To find the correct fuel pressure specification for *your* 2001 Silverado, you need to:
1. Identify your engine: (e.g., 4.3L V6, 4.8L V8, 5.3L V8, 6.0L V8) This information is usually on a sticker under the hood or in your owner's manual.
2. Consult your owner's manual: This is the best source for the precise fuel pressure specifications for your specific engine.
3. Check a reputable repair manual: Repair manuals like those from Haynes or Chilton will also list the correct fuel pressure for your specific vehicle.
4. Look up online resources: Websites specializing in automotive repair information (but be cautious and verify information from multiple sources).
Without knowing your specific engine, I cannot provide the correct fuel pressure. Attempting to use the wrong fuel pressure could damage your engine. Always consult your owner's manual or a reliable repair source.