Warm idle for lm7 while in gear?

[jro909]

I've seen similiar issues discussed on here, by my drop will drop below the idle mark on the rpm gauge randomly after stopping, then bounce back up...i can feel it in the cab so its not the actual guage..it seems to only happen when the truck has been driven awhile in hot weather, and its not a constant thing..no codes or warning lights...rpms stay stable in park or once they bounce back(takes not even 5 seconds)....kind of like the trans is getting confused when it downshifts while braking...any ideas?

[gmtech4]

clean MAF sensor and get both sides of sensor with a long q-tip bent /broke @45deg angle ,for giggles,,

 

use "sensor safe" aerosol cleaner

[jro909]

thanks robert i'll give it a shot