1999 Chevy Tahoe Fuel lines and cooling system

I 'm currently working on a'99 chevy tahoe trying to remove the intake manifold to replace the gasket since it is leaking coolant but now I am stuck sine there is not much room to work on it and I am trying to remove the fuel lines in orer to get the plastic cover to get to the intake manifold
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anyone got any sugestion about how to it or a easier way