2001 Chevy Tahoe fuel pump relay

running fine sometimes and then sometimes it goes dead and wont run.

Next time it won't run -do below to determine if its fuel or spark that's causing it.

Get a starting fluid/ether/better off gas in a spray bottle and spray into the carb or the throttle body on an EFI. Did it start and die? If not disconnect a sparkplug wire or 2 and ground it to the engine -have helper crank engine over-do you have a snapping blue spark? If so-you have a fuel related problem, check the fuel pressure to rule out the fuel filter/fuel pump/pressure regulator and listen to the injector/s are they pulsing or hook up a noid light. No snapping blue spark continue to troubleshoot the ignition system-power input to the coil/coil packs,distributor pick-up coil, ignition control module, cam and crank sensors- Note: If it doesn't apply disregard it

[quote="John Ramsey"]Electrical problem
2001 Chevy Tahoe V8 Two Wheel Drive Automatic 95000 miles

I am having the same problem with my 2001 Tahoe and was looking for some answers. It has been dieing recently and mysteriously start five minutes later, except for this last time I was not that lucky. I do know that it is caused by a loss of fuel pressure. Not sure if it is the pump or the relay. You can easily check your fuel pressure at the shrader valve on your fuel line. If your remove the black plastic cover over the intake manifold (one 5/16 bolt). Find the fuel line and follow it over to the left side just befor it reaches the injectors you will see the test port.

Hello John R, just wondering if you found the problem with the Tahoe? I have the same problem and I have changed the fuel pump and fuel regulator and PCM computer. Please let me know how you fixed this.