Cold start issue

What is the reference to a "software update " and the specifics?
Not going with timing chain stretch when cold.
Starts and runs great after initial start up.

 

What startup issue are you having?

 

No clue what you are talking about.

 

If a timing chain is stretched then its stretched all the time, cold or hot. Also, wut?

 

Turns over fine but will not catch on initial cold start
Wait a few and will finally start. Then has no issue all day.
Has 82k on odo.

 

2018 here and starts fine everytime.

 

What year truck? Does it help if you turn the key to run a couple of times to cycle the fuel pump?

 

Isn't there an issue with Flex fuel trucks in the cold?

 

Try another tank of gasoline from a retailer that has high volume. You may have gotten a tank of summer gasoline if your station doesn't sell much. Summer gasoline = lower volatility. (To reduce emissions, your government at work helping you.)

https://blog.amsoil.com/the-difference-between-winter-and-summer-blend-gas/#:~:text=A primary difference between winter,blend fuel requires increased RVP.

 

Battery?? How cold are we talking about?? Low battery charge may cause a fail start and a good second start.. ask me how I know... lol..

 

https://www.tundras.com/threads/startup-hesitation.79161/

 

I would suggest using a bottle of BG Products 44K fuel injector cleaner. Available at Napa Stores. This stuff works great and usually only takes one bottle to clean things up and lasts for a long time. I usually put 1 bottle per year per vehicle. And never have a problem with no matter what type of fuel I use.