The Trade Motion catalog used by gmpartshouse and other on-line suppliers is a great help, but omits a lot of the little bits. Does anyone know of a source for a more detailed part catalog/list (other than the dealers I'm already pestering on a regular basis)? Looking for something that covers the 2004 HB.

An example of parts apparently not covered in the Trade Motion catalog are the rear door to center pillar wire looms needed to add lock actuators (etc.) to the back doors. TIA for any suggestions.