Compatible with GMC: Canyon 5.3L 2009-2012; Savana 1500 2009-2014; Sierra 1500 SLE/SLT/ WT/XFE, FLEX 2010-2013; Sierra 2500 HD SLE/SLT/WT, GAS 2009-2014; Sierra 2500 HD (submodel: SLE, SLT, WT), FLEX 2010-2014; Sierra 2500 HD (submodel: SLE, SLT, WT), CNG 2013-2014; Sierra 2500 HD (submodel: Base, Denali, SLE, SLT) 2017-2019; Sierra 2500 HD Base CNG/FLEX/GAS, Denali FLEX/GAS 2015-2016; Sierra 2500/3500 HD Denali, FLEX 2011-2014; Yukon XL 1500 5.3L/6.0L/6.2L 2009-2013
Improve Engine Performance: Accurately maintain belt tension, prevent skidding, abnormal noise or breakage, avoid damage to key components, and improve driving safety and engine stability