The fuel pressure regulator is mounted inside the intake plenum. You'll have to take the top half of the intake plenum off and replace the fuel injection spider.
If it is tbi trottle body injection then it is on top of the throttle boby if it is select port injection or vortec it is inside the upper intake manifolid remove upper cover and there she is on the back of inj.
Why did those bastards put a part that is known to fail in a hard to change place?
The pressure regulator is built into the pump. You will need to replace the entire pump unit.Be sure to get the correct one. too high of pressure will cause a no start problem as well.
SOURCE: how do i chang the fuel pressure regulator .
Should be attached to the fuel rail. The fuel rail connects all of the fuel injectors. The regulator will have a vacuum line on it.
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Removal & Installation
4.2L Engine
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