I purchased my 2008 Chevy Aveo a year ago. It had about 46,000 miles on it when I purchased it. I know from reading a lot of articles they timing belt is prone to go on this car. So at a little after 61,000 miles I decided to change the timing belt. My sisters Boyfriend who is a mechanic helped out with it. We ended up installing a Dayco Waterpump kit. Which included the timing belt, water pump, tensioner. While we had it apart we also replaced the serpentine belt.
After the install everything seemed to be fine. I drove it three hours home the next day. It sat from sunday night till wednesday. When I started it up I noticed a weird feeling in the car. Like it wanted to go while in park. Almost a revving feeling. I let it run for a little bit and the check engine light came on (P0300). Took it to the shop to get have a crank shaft relearn done to the engine. Which didn't fix the problem. Took it to my relatives house and got it far enough apart to see I was off a tooth on my timing marks.
My sisters boyfriend came and helped me reset the timing belt, and put it all back together but still the same problem. We did notice that the two peeks on the new Dayco tensioner, don't seem to stay together when its running and move slightly.