Wow that is a lot of issues.As most say, it's going to be about maintenance (including the previous owner). I purchased my 2006 SE 4x4 for 5500 with 150k miles on it in 2018. I now have 174k miles, have a good amount of fun upgrades and this rig has been really reliable.
Within a few weeks I encountered some issues (I had a dishonest seller and these items didnt show themselves initially, i couldn't see them, the light wasn't on, etc.) :
1. Clock spring failure (no driver air bag)
2. Brake failure (replaced all areas based on learnings in this forum and zero problems since)
2a. Replaced brake booster
2b. Replaced front hubs (speed sensors are built in)
2c. Full brake job all around.
3. Installed lower motor mount bolts (yes, they were missing LOL)
4. General tune up / clean throttle body, replaced plugs, changed oil/filter, changed air filter.
5. changed cabin filter.
Problems I've encountered and resolved since:
1. front CV boots torn
2. Power steering leaks (at reservoir)
3. inner and outer tie rod ends
4. climate control actuator issues.
5. starter relay failure
6. starter failure.
7. squeaky hood
Current problem I have
Oil leak (appears to be oil pan gasket which I'll tackle soon)
Exaust header cracks are interesting, just read extensively about those in this forum. You have to hope it happens within the 80k mile warranty mark or you're screwed. Hmm maybe I'll look at even lower mileage Armada's.I'll be the first to say it. Pre owned cars are only as good as the previous owner. If you find one you like, have it inspected.
These are great SUVs and are solid but can have issues. Exhaust header cracks which can cause failed emissions and be costly repairs. 4WD is solid but does not have locking diff like the Sequoia.
13-15 are the best years to get for the 1st Gen. As most of the previous issues were worked out. These do not offer the latest Bluetooth/Audio, so streaming music from your phone won't work. Need to do a stero upgrade and they have limited options.
We love ours and wouldn't trade it for many other vehicles out there. The newer generation comes with modern tech, maybe worth considering. Great value SUV with towing capabilities that will impress. Happy hunting. Took me a long time to find a well cared for one.