PPE 111001800 High Idle Valet Switch | 2001-2002 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

This product allows for the engine idle to be set at 3 predetermined points (between 750 rpm and 1,800 rpm) to facilitate faster engine warm-ups, electrical system charging or even having the A/C or heater working at its optimal capacity. There is a Valet setting as well, which governs the engine so that it reaches a maximum of 2,000 rpm, top speed of 55 mph.