MSM Power and Ground
WARNING: This page is about a different car, the 2002 Oldsmobile Aurora and 2001 Oldsmobile Aurora. However, it is still accessible from the selected car via links, so may be relevant.
Battery positive voltage is supplied at all times to the MSM through the battery positive voltage circuit from the PWR SEAT Circuit Breaker located in the rear fuse block. This voltage is used to power up MSM and also to apply power to the seat motors when commanded. The MSM is grounded through the module ground circuit and G 301.