Where is the oil sending unit on a 1997 Chevy Silverado 4x4?

On a 1997 Chevy Silverado 4x4, the oil pressure sending unit is typically located on the driver's side of the engine block, near the oil filter. However, the exact location can vary slightly depending on the specific engine (e.g., 4.3L, 5.0L, 5.7L, etc.).

To be certain, you should:

1. Consult your owner's manual: This is the best source for the precise location on your specific truck.

2. Look at a repair manual or online diagrams: Many websites (like Chilton or Haynes) offer repair manuals with diagrams showing the location of various components. Search for "1997 Chevy Silverado [your engine size] oil pressure sending unit"

3. Visually inspect the engine: With the engine cool, carefully examine the area around the oil filter. The sending unit is usually a small, cylindrical device with one or two wires connected to it. It might have a single wire for just the gauge, or two wires if it also controls a warning light.

Caution: Be careful when working around hot engine components. Allow the engine to cool completely before attempting any inspection or repair.