I have a 2006 Silverado 4.3 V6. I need the fuel pump pressure for when the key just gets turned on and when the motor is running. Other than paying the price for subscriptions for the answer all I've been able to figure out is generally 50 - 60 psi. Can anyone help me?

 

Welcome to the forum. Try 55-62 psi. It's not tied to the manifold vacuum and thus should not vary except for bleeding down with the fuel pump off.