1999-2002 GM Full-Size Vehicles with the 4.8L, 5.3L or 6.0L engines with the EGR Tube option.
This part fits 85 GM vehicles with various options. Click here for an overview of the intake manifolds fitment.
GM has two designs of fuel systems, returned or returnless. The difference is in the fuel pressure regulator, either mounted on the fuel rail or on top of the fuel pump.
The most common fuel system is the returned style. If installing this intake manifold on a returnless system, there is no modification of the vacuum routing necessary.
Adding the vacuum source for the fuel pressure regulator can be done in two ways. You could add a tee fitting into the PCV hose. Or on most models, there is an unused vacuum port on the passenger side of the intake.