2017 Silverado sputters and dies when its hot 100 Plus,

[chevydr]

 We have 2 identical trucks 1 has the larger engine. they both have the same issue. we are in Las Vegas very hot conditions. engine never gets over 212 we have had fuel pressures tested and everything else you can think of. if its hot it happens cold weather never have problems. we tried full tank of gas all the time it dont help. driving down the freeway and it starts running erratic and eventually dies. HELP any ideas.

[Ravenkeeper]

1 hour ago, chevydr said:

 We have 2 identical trucks 1 has the larger engine. they both have the same issue. we are in Las Vegas very hot conditions. engine never gets over 212 we have had fuel pressures tested and everything else you can think of. if its hot it happens cold weather never have problems. we tried full tank of gas all the time it dont help. driving down the freeway and it starts running erratic and eventually dies. HELP any ideas.

No codes?

 

[Gagliano7]

Maybe your IAT temp sensor is bad. If it is like the LS motors the IAT sensor will read -33 degrees or somewhere about that temp so when it gets real hot out it is trying to fuel for a cold temp.