Hello, long time lurker/leaver/justcame back for help
Recently when I start my truck, (2000 1500 4x4) I get this rattle in the (i think) transmission about 5 seconds after I start the truck and then it goes away after 3 seconds. I makes this noise no matter if it is in park, reverse, moving forward, etc. Just when I first start it. I fell no performance issues, it shifts fine, drives fine, just a loud rattle when starting up, then it smooths out. the only time i can make the sound change is if I change the shifter for the 4x4, but it still does not go completely away. If I rev the engine at first start it waits untli the rps drop back down and then it does the rattle.
any clues? thanks