NHTSA recall 07V579000

What's wrong: On certain 4-wheel drive pickup trucks, due to the improper heat treatment of the slip yokes that had been reworked during the manufacturing process, the hardness of the slip yoke may be insufficient.

Why it matters: In this condition, there is a possibility that the yoke may break causing the propeller shaft to separate at the joint and come into contact with the road surface or the fuel tank which could result in a loss of vehicle control or a fuel leak.

The fix: Dealers will inspect the slip yoke and replace the propeller shaft if necessary free of charge. The recall began on January 7, 2008.