Hi all hope someone can help I have a 2009 Chevy traverse and originally was getting a misfire in cylinder 5 which has now become a random misfire in cylinder 1-2-5. So I changed all the plugs and coils to see if the issue would go away after I cleared the ecm codes. I am at a loss is there any thing I should be looking at?
-Timing chain replaced 2011
-new bosch coils
-new iterium AC Delco plugs
-decarbonization twice by dealer
-add a bottle of techron after each oil change
Could this be a ecm going bad and if so how can I test this theory
any help would be much appreciated

Check fuel pressure. Low fuel pressure can cause random misfire. Also, make sure the battery is good. A week battery can cause all sort of electrical issues, included random misfires.

Fuel pressure is certainly worth checking and the AC-Delco irridium plugs were a good choice, but why did you go with the Bosch coils instead of OEM? I personally have never used Bosch electronics, but there is so much scuttlebutt out there on how bad they are I would never gamble on them.

Ok I have 2009 Chevy traverse and feb 2016 is got brand new transmission and here about three months ago it got new spark plugs due to misfire and now it is jumping at times and marking snooze during acceleration. Just during takeing off not while driving. So it is the transmission again and if so I know it covered for the transmission but what about the work to put another one of this so going bad too..

Not snooze noise not sure why my phone put that

Your best bet would be to start a new thread in the appropriate section so that we can help narrow down your specific issue. It helps to minimize confusion.

Also, more details such as other symptoms you have noticed, any trouble codes or warning lights that have popped up, as well as even possibly a video of any noises or other symptoms.

It also would greatly help to know if you will be doing the investigation yourself, or if you will be leaving it to someone else.