From the sparsity of replies you can see not as much notable as might have otherwise been the case for a stamped-out hi-production rate 10+ year old GM vehicle. As I alluded to above, the Autoleveler has a habit of going 'wonky' (um, a Fleetwood-specific term -- you don't want to know).
Other than that, the rattles and squeaks from old age are the most unnerving things I've noticed, and that's only because the car started out tighter than most other old GM boats I've been used to. I went ahead and bought all new rocker trim mounting clips when I repainted everything. Costly sure, but alot were cracked and broken anyway and I thought it cheap insurance against replacing falling-off $350 replacement trim pieces. Yikes
Suspension carries alot of weight around, and long wheelbase provides ample opportuniuties for curb rash episodes. So, I'd have to say that since our cars aren't really rustbuckets to begin with, it's the suspension and regular mechanical PM (Periodic/Preventive/Programmed Maintenance) I refer to above that keeps 'em tiptop.
Alot of guys probably wished they'd just replaced the waterpump at about 130,XXX miles (your kilometers may vary
) BEFORE it started dribbling from the weephole instead of having to add replacing their previously-perfectly-functioning-but-now-drenched-dead-OPTI too as part of the WP repair procedure.
You could buy both rear ABS/TC sensors just for grins - and while they're ONLY $5X-6X from Dal. They're sensitive dam things, and seem to get alot of exposure to roadkill and other shrapnel.
If you plan to keep it 2-3 more years and the frontend is still pretty much original, then just replace everything from idler arm & centerlink, to tie-rods, to swaybar bushings -- and everything in between. You can amortize your elevated quality of life easily over the period of just a couple years to make all that a sound investment.
That's all I got. Boys? Any other ways to help Denmark here spend his Euros?