I've been a fan of CHEVY since my first car (68 Chevelle). But this Suburban has shaken my faith in the most reliable engine, the 350, ever built. First problem with the transmission at 10k miles, gear replacement. Then 4-wheel drive issues, when in 4-wheel HIGH or LOW the car feels like it is braking when turning the steering wheel; the dealership can't find the problem & said do not use the 4-wheel drive feature (makes sense?). More problems w/ trans. @ 45k miles - lost REVERSE. Since then - an exhaust manifold leak & a head gasket replaced (this SUV only has 53k miles on it). Now A/C problems. AGAIN I say - BIG disappointment!
Granted I did buy this in 2010 with 200,000 miles on it. Interior door handles broke inside. cheap plastic parts throughout break way too easily. Great interior space. Have 4 kids so we all fit comfortably. Rear heat works great, tinted windows and lots of power. It was starting to nickel and dime. Rear end differential parts broke, transmission wouldn't stay in overdrive, lots of electric gremlins left interior lights on randomly due to shorts behind dash. Intake manifold gasket went ($600 repair). Horrible gas mileage. Rusting in bad spots due to poor rust proofing. Water leaks into blower, rusting it out insid. I liked driving it but it was going to bankrupt me keeping it up.
Purchased with 42k miles and now at 178k miles and still going. I perform maintenance at local mechanic when needed and never replaced the transmission in 178k miles. Brakes should be larger as others have suggested. Great SUV for families and very safe for highway and local traveling. Awesome camping vehicle for tent camping and now towing large Pop up camper. Recommend to anyone looking for late model large SUV.