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fuel pressure on 1999 GMC 1500 Pickup

what is the correct fuel pressure with key on and running in ideal

Asked by for the 1999 GMC 1500 Pickup
The fuel pressure spec for 5.0L and 5.7L V8 engines is 60-66psi with pump running and engine off, 55-60psi with key on after pump turns off. Fuel pressure should hold steady after turning the key off.