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  1. 3rd Gen. Powertrain
    I have an 06 with the 48re 4x4 with 167k miles on it, nothing done performance wise to the engine just an intake and cat back pipe pretty much, transmission slips sometimes, recently it started making this very high pitched knocking/ticking sound and has gotten progressively louder, the shift...
  2. 3rd Gen. Powertrain
    Hi all, I am considering of putting in a superior shift kit since I have the valve body out for a detent repair but have some questions. But for some background, the truck is a 2003 ram 2500 with the 5.9L 24v cummins with the 48re, all stock, no mods whatsoever. It has just over 400,000...
  3. 3rd Gen. Powertrain
    I have a whining noise that happens when the torque converter locks up usually exactly at 80kmh(50mph) and it will go away when I speed up around 90kmh and then comes back the loudest when I decelerate back to 80 until the torque converter unlocks. Goes away if you put it in neutral also. This...
  4. 07.5-09 3rd Gen 6.7L Performance Parts Discussion
    I just purchased a 09 6.7 bottom end I plan on building for 1000-1500Hp for my 91’ gmc I’m making a drag truck. I’ve been told many different ways I can go about building this. From boring the cylinders 0.20”s or 0.40”s over and running bigger pistons, sleeving the block down to 4.125” but I’m...
  5. 3rd Gen. Powertrain
    Hey everyone, new to the forum and I got a couple of questions. Just bought a 2006 2500 5.9 with 125k on it. I've been noticing since having the truck, the transmission has been shifting hard. Not bad... just slaps pretty good between shifts (but not all the time) and jerks pretty good when...
  6. 3rd Gen. Powertrain
    2005 2500 5.9, 48re transmission, 273000 miles Looking for some input in diagnosing my truck here's what's going on. Replaced injectors 13,000 miles ago. Just had them gone through about 1000 miles ago. Truck does not smoke, have preformed kill test on injectors, that all checked out good. And...
  7. 3rd Gen. Non-Powertrain
    I have an 04 Cummins with a 48re and highway gears. I use it to tow my T250 Bobcat on and equipment trailer (around 14,000lbs) my Brother has a simaler duramax tows it like a dream and always stays under 2000 rpm. My truck will only do 60 mph and I have to give her the beans to even do that. My...
  8. 3rd Gen. Powertrain
    Hi All, I have a 2003 3500 with the 5.9 and 48RE trans 4wd. I was mountain driving (climbing) and all of a sudden i was not able to get into any gear except 1st and reverse. However, if I go downhill, I can access the other gears (it will select the correct gear for my speed). It will also stay...
  9. 3rd Gen. Powertrain
    Hey guys have a few questions on my 03 5.9 cummins with a 48re .I just put 60hp injectors an a bully dog 50hp tune an now the trans slips a little bit in 2nd gear when you punch it about 3/4 throttle . It takes right off then jumps in rpm and stops pulling as hard. Also does the same thing in...
  10. 3rd Gen. Powertrain
    Anyone know of a reputable 48RE rebuilder in Idaho? I have 325k on my transmission " working fine", looking to do some HP upgrades. Thought I better start with the transmission!
  11. 3rd Gen. Powertrain
    Hello, new to the forum and am looking for some help. I have a 06 cummins with a 48re transmission 168k on the truck . The transmission was rebuilt in 2009 and has a aftermarket torque converter. I bought the truck in September and a few days after the purchase I lost overdrive. I replaced the...
  12. 3rd Gen. Powertrain
    hello has anyone ever made a adapter or a jig that allows you to use a 48re neutral saftey switch in a 47re. or maybe a way to wire it to get it to read like a 48re??? i’m wanting to make this work and i’m good for any input on this topic! if no one has any idea i will build out the 47re and...
  13. 3rd Gen. Powertrain
    Hello I hope I got this in the right spot I'm fairly new to forums, haha. But anyways I recently bought a 2004 ram 2500 quad cab 5.9 and I went to change the transmission filter and pan gasket for a good over all service and noticed right in the center of the transmission just infront of the...
  14. 3rd Gen. Powertrain
    03 4x4 diesel w 48re tranny halo would only Appear around P and N. wiggled stuff around and it worked. did this 3 or 4 times then wasn't able to do that. Replaced the transmission range sensor with a Mopar part. still not working. local tranny shop says week and half before they could even...
  15. 3rd Gen. Powertrain
    I got a 2006 5.9 with a Heavy Hauler 48re. its only a couple months old and put a new cooler and lines on when we got the new one. Its got a bully dog gt tuner, which is ran on tow 90% of the time. The tuner comes with set defuel levels that you adjust, its trans temp defuel setting is set at...
  16. 3rd Gen. Powertrain
    Transgo asks us to drill a hole in the TC portion of the valve body. I would love to hear experiences for those that have either drilled NO holes, ONE hole and TWO hole in The valve body. How did the TC lock up feel with those three variables?. I am leary of fabricating the valve body...
  17. 3rd Gen. Powertrain
    Truck is a 04 2500. It has 322,000 miles on it. We put a new GM governor and BD transducer into the trans April of 2020. While he had the trans open he adjusted the bands on it. Last week I was driving it to the store, going down a hill. I heard a small pop and the trucks slightly jumped like I...
  18. 89-93 Powertrain
    So I’m looking at buying a 93 first gen with the A518/46RH I want to know if I can swap a 48RE into it, the 48 I’d want to use is going to have a full manual valve body and a gated shifter Edit: I know it won’t bolt right up, I’d probably have to change the adapter plate, flex plate starter and...
  19. 3rd Gen. Powertrain
    48re. I recently dropped the transmission pan to replace the filter. I drained what fluid came out of the stock pan. I don’t know if my transmission was low on fluid. It took 8 quarts to fill it. I am dropping my pan again to swap out the governor pressure solenoid and transducer and adjusting...
  20. 3rd Gen. Powertrain
    Happy Sunday!! Well I hope it is for y’all at least. I was taking my truck to get tires on it ( 35x12.5x20’s) and I was gonna roast them off the rims before swapping them. I did a good burnout and when shifting to 2nd I heard a bang and it slipped into 3rd. I thought I broke a band or Bent a...
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