2012 Yukon Denali with 6.2 engine. Truck stalled and shut off while driving. 169000 miles.

[basstracker89]

Give ya tree fiddy for it..........

After you pull all your hair out, you might pay him to take it back.....

 

[basstracker89]

Dem womens is tough on a vehicle. It's a full time job trying to keep up withem.......

 

[prestige30165]

My wife and I just went to lunch and while I was driving this happened. Starting from a light and accelerating the truck starts chugging and rpms going up and down and acting like it was going to stall out. We turned around and came back home. No check engine or any other warnings indicated or DTCs.

Did the dash lights and gauges flicker at all?

 

[butchvette]

Do the door locks cycle? Very common for negative cable to have excessive voltage drop. spec for voltage drop on cable is 200millivolts sorry.

 

[testdepth]

No dash flicker or gauges wierdness yet

 

[testdepth]

In the last 2 weeks I have changed out:
New OEM fuel pump
New MAF sensor
New Crank sensor
New Throttle body
New EVAP cannister
New Purge solenoid
New oil and filter

Today my wife drove 40 miles and sat in this truck at idle in park with AC on waiting for my daughter. Engine temp 210.
The truck just shut completely off. No stumbling or chugging but just shut down like turning a switch off. She restarted it after a few minutes and sat there again at idle and once again the truck shut down. No check engine lights or warning lights of any kind.

 

[BillsCamino]

 

[testdepth]

View attachment 9462933

Okay, that's pretty damn funny right there.

 

[CAMSDADDY]

May sound .dumb but how are the engine mounts?
Wonder if a bad.mount could allow engine to torque and cause a short or.make.it lose grpund

 

[testdepth]

The problem is the EVAP Purge Solenoid. It was not bad enough to throw a code but it was bad enough to make the ECU think the engine was flooded so it would shut off. I installed a new GM Purge Solenoid and no more problem.

I hate the EVAP system and wish I could bypass it and rip it all out!

This is exactly what my truck was doing: