Two transmission fluid changes close together like that would definitely raise a red flag with me ... but then again ... there are so many other
red flags already raised that it'd be hard to see it! LOL!
You don't want to purchase a vehicle and have to worry about its "major mechanicals" right out of the gate. With these 2.4's, the biggest concerns are:
1.) Oil Consumption:
GM got sued for these Engines from model years 2010-2012, and early 2013's until they claimed the problem was rectified with new and improved Piston Rings in the late 2013 Model year run. This 2016 is supposed to have the N&I Rings, but do they really fix the problem?? We're not so sure. Maybe they just slow the problem down. If you buy this 2016, realize that you're signing up for pulling and checking its dipstick at least as often as you change your underwear ... to avoid getting caught with your pants down (i.e. NO OIL)!
Not really a major concern with these vehicles, but there have been some failures reported (and at shockingly low mileage). Is this 2016, with two recent fluid changes, about to join this club? How lucky do you feel, @Anduril
3.) Cracked Exhaust Manifold:
Not really a "major" problem, but a chronic one that will cost you a few hundred bucks to fix if yours cracks (and many seem to ... in the exact same place!)
4.) Frozen PCV and Rear Main Seal Blowout:
If you're gonna drive this 2016 in a snow-belt state (or anywhere it gets cold for longer than a few minutes), you better get the special Oil Filler Cap with the "Breather" hole to make sure your 2016 doesn't suddenly, and catastrophically, blow out its Rear Main Seal and lose all of its Oil!
5.) Timing Chain:
This one occurs when you run the Oil low on these 2.4L Engines. See #1 above.
That's 5 Red Flags!
How much are you expecting to pay for this (1 Flag short) Amusement Park Ride?