I would suspect either a clogged fuel filter or a defective or not working fuel pump.
low or no fuel pressure clogged injector no pulse signal coming from fuel compter
The fuel injector pressure regulator is located in the injector fuel pump. Most pressure regulators cannot be separated from the fuel injector pump.
No. Fuel pressure at the injector is regulated by the fuel pressure regulator.
The two possible causes are a leaky fuel injector and a failing fuel pump.
attached to the fuel injector fuel rail which is attached to the top part of the fuel injector.
The 2000 GMC Yukon Denali fuel pressure regulator is located on the back of the fuel injector pump. The fuel injector pump is located on the top of the engine.
The fuel pressure regulator is located next to the fuel injector pump. The fuel pressure regulator should be labeled as such.
the fuel pressure regulator should be right on the fuel injector rail
Remove pressure from the fuel system. Remove fuel lines and the rails. Get a fuel injector puller to avoid the risk of damaging the injector. Remove the old injector and replace it.
Bad valves !
MIght be the injector itself.
voltage spike, bad computer, dirt/grit in fuel line plugging injector,