ACDelco Professional New Alternators are manufactured with all new components, and are the high quality replacement ideal for many vehicles on the road today. Key components are lubricated to help ensure improved performance and long life reliability even in the toughest conditions. Alternators have regulators that are computer tested for voltage stability, terminal function, and electronic circuit board integrity. These premium aftermarket replacement components are manufactured to meet your expectations for fit, form, and function. Vehicle Fitment: CadillacEscalade 1999-2000ChevyAstro 1996-1999Blazer 1996-1998CK Pickup 1996-2002Express 1996-2000S-10 Pickup 1996-1997Silverado 2500 2001-2002Silverado 3500 2001-2002Suburban 1996-1999, 2001Tahoe 1996-2000GMCCK Pickup 1996-2002Jimmy 1996-1997Safari 1996-1999Savana 1996-2000Sierra 2500 2001-2002Sierra 3500 2001-2002Sonoma 1996-1997Suburban 1996-1999Yukon 1996-1999, 2001Yukon Denali 2000IsuzuHombre 1997OldsmobileBravada 1996-1997.