2010 LTZ experience:
-Cracked Dash twice in the same place, to the left of the Passenger Airbag running from top to bottom. Black on Black. Last one cost $300 because my neighbor the shop foreman had mercy on me. I bought a COVERCRAFT UVS100 Windshield Sun Shade about 2 years ago, and the most current dash is perfect, but I use the windshield cover every day. It also keeps the interior much cooler.
-Replaced Air Compressor on suspension at 100,000 miles with an Arnott unit. Easy fix and reliable once again. Compressor is in a crappy location and catches a lot of trash.
-Both front door handles broken at 111,000 miles.
-If you leave the sunroof open and it happens to rain, even though it has been slid all the way back, the sunroof's sliding cover will become badly stained and slightly orange colored. Stanley Steamer fixed it in 5 minutes when they came by to do some carpet.
-Headlight housings fog up and look like hazy old glasses way too early. On the plus side, cheap DEPO headlights can replace them and the truck looks new again, and the lights actually work again. Be sure and seal the housing joint with silicone sealant before you install them, and let them cure overnight, or water will ruin them.
-Center dash speaker on the BOSE radio comes loose and rattles constantly in the dash. Pop the cover off and use larger diameter sheet metal screws to hold it in place, then no more problems.
-The two small synthetic rubber covers at each end of the front windshield wipers crack and break early on in hot climates. They snap in and out easy, and in Texas the dealer even stocks them for some reason or other...
-Remind folks to fill new oil filters with oil prior to installation, and you may save early wear and tear on your engine. Oops, everybody does that already, right? SURE THEY DO.
-When you change the Iridium Spark Plugs at 100,00 miles, go ahead and pay the $65 to RockAuto and buy new OEM Plug Wires, because by the time you wrestle the old wires off that appear to be welded on, the old wires are not worth a damn. IF you read the Spark Plug box, it DOES say to GAP the plugs.
I will curse myself and admit to not having any work performed on 5.3 litre engine, 6-speed transmission, or any electronic or mechanical part other than those listed above in over 111,000 miles from new. I am a little on the conservative side, and do proactive tranny flushes every 30k and do the same to the radiator, transfer case and differentials. I will cut a rotor one time, then the next brake job I replace the rotors. Oil and filter changes happen every 5,000 miles with Mobil-1 5w30 since I help make the stuff. This Tahoe matches my past Bmw's and Honda's for being pretty bulletproof. Wish I could have said the same for my last Z28 and my little S-10 truck and S-10 Blazer. The few Pics that I have are attached. Thanks for the sticky.