Power Sliding Door Modules
WARNING: This page is about a different car, the 2007 Pontiac Montana SV6, 2007 Chevrolet Uplander, and 2007 Buick Terraza. However, it is still accessible from the selected car via links, so may be relevant.
The unlatching, opening, and closing of the power sliding door (PSD) is controlled by the power sliding door module (PSDM). There is one module for each sliding door. In order to continuously monitor the position of its respective sliding door, each module interprets and stores information it receives from the position sensors mounted in the associated power sliding door motor/clutch assembly.