Transmission problems after swap
Thread Starter
Staging Lane
Joined: Jan 2010
Posts: 67
Likes: 0
Transmission problems after swap I swapped a 6.0 in a buddies truck that originally had the 4.8. Engine runs great, but now the transmission is leaking up at the bellhousing and is acting odd. It doesn't seem to start off in 1st when in D, doesn't shift to 3rd when in D, but it does if you shift into the 3 position. I can also hear sounds coming from the pan when it is running, they are hard to describe.
My guess is we didn't lock the torque converter well enough to the transmission when we assembled it. I did some research that we may need to replace the front pump and torque converter if this is true. Or is it possible to just split them again and make sure they're locked in this time?
Thanks in advance
My guess is we didn't lock the torque converter well enough to the transmission when we assembled it. I did some research that we may need to replace the front pump and torque converter if this is true. Or is it possible to just split them again and make sure they're locked in this time?
Thanks in advance
No need to split the tranmission, just pull the starter, take out the torque converter bolts, and you should be able to slide the torque converter back about a 1/4in and forward again. Without any issues. If it's jammed against the flywheel it won't push back. I dont think you would have ever got the bellhousing to bolt up if the torque converter wasn't slid back. I doubt that's the problem though... I'd try changing the fluid and filter. If it's leaking at the front seal though you'll have to pull the trans regardless to change it. Did you keep the 4.8 computer? Is the trans paired with the same pcm as before?
I hate to hear that, but I think it may be the front pump / converter. If the converter isn't seated properly all sorts of bad things happen. From what I've been told, if the converter isn't seated properly it will damage the front pump within a very short distance but I don't know first hand.
You (obviously) shouldn't have any leaks and it shouldn't make any odd noises when in gear.
You (obviously) shouldn't have any leaks and it shouldn't make any odd noises when in gear.
