Pump is turning on will run
if i pour gas into throttle
body loosened fuel filter
fuel comes out when i turn
key on for few seconds
Even though you have fuel coming out, it doesn't men you have the correct pressure going to the injectors. You will need to check your pressure at the rails...I think it should be about 35 PSI..
Also check to see if injectors are getting power with a noid light.
You need 55 psi to run. Anything under 50 psi won't fire the injectors. Get a fuel pressure gauge and use the test port on the fuel lines. It's towards the rear drivers idea of the engine bay. This truck has the Spider injectors it's difficult to use a noid light. Typically if you have spark on these engines you have fuel pulse too.
Looking for a Used Yukon in your area?
CarGurus has 19,293 nationwide Yukon listings starting at $2,000.
Search GMC Yukon Questions
GMC Yukon Experts