Grand Caravan V6-3.3L VIN R (2005)
Lower Sliding Door Rail: Description and Operation
Rack Access Hole Locations
The door track and rack assembly provides a mating rack gear for the lower drive unit to engage. The track also accepts the lower hinge rollers, which
helps support the weight of the sliding door as well as providing a smooth surface for the hinge rollers to move upon. The lower door track is a
replaceable component.
With the start of a power sliding door open cycle, the door motor drives the flex drive assembly. The flex drive assembly drives the lower drive unit. A
metal drive gear which is part of the lower drive unit, meshes with the door track rack teeth and moves the sliding door into the full open position. The
same operation repeats itself, during a power close cycle only the system rotates in the opposite direction.