2015 PW 30k Mile 4wd Service?

[TVIXpaulSPY]

32k miles on my 2015 PW, normally have the dealer do the oil changes, with coupons, it comes out about the same if I was to do it myself. Had the wife drop it off, got a call an hour later and was told that I should do the 30k four wheel drive service because of the miles on the truck, 32k. The advisor was peddling it for 350-400$. Didn't really understand what he was saying it would cover, bad cell connection.

I don't have the manual on me since it is in the trucks glove compartment. Tried searching internet for 2500 Power Wagon 30k mile service. Did really see anything solid except from other dealerships.

What is the 30k mile 4wd service? Do I need it? Is it something that can be readily done by a consumer (like an oil change)?

Just had it with some of these "maintenance services"? I know on our cars it usually is BS and just a way of getting money out of the consumer.

[TVIXpaulSPY]

sorry for the double post.

[ramv]

Seems excessive. I would do the T-case at 50k miles and 100k miles, and the transmission similar depending on towing. The front diff would jsut be based on age or amount of time in mud that might have got some water in. The diff oil itself should out last the truck but moisture will damage it. For a high mileage rig, I normally do 100-150k mile diff oil changes. For hardcore off road I do annual or anytime it "needs" it.

[Chubbs]

I was just looking at my 2018 manual and I'm confused. The only thing 4WD related I found at at 30K:
Inspect the CV/Universal joints
Inspect transfer case fluid

The manual calls for changing T-case fluid at 120K.