Where is the oil pressure sending unit on a 98 Chevy cheyanne 5.7L V8?

The oil pressure sending unit on a 1998 Chevy Cheyenne with a 5.7L V8 is typically located on the driver's side (left) of the engine block, near the front. It's a relatively small unit with one or two wires connected to it. It's often near the oil filter, but not always directly on top of it.

However, the exact location can vary slightly depending on the specific engine configuration. To be absolutely certain, it's best to:

* Consult a repair manual: A Chilton's or Haynes manual specific to your year and model will have diagrams showing the exact location.

* Use a visual inspection: Once you're under the hood, look closely around the oil filter and the front of the engine block on the driver's side. The sending unit is usually fairly easy to spot, especially if you know what you're looking for (a small, cylindrical unit with wires).

Remember to be careful when working under the hood of a vehicle. Make sure the engine is cool and disconnect the negative battery terminal before starting any work.