There are 3 reversible motors that operate the power seats. One motor raises or lowers the front of the seat. One motor raises or lowers the rear of the seat. The third motor moves the seat forward or backward. Included with the memory seats is a recliner motor which moves the rear seat back at various positions. To set the memory positions, adjust the driver seat to suit and select the set button to RCL 1 or RCL 2. The driver seat will now adjust to the predetermined positions. The memory seat will be inoperative if the memory seat module receives a brake transmission shift interlock (BTSI) signal. This will not allow the driver seat to adjust to a preset position while the vehicle is in motion. Power is supplied from the SEAT CB fuse (located in the left bussed electrical center LBEC) to the left and right power seat switches via circuit 1440 (ORN). Ground path is provided via circuit 2350 (BLK) to ground G304. The direction the motor operates depends on the polarity of the supply voltage. When the up/down or forward/rearward switches are operated, the power and ground paths are reversed respectfully causing the motor to run in both directions. The forward/rearward and the recliner motors can be serviced individually. The front and rear tilt motors are serviced as one assembly.