I need some help. I'm the proud owner of a black, 2000 Silverado Z71, with the 5.3L, auto trans, push button 4x4, 4 door cab and tons of other extras. My issue: a squeak/squeal I cannot resolve. I've replaced the serpentine 3 times. The direct drive twice. Refurbed the alt. Replaced an idler pully. Replaced the power steering pump. I'm at a loss. Any ideas?