Where is the oil pressure switch located on a 1999 Chevy suburban 4x4 2500 454?

The oil pressure switch on a 1999 Chevy Suburban 2500 with a 454 engine 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 configuration. It's usually a smaller switch, often with one or two wires connected to it.

To find it definitively:

1. Consult a repair manual: A Chilton's or Haynes repair manual specific to your year and model Suburban will have a detailed diagram showing the location of all components, including the oil pressure switch. This is the most reliable method.

2. Use a parts diagram: Many online auto parts stores (like AutoZone, Advance Auto Parts, etc.) allow you to look up parts diagrams for your specific vehicle. These diagrams will show the switch's location.

3. Visual inspection: With the engine cool, carefully inspect the area around the oil filter. Look for a small switch with wires connected to it. Be mindful of hot engine components if the engine is even slightly warm.

Remember safety first! Always disconnect the negative battery terminal before working on your vehicle's electrical system. If you are unsure about performing this yourself, consult a qualified mechanic.