Turned 5000km since we purchased this today, so I figured I'd post a little update.
First, and most importantly, the wife still loves it....and I don't hate it.
Took forever to get through paint correction, but I did it.....Never again though
The first issue we ran into was a leaking right rear tire, it didn't seem to like taking in air when I'd fill it, took 3-5 minutes to add like 5 lbs. Took it to my local CT, the tpms (which is apparently integrated into the valve stem) was leaking. $60 for a new TPMS, no labor charge (guess the service manager figured he'd be nice to a corporate guy...)
The rear wiper wasn't working when we bought it, so I spent a couple hours playing with the wiring, eventually felt pretty confident that the wiring was good and that it had to be the motor. Ordered a new motor ($200), installed it and it worked, but slowly. More wiring diagnostics turned up a weak ground, added a supplementary ground and it's working well now. Replaced all 3 blades on the truck with new Bosch units (freebie!)
Headlight assemblies are faded, and one is cracked, so I ordered two new replacements ($170 + plus $280 credit I had with a supplier). They've arrived, but I haven't installed them yet. Ordered some LED DRLs ($20) to replace the yellowish halogen bulbs, we'll see how that goes...(factory headlight are HID/Xenon so I won't mess with them).
The A/C belt was looking pretty sketchy, so I got some new belts ($50) and replaced both the big serpentine and the small A/C belt. Easiet job ever, and now I have confidence that they won't snap out on the highway. Here's the old A/C belt....Pretty sure it was original to the truck:
One issue that's still waiting on parts to come in before I can fix it is the Rear HVAC controls. One day it started blowing hot (like heater hot) air at some rear passengers. At first I thought they (my mom, wife and brother) were just too dull to figure out the controls (we were coming back from family evening out), but the next day some (sober) friends had the same issue. I diagnosed as a broken blend door actuator on the rear system - a new one is on it's way (freebie, again!) and it looks like a relatively simple install.
Front axle seals are leaking, very common issue on all GM trucks on this platform. I am not going to tackle myself since a press is required for one side, so it'll go into the shop when my mechanic returns from vacation in 2-weeks.
Lastly, just this week a rear A/C line sprung a leak where it goes through one of the brackets...The bracket just rubbed through the metal line. Since the rest of the line looks mint and access isn't too bad, it's probably something that can be spliced rather than replacing the whole line. Either way, I've had my fill of A/C work this summer, so it'll get done at the shop along with the axle seals.
That probably sounds bad to some of you, but this type of stuff is expected when buying a 10 year old high mileage vehicle, so I am not surprised or annoyed really. In my general experience, you spend the first 3-6 months sorting out little issues like this, after that it's pretty solid....Looking forward to that with this one