I have a 96 4wd GMC Yukon. I put a new fuel pump in about a year ago and also changed the fuel filter. It has always run great. Lately it acts like it is not going to start, it is almost like it is not getting gas. If you turn it over, it won't start but if you stop trying then hit it again it will fire right up most of the time. Can anybody think of anything for me to check before I give up and take it in somewhere? Can I check the fuel pressure while it is turning over?

Thanks

 

Okay, I checked the fuel pressure and it is 53psi. I checked the wiring harness and I have a good ground plus when it is cranking over I have power to the plug at the fuel pump. I also changed the fuel pump relay to rule that out. What else could it be? I just don't think it is the pump. After I changed the relay it started right up 5-6 times in a row and I thought maybe that was it. Then I tried it again and it wants to fire up but just can't quite get there. Couple of more off and on's and it finally started. So basically I just wasted $12 bucks on a relay. HELP ME!![/align]

 

Drove the truck this morning and 1/4 mile down the road it quits. Restarted it and quickly turned around and when I pulled in the driveway it quits. Parked it! Runs great when its running. Will run non stop sitting in the driveway. Anybody got any ideas on whats next besides the repair shop?