Quote Originally Posted by BillBoost37 View Post
The torx head bolt is found in the #9 location. All pulley bolts on a W body are regular threaded except #3. The only reason to reverse the thread on a bolt is because a tensioner would need to be pushed counter clockwise to release or tension a belt.

ahhhhhhh

this would explain what happened to me today. went to swap out #3 tensioner pulley. broke it loose by turning it counter clockwise and it threaded somewhat normally all the way out. when i went to put the new pulley on i find that the threads are gone. ended up trying to retap it and no luck. put a bigger bolt in and snapped the housing.

whole new tensioner assembly for me =/