 2500 HD LTZ 2008 Chevrolet Silverado 2500 HD LTZ 2009 Chevrolet Silverado 2500 HD LTZ 2010 Chevrolet Silverado 2500 HD LTZ 2011 Chevrolet Silverado 2500 HD LTZ 2012 Chevrolet Silverado 2500 HD LTZ 2013 Chevrolet Silverado 2500 HD LTZ 2014 Chevrolet Silverado 2500 HD LTZ 2015 Chevrolet Silverado 2500 HD LTZ 2016 Chevrolet Silverado 2500 HD LTZ 2017 Chevrolet Silverado 2500 HD LTZ 2018 Chevrolet Silverado 2500 HD LTZ 2019 Chevrolet Silverado 2500 HD LTZ 2020 Chevrolet Silverado 2500 HD LTZ 2021 Chevrolet Silverado 2500 HD WT 2003 Chevrolet Silverado 2500 HD WT 2004 Chevrolet Silverado 2500 HD WT 2005 Chevrolet Silverado 2500 HD WT 2006 Chevrolet Silverado 2500 HD WT 2007 Chevrolet Silverado 2500 HD WT 2008 Chevrolet Silverado 2500 HD WT 2009 Chevrolet Silverado 2500 HD WT 2010 Chevrolet Silverado 2500 HD WT 2011 Chevrolet Silverado 2500 HD WT 2012 Chevrolet Silverado 2500 HD WT 2013 Chevrolet Silverado 2500 HD WT 2014 Chevrolet Silverado 2500 HD WT 2015 Chevrolet Silverado 2500 HD WT 2016 Chevrolet Silverado 2500 HD WT 2017 Chevrolet Silverado 2500 HD WT 2018 Chevrolet Silverado 2500 HD WT 2019 Chevrolet Silverado 2500 HD WT 2020 Chevrolet Silverado 2500 HD WT 2021 Chevrolet Silverado 2500 HD Classic LS 2007 Chevrolet Silverado 2500 HD Classic LT 2007 Chevrolet Silverado 2500 HD Classic WT 2007 Chevrolet Silverado 3500 Base 2001 Chevrolet Silverado 3500 Base 2002 Chevrolet Silverado 3500 Base 2003 Chevrolet Silverado 3500 Base 2004 Chevrolet Silverado 3500 Base 2005 Chevrolet Silverado 3500 LS 2001 Chevrolet Silverado 3500 LS 2002 Chevrolet Silverado 3500 LS 2003 Chevrolet Silverado 3500 LS 2004 Chevrolet Silverado 3500 LS 2005 Chevrolet Silverado 3500 LS 2006 Chevrolet Silverado 3500 LT 2001 Chevrolet Silverado 3500 LT 2002 Chevrolet Silverado 3500 LT 2003 Chevrolet Silverado 3500 LT 2004 Chevrolet Silverado 3500 LT 2005 Chevrolet Silverado 3500 LT 2006 Chevrolet Silverado 3500 WT 2004 Chevrolet Silverado 3500 WT 2006 Chevrolet Silverado 3500 Classic LS 2007 Chevrolet Silverado 3500 Classic LT 2007 Chevrolet Silverado 3500 Classic WT 2007 Chevrolet Silverado 3500 HD High Country 2015 Chevrolet Silverado 3500 HD High Country 2016 Chevrolet Silverado 3500 HD High Country 2017 Chevrolet Silverado 3500 HD High Country 2018 Chevrolet Silverado 3500 HD High Country 2019 Chevrolet Silverado 3500 HD High Country 2020 Chevrolet Silverado 3500 HD High Country 2021 Chevrolet Silverado 3500 HD LT 2007 Chevrolet Silverado 3500 HD LT 2008 Chevrolet Silverado 3500 HD LT 2009 Chevrolet Silverado 3500 HD LT 2010 Chevrolet Silverado 3500 HD LT 2011 Chevrolet Silverado 3500 HD LT 2012 Chevrolet Silverado 3500 HD LT 2013 Chevrolet Silverado 3500 HD LT 2014 Chevrolet Silverado 3500 HD LT 2015 Chevrolet Silverado 3500 HD LT 2016 Chevrolet Silverado 3500 HD LT 2017 Chevrolet Silverado 3500 HD LT 2018 Chevrolet Silverado 3500 HD LT 2019 Chevrolet Silverado 3500 HD LT 2020 Chevrolet Silverado 3500 HD LT 2021 Chevrolet Silverado 3500 HD LTZ 2007 Chevrolet Silverado 3500 HD LTZ 2008 Chevrolet Silverado 3500 HD LTZ 2009 Chevrolet Silverado 3500 HD LTZ 2010 Chevrolet Silverado 3500 HD LTZ 2011 Chevrolet Silverado 3500 HD LTZ 2012 Chevrolet Silverado 3500 HD LTZ 2013 Chevrolet Silverado 3500 HD LTZ 2014 Chevrolet Silverado 3500 HD LTZ 2015 Chevrolet Silverado 3500 HD LTZ 2016 Chevrolet Silverado 3500 HD LTZ 2017 Chevrolet Silverado 3500 HD LTZ 2018 Chevrolet Silverado 3500 HD LTZ 2019 Chevrolet Silverado 3500 HD LTZ 2020 Chevrolet Silverado 3500 HD LTZ 2021 Chevrolet Silverado 3500 HD WT 2007 Chevrolet Silverado 3500 HD WT 2008 Chevrolet Silverado 3500 HD WT 2009 Chevrolet Silverado 3500 HD WT 2010 Chevrolet Silverado 3500 HD WT 2011 Chevrolet Silverado 3500 HD WT 2012 Chevrolet Silverado 3500 HD WT 2013 Chevrolet Silverado 3500 HD WT 2014 Chevrolet Silverado 3500 HD WT 2015 Chevrolet Silverado 3500 HD WT 2016 Chevrolet Silverado 3500 HD WT 2017 Chevrolet Silverado 3500 HD WT 2018 Chevrolet Silverado 3500 HD WT 2019 Chevrolet Silverado 3500 HD WT 2020 Chevrolet Silverado 3500 HD WT 2021 GMC Savana 2500 Base 2006 GMC Savana 2500 Base 2007 GMC Savana 2500 Base 2008 GMC Savana 2500 Base 2009 GMC Savana 2500 Base 2010 GMC Savana 2500 Base 2011 GMC Savana 2500 Base 2012 GMC Savana 2500 Base 2013 GMC Savana 2500 Base 2014 GMC Savana 2500 Base 2015 GMC Savana 2500 Base 2016 GMC Savana 2500 LS 2007 GMC Savana 2500 LS 2008 GMC Savana 2500 LS 2009 GMC Savana 2500 LS 2010 GMC Savana 2500 LS 2011 GMC Savana 2500 LS 2012 GMC Savana 2500 LS 2013 GMC Savana 2500 LS 2014 GMC Savana 2500 LS 2015 GMC Savana 2500 LS 2016 GMC Savana 2500 LT 2007 GMC Savana 2500 LT 2008 GMC Savana 2500 LT 2009 GMC Savana 2500 LT 2010 GMC Savana 2500 LT 2011 GMC Savana 2500 LT 2012 GMC Savana 2500 LT 2013 GMC Savana 2500 LT 2014 GMC Savana 2500 LT 2015 GMC Savana 2500 LT 2016 GMC Savana 3500 Base 2006 GMC Savana 3500 Base 2007 GMC Savana 3500 Base 2008 GMC Savana 3500 Base 2009 GMC Savana 3500 Base 2010 GMC Savana 3500 Base 2011 GMC Savana 3500 Base 2012 GMC Savana 3500 Base 2013 GMC Savana 3500 Base 2014 GMC Savana 3500 Base 2015 GMC Savana 3500 Base 2016 GMC Savana 3500 LS 2006 GMC Savana 3500 LS 2007 GMC Savana 3500 LS 2008 GMC Savana 3500 LS 2009 GMC Savana 3500 LS 2010 GMC Savana 3500 LS 2011 GMC Savana 3500 LS 2012 GMC Savana 3500 LS 2013 GMC Savana 3500 LS 2014 GMC Savana 3500 LS 2015 GMC Savana 3500 LS 2016 GMC Savana 3500 LT 2006 GMC Savana 3500 LT 2007 GMC Savana 3500 LT 2008 GMC Savana 3500 LT 2009 GMC Savana 3500 LT 2010 GMC Savana 3500 LT 2011 GMC Savana 3500 LT 2012 GMC Savana 3500 LT 2013 GMC Savana 3500 LT 2014 GMC Savana 3500 LT 2015 GMC Savana 3500 LT 2016 GMC Sierra 2500 HD Base 2002 GMC Sierra 2500 HD Base 2003 GMC Sierra 2500 HD Base 2004 GMC Sierra 2500 HD Base 2005 GMC Sierra 2500 HD Base 2015 GMC Sierra 2500 HD Base 2016 GMC Sierra 2500 HD Base 2017 GMC Sierra 2500 HD Base 2018 GMC Sierra 2500 HD Base 2019 GMC Sierra 2500 HD Base 2020 GMC Sierra 2500 HD Base 2021 GMC Sierra 2500 HD Denali 2011 GMC Sierra 2500 HD Denali 2012 GMC Sierra 2500 HD Denali 2013 GMC Sierra 2500 HD Denali 2014 GMC Sierra 2500 HD Denali 2015 GMC Sierra 2500 HD Denali 2016 GMC Sierra 2500 HD Denali 2017 GMC Sierra 2500 HD Denali 2018 GMC Sierra 2500 HD Denali 2019 GMC Sierra 2500 HD Denali 2020 GMC Sierra 2500 HD Denali 2021 GMC Sierra 2500 HD SL 2001 GMC Sierra 2500 HD SL 2002 GMC Sierra 2500 HD SL 2006 GMC Sierra 2500 HD SLE 2001 GMC Sierra 2500 HD SLE 2002 GMC Sierra 2500 HD SLE 2003 GMC Sierra 2500 HD SLE 2004 GMC Sierra 2500 HD SLE 2005 GMC Sierra 2500 HD SLE 2006 GMC Sierra 2500 HD SLE 2007 GMC Sierra 2500 HD SLE 2008 GMC Sierra 2500 HD SLE 2009 GMC Sierra 2500 HD SLE 2010 GMC Sierra 2500 HD SLE 2011 GMC Sierra 2500 HD SLE 2012 GMC Sierra 2500 HD SLE 2013 GMC Sierra 2500 HD SLE 2014 GMC Sierra 2500 HD SLE 2015 GMC Sierra 2500 HD SLE 2016 GMC Sierra 2500 HD SLE 2017 GMC Sierra 2500 HD SLE 2018 GMC Sierra 2500 HD SLE 2019 GMC Sierra 2500 HD SLE 2020 GMC Sierra 2500 HD SLE 2021 GMC Sierra 2500 HD SLT 2001 GMC Sierra 2500 HD SLT 2002 GMC Sierra 2500 HD SLT 2003 GMC Sierra 2500 HD SLT 2004 GMC Sierra 2500 HD SLT 2005 GMC Sierra 2500 HD SLT 2006 GMC Sierra 2500 HD SLT 2007 GMC Sierra 2500 HD SLT 2008 GMC Sierra 2500 HD SLT 2009 GMC Sierra 2500 HD SLT 2010 GMC Sierra 2500 HD SLT 2011 GMC Sierra 2500 HD SLT 2012 GMC Sierra 2500 HD SLT 2013 GMC Sierra 2500 HD SLT 2014 GMC Sierra 2500 HD SLT 2015 GMC Sierra 2500 HD SLT 2016 GMC Sierra 2500 HD SLT 2017 GMC Sierra 2500 HD SLT 2018 GMC Sierra 2500 HD SLT 2019 GMC Sierra 2500 HD SLT 2020 GMC Sierra 2500 HD SLT 2021 GMC Sierra 2500 HD WT 2003 GMC Sierra 2500 HD WT 2004 GMC Sierra 2500 HD WT 2005 GMC Sierra 2500 HD WT 2006 GMC Sierra 2500 HD WT 2007 GMC Sierra 2500 HD WT 2008 GMC Sierra 2500 HD WT 2009 GMC Sierra 2500 HD WT 2010 GMC Sierra 2500 HD WT 2011 GMC Sierra 2500 HD WT 2012 GMC Sierra 2500 HD WT 2013 GMC Sierra 2500 HD WT 2014 GMC Sierra 2500 HD Classic SL 2007 GMC Sierra 2500 HD Classic SLE 2007 GMC Sierra 2500 HD Classic SLT 2007 GMC Sierra 2500 HD Classic WT 2007 GMC Sierra 3500 Base 2002 GMC Sierra 3500 Base 2003 GMC Sierra 3500 Base 2004 GMC Sierra 3500 Base 2005 GMC Sierra 3500 SL 2001 GMC Sierra 3500 SL 2002 GMC Sierra 3500 SL 2006 GMC Sierra 3500 SLE 2001 GMC Sierra 3500 SLE 2002 GMC Sierra 3500 SLE 2003 GMC Sierra 3500 SLE 2004 GMC Sierra 3500 SLE 2005 GMC Sierra 3500 SLE 2006 GMC Sierra 3500 SLT 2001 GMC Sierra 3500 SLT 2002 GMC Sierra 3500 SLT 2003 GMC Sierra 3500 SLT 2004 GMC Sierra 3500 SLT 2005 GMC Sierra 3500 SLT 2006 GMC Sierra 3500 WT 2004 GMC Sierra 3500 WT 2005 GMC Sierra 3500 WT 2006 GMC Sierra 3500 Classic SL 2007 GMC Sierra 3500 Classic SLE 2007 GMC Sierra 3500 Classic SLT 2007 GMC Sierra 3500 Classic WT 2007 GMC Sierra 3500 HD Base 2015 GMC Sierra 3500 HD Base 2016 GMC Sierra 3500 HD Base 2017 GMC Sierra 3500 HD Base 2018 GMC Sierra 3500 HD Base 2019 GMC Sierra 3500 HD Base 2020 GMC Sierra 3500 HD Base 2021 GMC Sierra 3500 HD Denali 2011 GMC Sierra 3500 HD Denali 2012 GMC Sierra 3500 HD Denali 2013 GMC Sierra 3500 HD Denali 2014 GMC Sierra 3500 HD Denali 2015 GMC Sierra 3500 HD Denali 2016 GMC Sierra 3500 HD Denali 2017 GMC Sierra 3500 HD Denali 2018 GMC Sierra 3500 HD Denali 2019 GMC Sierra 3500 HD Denali 2020 GMC Sierra 3500 HD Denali 2021 GMC Sierra 3500 HD SLE 2007 GMC Sierra 3500 HD SLE 2008 GMC Sierra 3500 HD SLE 2009 GMC Sierra 3500 HD SLE 2010 GMC Sierra 3500 HD SLE 2011 GMC Sierra 3500 HD SLE 2012 GMC Sierra 3500 HD SLE 2013 GMC Sierra 3500 HD SLE 2014 GMC Sierra 3500 HD SLE 2015 GMC Sierra 3500 HD SLE 2016 GMC Sierra 3500 HD SLE 2017 GMC Sierra 3500 HD SLE 2018 GMC Sierra 3500 HD SLE 2019 GMC Sierra 3500 HD SLE 2020 GMC Sierra 3500 HD SLE 2021 GMC Sierra 3500 HD SLT 2007 GMC Sierra 3500 HD SLT 2008 GMC Sierra 3500 HD SLT 2009 GMC Sierra 3500 HD SLT 2010 GMC Sierra 3500 HD SLT 2011 GMC Sierra 3500 HD SLT 2012 GMC Sierra 3500 HD SLT 2013 GMC Sierra 3500 HD SLT 2014 GMC Sierra 3500 HD SLT 2015 GMC Sierra 3500 HD SLT 2016 GMC Sierra 3500 HD SLT 2017 GMC Sierra 3500 HD SLT 2018 GMC Sierra 3500 HD SLT 2019 GMC Sierra 3500 HD SLT 2020 GMC Sierra 3500 HD SLT 2021 GMC Sierra 3500 HD WT 2007 GMC Sierra 3500 HD WT 2008 GMC Sierra 3500 HD WT 2009 GMC Sierra 3500 HD WT 2010 GMC Sierra 3500 HD WT 2011 GMC Sierra 3500 HD WT 2012 GMC Sierra 3500 HD WT 2013 GMC Sierra 3500 HD WT 2014