Serpentine belt failure
I have a 2014 LTZ with the normal 1.4L ecotec engine and ~180,000 miles. I just replaced the valve cover and did the Cruze kits pcv fix within the last few days, and replaced a leaking coolant reservoir and the AC compressor about 5 weeks ago.
Today my serpentine belt shredded while driving 70mph on the interstate. Any suggestions for things to check to determine if something other than standard wear is what killed the belt? And anything I need to check for damage after the belt failed at highway speeds? How I noticed something was wrong was the overheat warning, and I immediately got to the shoulder and turned off the car within 15 seconds or so. It did leak what seemed to be a larger than typical amount of oil on the side of the highway while I was waiting for a tow. I'm wondering if the crankshaft seal blew out as I've seen in some other posts and YouTube videos.
Thanks in advance!
Update: the crankshaft seal had fully blown out; it came out wedged onto the harmonic balancer instead of needing to be pulled out from the crankshaft opening. The tensioner pin had also broken. I replaced the crankshaft seal, the serpentine belt, and the serpentine tensioner.
Tensioner - $33 from Amazon: https://a.co/d/0d5nkuLP Serpentine belt - $19 with coupon from Advance: https://shop.advanceautoparts.com/p/carquest-standard-serpentine-belt-55.1-long-5-rib-count-551k5/50164452 Crankshaft seal - ~$10 with coupon from Advance: https://shop.advanceautoparts.com/p/national-engine-crankshaft-seal-711024/12229771 (All $ in USD)
The hardest part by far was getting the harmonic balancer bolt out. It took a handful of rounds of using my impact wrench at the highest psi my little 6 gallon pancake compressor could get to (150 psi). Eventually it broke free and everything from there went pretty smoothly.