it's not necessary to go to an a/s dealer for most repairs or maintenance.
in fact i suspect you will be GREATLY disappointed,
by trekking to a dealer shop and SHOCKED by the labor rate.
this is a nearly 20 year old stream and the most motivated person to check it over is you the owners.
while parts are available it's 20 years old, so don't expect ANY dealer or service shop to have a lot of stuff at hand.
image u just purchased a 20 year old truck or car that needs 'work'.
start by cleaning, opening things, digging around and taking pics of stuff.
cleaning and simple lubrication will get u up close with the systems and parts.
be prepared to find crud and rust and problems.
if it's been parked in wet areas and not traveling, there will be issues.
but no shop is gonna go over it with the care or motivation of an owner.
as u find things make notes, take pics and read about those topics here.
ask questions too BUT keep in mind you are PRIME MEAT for folks selling stuff.
this means you will get pms
and warnings about doom and offers of parts that U absolutely need.
so don't swallow it all or make buddies yet with online sales/parts shops.
this trailer may have major issues, it's really hard to predict without careful inspections.
IF the subfloor is rotted or soft in many places that will need to be addressed.
you may THINK it's ok and it might be, but most people simply MISS finding the rot...
until they start TAKING THE INTERIOR apart.
((simply removing a few bits of cabinetry or the sofa and bed))
it's like peeling an onion and the deeper layers are tricky to inspect.
here is a great example of a 90s unit like that...
(and this happens to be a GREAT trailer, and looks awesome now)
so unless u are planning a 5000 mile trip immediately, start simply.
yes the "running gear" may need attention, but one can quickly spend $1000s on running gear parts....
only to find other stuff needs to be done to the subfloor or frame or plumbing or electrical...
one can easily spend 5-10,000 $ getting a 20 year old trailer ship-shape,
and that figure goes UP if someone else does the work.
labor rates are expensive and eat most budgets.
do you have a BUDGET for repairs/upgrades?
how much are u willing to spend to get the trailer road worthy?
this is boring but essential detail and needs to be decided BEFORE opening the can o'worms.
IF it needs a new fridge or AC in 4 months, are u ready for that 500-1000$ item?
this is an older house, on wheels, so any of the 'housing systems' might need attention.
DIY vs paying a shop can mean DOUBLE the cost for any one thing.
folks not handy with tools either need to GET HANDY or expect to spend a lot.
yes it's nice to have a good/honest/reliable mechanic nearby and those are hard to find in the rv world...
most dealer/service shops aren't gonna be equipped or interested in doing extensive inspections and preparing 'bids'...
and honestly they won't KNOW how much work needs to be done without taking stuff apart.
much better to do that yourself.
start by cleaning and taking simple steps to explore ALL the hidden interior and exterior bits.
clean/lubricate/tighten and tweak while peeling away the layers of inactivity and crud.
best case scenario is that MOST of the structure is solid and no subfloor is rotted.
if that is the case, and ALL of the systems work reliably...
THEN start on the running gear.
i don't know what the worst case is, but peel the onion.
this comment is NOT directed at you specifically but,
a lot of folks NEW to rvn or streamn buy what they can afford...
only to find out they can't afford the repairs...
then need to decide IF they wanna learn HOW to make the repairs themselves.
so tread slowly and learn as you go along, now that u own it.
the idea the u can "take it" someplace and have it all gone over and fixed and ready to use...
well that generally doesn't happen without a lotta $$$ involved.
this isn't a gloom and doom reply,
simply a suggestion to go slow, make a budget, find any hidden issues and so on...
THEN sort out what to fix, in what order and where or by whom.