Transmission noise

Allrighty, so i was driving downtown tonight and i stopped at a Stoplight. As soon as i stopped i heard this popping noise. i got to worrying again i applyed the brakes and after the truck had stopped, i heard a faint popping noise again. the same noise was again heard after taking off again. So i tried re adjusting the brakes by backing up in reverse and applying the emergency brake to stop the truck. Is this noise Normal or abnormal. Should i take it in to the dealership? it is under warrantee

 

Bump

 

please help, its gettig annoying to hear it and feel it in the truck

 

If you're under warranty, you should take it in.

 

thanks. im probly gonna do that anyway.