It wants to start but wont
If you replaced the fuel pump, you may have a line reversed or the fuel filter is backwards. Check for kinks. Make sure the new pump is working too. Sometimes it is possible to get a bad part.
SOURCE: yukon wont start
Ok. sounds like you have already replaced the most likely suspects, but let me ask you a few questions to see if I can help you. When you try to start the vehicle is it firing? Do you have fuel pressure getting to the injectors? O.K. this next question will sound a little strange, but it will tell me if the computer control system is working. When you try to crank the vehicle, does the RPM guage move at all while engine is spinning? Let me know the answers and I will try to help you.
I’m happy to assist further over the phone at https://www.6ya.com/expert/jonathan_3a3c556b4b17d1d2
SOURCE: 1999 Yukon Start Issue
we had the same problem until i replaced the oxygen sensors and water proofed the connections
Tom
Testimonial: "Seems helpful -- I am wondering if you had to replace all four sensors or only upstream / downstream? Thank you"
SOURCE: 2003 GMC Yukon - fuel pump
Check your ECM fuse. There should be 2 fuses for your ECM. It's the ECM that controls the function of the fuel pump. Good luck friend and it's also common for the wire harness from the frame to the fuel pump to go bad due to corrosion from the bad weather we get in the winter and rainy spring and fall.
SOURCE: 2000 gmc yukon turns over not getting gas wont
i have an 03 yukon and i just replaced the fuel pump and it ran for 2 hours then it just died on the highway. it turns over but will not start. whats wrong with it???
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what do u check next
Check all your wiring around the area where you worked to replace the pump. Just maybe you accidently knocked a wire off or your pump may have lost it's ground.
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