Engine loose power and die.

[07 black beauty]

Good evening!
New member here, finally something is happening with our 07 Tahoe. I would appreciate your input.
I will give a little history to problem. This is a flex fuel tahoe and , about two weeks ago wife puts in
E 85, it sets on code for bank 1 and 2 lean. ok so I want to switch back to running regular fuel again to
try and get the high alcohol content back down. Fast forward to today and, stop at gas station to fill up,
leave town to get some grocerys. On way home tahoe starts losing power and dies. We wait a few minutes
starts up fine will go half a mile and die again.

What do you guys think this my be, bad fuel from the fill up, or maybe fuel pump or fuel filter that I
believe is only in the gas tank. Your input is very much appreciated.

 

[iamdub]

"Service Engine Soon" light on?

 

[Doubeleive]

first thing I would check or have checked is fuel pressure.

 

[07 black beauty]

Thanks everyone!, sorry for the delay. Yes had a check light, it was set for bank 1 and 2 too lean.
Yes pressure was not good, would idle but die under load, fuel pump is bad. Thanks again!!