Where is the oil pressure sensor on a 2006 Chevrolet Silverado 4.3 liter v6?

The oil pressure sensor on a 2006 Chevrolet Silverado 4.3L V6 is located on the driver's side of the engine block, near the oil filter. It's a relatively small sensor, and you might need a flashlight and possibly a mirror to get a good view of it, depending on how much other equipment is in the way. It's usually screwed directly into the engine block.