Review on ATD Tools 3310 Thermostat Wrench by Duane Hayes

If you own a Monte Carlo and don't want to pay a mechanic a crazy price to replace a thermostat, this is a must have tool! It required some minor modifications (which is why I gave it 4 stars instead of 5) but it helped and saved us from having to pay an outrageous price to replace the thermostat. I would also suggest getting help from someone with very small hands if you want to try this job yourself. Not an easy task on this machine. But without this key it would not be possible.