Clutch fan. Yukon XL, Suburban. All models. Silverado, sierra. 6.0l. 4.3L, 1999-04. 4.8, 5.3, 6.0 & 6.2L, 3/4 & 1 ton. 5.3, 6.0L 2002-04, 8.1L., without electric cooling fan. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors.
