Break line size and threads Tahoe 2002

[M123]

Hi.
Really need help, have my truck standing at a mechanic after break failure, did have what I call a (gubbärring) in Swedish, can be translated as a grumpy old she-man did go right out in front of me on the highway. Did break so hard so the break line did pop.

Now the problem, the mechanic don't know what lines are used on the truck.
I say 1/4 but I am not sure.
Can please someone clear this out what lines are used and where on the Truck.

My RPO list.

https://www.tahoeyukonforum.com/media/2002-chevy-tahoe.28286/#caption

Thanks

 

[M123]

Update.
Will take the truck home and work on it myself.

 

[M123]

I will buy a hole new kit with lines.
JE1 - EUROPEAN BRAKE SYSTEM are my RPO and can't find anywhere what kit to use?

The general agent for GM parts over here have blocked private buyers to have access to the parts list and prices can't even get access to the parts numbers so did hit a big wall in the hunt for parts here. Did get directions to a dealer they suggested but the knowledge wasn't there.

So I am hoping someone here can help me what set I should buy for my truck?
Thanks.

 

[M123]

Was 1/4" line on the hole truck.