Lets face it the average tahoe is driven by someone who doesnt wrench on their own rig and doesnt fix anything until they have to. Hence the hellish dealer costs for repairs and tow bills.
Phaedrus, I have to respectfully disagree.
Granted, I put more work now into my LC than I did the Tahoe but then again I didn't reach 100k on the Tahoe. Also, the maintenance I've done on the LC is high-mileage maintenance like a birf repack and starter contact replacement. I changed fluids just as much in the Tahoe as I do in the LC.
How do you "maintain" an electric fuel pump? Why oh why should I think of preventative maintenace on a fuel pump or an alternator on a three year old (at the time) vehicle. Would a LC owner worry about this in the same time frame? I hear a resounding "no". Do your LC doors fall because of weak pins? Nope. Does you interior rattle? If it does, it's not as much as a chevy, I can guarantee you.
The point I was trying to make is that no amount of PM would have helped my situation with the Tahoe because at 60k these things should not have been happening so frequently.
Oh and one more thing. The Tahoe leaked oil like a sieve. Every time I replaced one gasket, another would let loose.
We LC owners do have problems with our rides but the difference between the LC and the competition is the type and frequency of problems. We have problems with getting our windshield fluid to only spray on the back window instead of spraying the back and the front. We have problems with our antenna mast not going up and down any more. We hear an annoying buzzing sound coming from the exhaust when we mash on the gas. And can't SOMEBODY come up with nice solution to the pathetic sound system with our wimpy 6" sub? Geez.
When something's broken we fix it. And guess what? It stays fixed. Unlike the competition you may have to replace it all over again in a few months, regardless of what maintenance you perform.

Nic