I Have A 2001 Gmc Yukon And It Continues To Stall And Have Problem Staying Running?

[Pamela]

I Changed The Fuel Pump, Spark Plugs And Wires, The Fuel Filter,the Valve Gasket And A Oil Change. The Truck Will Start Put There Is A Popping Sound When I Give It Gas And Then It Will Die. But We Put A Towel With Gas On The Throttle Body And It Starts And Runs Just Fine. I Got The Light Tested And It Show Multiple Misfires Please Tell Me What Direction To Look? The Truck Will Not Go Far And Is Idled Low

 

[Shalin]

Have you thought of replacing the coil packs? If you know which cylinders are misfiring and if they are consistently misfiring it may be time. I replaced one of mine on my '02 Yukon after appx 100,000 miles.

 

[I_Heart_SLTs]

Sounds like a fuel problem, can you test fuel pressure?

you really need a scan tool to diagnose other problems, like MAF and TPS ect.

 

[Molson02536]

I Changed The Fuel Pump, Spark Plugs And Wires, The Fuel Filter,the Valve Gasket And A Oil Change. The Truck Will Start Put There Is A Popping Sound When I Give It Gas And Then It Will Die. But We Put A Towel With Gas On The Throttle Body And It Starts And Runs Just Fine. I Got The Light Tested And It Show Multiple Misfires Please Tell Me What Direction To Look? The Truck Will Not Go Far And Is Idled Low

Start with the simple and check your fuel pressure at the shredder valve. You mentioned that you replaced the fuel pump, the wire harness if not changed my be bad and or the ground wire on the frame may have a bad ground or not connected. A bad ground will cause a week fuel pressure.

As mentioned start with checking the fuel pressure and then check the fuel pressure regulator for any leaks or the vacuum line cracked and damaged.

Good luck and keep us posted