Accessory Drive Belt Idler Pulley. Idler / Tensioner Pulley. 1996 GMC Yukon Engine: 6.5L V8; Grooved Pulley|w/o AC;. 1997 GMC Yukon Engine: 6.5L V8; Grooved Pulley|w/o AC;. Belt Tensioner Pulley. IMPORTANT: To confirm that this part fits your vehicle, enter your vehicles Year, Make, Model, Trim and Engine in the Compatibility Table.