[Curbut]

Just had a terrifying experience. Sitting at a light about three cars back on a busy four lane divided highway. Light turns green, foot off brake and on accelerator; car cuts off. Thought it was the idle stop but I hate that thing and almost always cut it off after initial start. Sure I did it this time. In looking at that button, notice that the vehicle appeared to be in neutral. Hit the Park button then Start, nothing. Everything else was working fine. No codes, radio okay and windows worked. Kept pushing buttons, engine off, engine start, Park, etc. Nothing worked. Emergency flashers on and working. Got my wife and dog out of car and safely on shoulder then tried a few more times to restart, nothing. Nice fellow pulled up and offered to push me out of the road. In anticipation, I pressed Neutral button, nothing. Frustrated, pushed Park then Start and lo and behold it started Pulled off road, retrieved my wife and dog and drove home, about 10 min. This is a 2020 Elite with 20,000 mi. Scary stuff as this was a very busy road.

 

[fx_chip]

That is indeed scary. Happy to know you and your family are safe.
Don't just wave this off, take it to the dealer to check if the vehicle stored any code. You should also get your battery inspected, I have a strong feeling that is the culprit, Idle Stop switched the engine off but the battery failed to restart it immediately the restart was needed. Other forum members have reported similar battery problems but the battery passing out in traffic is rare, most of the cases involve parking the vehicle after a drive then finding out it wouldn't start when you return to it, you get a jump start then everything seems okay for days and weeks after. Searching "Battery" in the forum will give you a lot to chew on.

Keep us updated if you end up discovering what went wrong.

 

[jasonpp]

That is pretty odd that the engine just turned off on it's own.

 

[Passport_It_is]

I never felt comfortable with idle stop mechanism . Therefore I installed the idle stop blocker/disabled gizmo within 1st year. No more worries. It takes about 20 min to install and they have utube videos.

 

[REALM]

I had a Tahoe that would randomly shut off, even while driving. Turned out to be a bad battery, even though the battery was new. Replaced battery, issue went away.

 

[DSN46]

I had a Tahoe that would randomly shut off, even while driving. Turned out to be a bad battery, even though the battery was new. Replaced battery, issue went away.

Hey REALM. I sent you a PM. Don't know if you saw it or not. Thanks!

 

[rjenkins2205]

Just had a terrifying experience. Sitting at a light about three cars back on a busy four lane divided highway. Light turns green, foot off brake and on accelerator; car cuts off. Thought it was the idle stop but I hate that thing and almost always cut it off after initial start. Sure I did it this time. In looking at that button, notice that the vehicle appeared to be in neutral. Hit the Park button then Start, nothing. Everything else was working fine. No codes, radio okay and windows worked. Kept pushing buttons, engine off, engine start, Park, etc. Nothing worked. Emergency flashers on and working. Got my wife and dog out of car and safely on shoulder then tried a few more times to restart, nothing. Nice fellow pulled up and offered to push me out of the road. In anticipation, I pressed Neutral button, nothing. Frustrated, pushed Park then Start and lo and behold it started Pulled off road, retrieved my wife and dog and drove home, about 10 min. This is a 2020 Elite with 20,000 mi. Scary stuff as this was a very busy road.

Same thing has happened to me twice. I have a 2019 elite and did not disengage the idle stop. Going to get a new battery and see if that fixes it. Very scary been in the same scenario twice.