I haven't heard that the 2013 3.6 V6 has the same gremlins regarding the timing chain as the 3.0. But trust me, after prior experience with "fine print" I went over this warranty with a fine tooth comb LOL
If that monster does pay a visit I hope it goes smooth for you!
I don’t think *either* V6 is notorious for the timing chain issue, but a co-worker here had taken his 2009 (?) 3.6L Traverse past 200,000 “miles” when his chain failed (destroying his engine). He opted to install a Jasper reman for $3500+~$1000 labor for his friend/mechanic to install.
My theory is if it happens early - like apparently it has been with the problematic 2.4L engines, it’s due to lack of oil (those engines can have premature defective rings or leaky high-pressure fuel pumps leading to low and/or contaminated oil). But I *still* think it’ll eventually happen at the higher mileages with the V6’s for one or more of the following (same) reasons:
1.) Low Oil: as the V6 Engines age, they’ll start using more oil, too. And with the longer oil change intervals these with synthetics, some of us will get burned.
2.) High Pressure Fuel Pump: I still have my original pump at 115k miles. Will I be able to catch when it starts leaking fuel? Maybe I will just go ahead and proactively replace it at some point.
3.) Plastic Chain Guides: these probably survive the effective life of the vehicle if the oil is maintained, but if #1 or #2 happens, they disintegrate, and game over.
4.) Chain Tensioners: even if you’re OK with #1 and #2, I don’t think these things can be trusted long-term. If any of them start retracting or otherwise lose their grip on the chain, your chain(s) become slack and game over. Some V6’s apparently have already been opened up (after their ECMs complained of cam/crank irregularities and replacing sensors & solenoids didn’t resolve it) only to find nothing amiss (chain intact and no broken plastic guides). That could be the Tensioners, but it’s yet to be proven.
5.) Chains Themselves: some chains have reportedly broken, but I’m guessing the greater risk is “jumping” due to slack. My chains are still original at 115k miles, so I think they’ll be good for the effective life of the vehicle. But, again, #1 or # 2 could change that.