Is the AC or Defroster on? turn it off next time BEFORE you start it up and see if that Fixes it. If its not that I have no fugen idea.alright i have a 07 taco and when its cold in the morning and i have to move my truck with our letting it warm up, it makes a growling noice that is pretty loud and sound like its coming from the front. It only does this whenever the truck is in gear i thought it was the breaks at first but it continues to do it after i start moving. The dealer told me that all cars do that its just thick transmission fluid...YA RIGHT. Anyone else have this problem??