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2007 Tahoe 5.3

Sam 11-2




I have a 2007 Chevy Tahoe with  a 5.3 l. I recently have been having hard starts. what I have been reading it looks the fuel pressure regulator has moved and is now part of the fuel pump is this true? I checked the rail pressure and key on I get between 55-60 psi after sitting all day/night pressure drops to about 0psi. And I have an extended crank time. Is the fuel pump the issue or am I missing something?


Thank you for taking the time to read this.



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It’s normal to drop Pressure after that length of time. You check regulator drop for 1 minute after key off. If you maintain pressure for a minute after the pressure test, the regulator is good. So by hard start, do you mean an extended crank before it starts?

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