2000 GMC C3500 EGR Tube

You should remove the Exhaust Gas Recirculation (EGR) pipe bracket retaining fastener, loosen the pipe fittings at both ends of the EGR pipe and remove the EGR pipe.

You should install the EGR pipe in the proper location and start the pipe fittings by hand, ensure that the EGR pipe fittings are correctly lined up on the adaptors to the exhaust and intake manifolds, tighten the EGR pipe fitting to the intake manifold and install the EGR pipe bracket retaining fastener.