Where is the oil pressure sensor located on a 2003 silverado 2500hd 6.0 liter truck engine?

The oil pressure sensor on a 2003 Silverado 2500HD with the 6.0L Vortec engine is typically located on the driver's side (left) of the engine block, near the oil filter. It's a relatively small sensor, often with a single wire connected to it.

However, it's *crucial* to consult a repair manual specific to your year and engine (a 2003 6.0L Vortec in a Silverado 2500HD) for the precise location. Pictures in the manual will be invaluable. The location can vary slightly depending on specific engine configurations. Looking at a diagram is better than relying solely on a general description.