07 ram 1500 4,7l. When I slow down from highway speeds, at around 40km/h there is a gnarly thumb or thud that jolts the truck. It feels like its downshifting hard. Has anyone had this? Truck only had 74000 kms!
Thanks

 

Are you the original owner? Any shift kits or Sonnax Line Booster installed? You ever dropped the pan and changed the fluid and filters before?

 

No I'm the second owner just got my truck about
Three weeks ago I'm not sure a out previous shift kits.
I've never dropped the pan and changed fluid and filters. Is it a complicated job?

 

Mine does it too sometimes and I have changed the fluid.

 

Glad to see I'm not the only one. Mine has done it a few times and even completely shut off on me while driving. Had the fuel pump replaced but the hard shifting started again. Fluctuates while idling in park as well.

 

i took my truck back to the dealer because its still under warranty (by three days) and they said there is a crack in the filter so they put a new one in and changed the fluids....
still doing it
so now im stuck with a caravan while they pull the body valves out?
what exactly are these body valves and what do they do... they never explained it to me.
ill let you guys know whats going on when i find more out

 

The valve body is inside the trans and is not setup correctly can give issues like what you are having. Some guys modify their VB or add shift kits to make it shift faster or more firm

 

the dealer finally figured out i needed a new transmition... thankfully the dealer was really good and wanted to keep my business, so i traded it in for a 2012 5.7 Ram 1500!
just cause im leaving the 3rd gen ram doesnt mean im leaving ram!