06's had TSB for tensioner replacement due to noise and they were new , i would change it at every TB cycle along with oil seals x 2, water pump, thermostat, and coolant. the idler bearing #1 & #2 should have no issue going to the second TB cycle and they can get loud just before that time comes and no question change them both then! a few change them every time but the will make it to the second cycyle!
Some people just do the kit every time and they are smart but have less money than you!
The world's most trusted name in belts, hoses & hydraulics | Gates Corporation surf around here could help with any other questions and thank DJ for the link!!