whenever i put my truck in reverse from park, it makes a grinding noise that sounds like its coming from the transmission area. it also does it when i start rolling in drive, but then it does it when im sitting still at redlights...

im pretty sure the transmission is making the noise, but i couldn't figure out why it would do that while it was sitting still...

any ideas on what else it might be or confirmation that its the transmission? i have a warranty that expires in two months soif its the transmission i want to go ahead and get it fixed

 

Sounds like a "sprag" in the tranny...Better get er fixed!