This Is A GM Belt Tensioner For 2001-2007 Specific GM Vehicles. 2007 Chevrolet Silverado 2500 HD Classic LS, LT, WT 8.1L V8 - Gas. 2006 Chevrolet Silverado 2500 HD LS, LT, WT 8.1L V8 - Gas. 2007 GMC Sierra 2500 HD Classic SL, SLE, SLT, WT 8.1L V8 - Gas.
