I hope the info was some help, there are two vacum pumps, the one under the seat is used to lock and unlock the doors, backup assist, trunk lid grip, headrests on some versions, orthopedic seats, and manifold vacum-assist for hvac. The other over the rear wheel controls the "pull-in" of the doors and lid. The bulletin to the dealers modifies the handle to pull in when the lid closes you will notice if there is a delay after the trunk closes the handle pulls in. At least on my 92, I was a veteran of the fuse pull game.