did you end up getting another Colorado Diesel?I just traded my ‘16 diesel Colorado with 214k in.
Had a couple DPF issues early on covered under warranty. Then around 160k the torque converter started showing some bad signs but I babied it until I traded it. Needed a new DPF and some associated parts at time of trade, didn’t feel it warranted the 7k in work for a truck that booked at 9k or so.
Visit this forum. Many more users with tons of miles. There is a Diesel forum. Make sure you visit the 2nd generation forums versus the 1st gen.