3rd gen coolant leak

Any Hawaii 3rd gen owners out there have coolant leak issues? It's been well documented out there in TW about the plastic rear bypass tube having leaking issues.
Recently noticed having low coolant reservoir,, but haven't noticed any obvious leaks? Had a friend do a pressure test and also no leaks detected?

 

I'm not sure why you 're only asking Hawaii guys??
This isn't an exclusive Hawaii thing.
2016 to early 2018 was the years to be worried about.
How many miles on you rig? Any sign of coolant in you Oil? Did you do a combustion gas test of you coolant?
If the bypass is leaking you may not see any leaking because it's slow and evaporates before it can drip.

 

Just asking locally if anyone who has dealt with it, where would be best to get a diagnosis and repair cost.btw reached ot to servco service, replied as not know issue

 

The Service writers at Servco don't know anything.
Get an inspection mirror and take a look behind the motor at the bypass tube and all around the motor. See if you are able to see pink dried residue. If it is the bypass even if your truck is beyond the Warranty I believe that because of the TSB they need to fix it!
https://amzn.to/46Cj4u7

 

I'll look into it, mahaloz!

 

Is it possible you have a head gasket leak? Mine was leaking and I never realized it until the dealership was doing warranty work on my leaking timing cover. Apparently my water pump was also leaking. Luckily for me it was all covered under warranty.