The following serpentine belt diagram is for the 2001-2005 Century, Grand Prix, Impala, Intrigue, Lumina, Monte Carlo, and Regal. This diagram shows all engine sizes and vin numbers.
The following diagram is for the Ford Excursion, expedition and the Lincoln Navigator. The diagram shows with and without AC and every size engine available. 4.6L, 5.4L, and 6.8L engines