6 Speed Transmission Issues

[RandyxGM]

20 hours ago, pokismoki said:

get a torque converter from the 2500 6L90,  you might also have broken fins inside the conveter.

 

install aux trans filter

 

install trans cooler, and delete the thermostat in trans

Transmission has 308 miles on it, reman off the shelf unit, already replaced first one under warranty. This one is worse.

[pokismoki]

who rebuilt it? GM?

[RandyxGM]

12 hours ago, pokismoki said:

who rebuilt it? GM?

No idea other than not Jasper.

[RandyxGM]

Anyone ever connect the dots between Fuel Trim at low RPM and misfire? My transmission shop is working with me on this in a very positive manner. They have already installed 2 rebuilt transmissions and we are working together in attempt to fix this issue. I have seen on these forums a Fuel Trim issue where at very low RPM (where a lot of us are seeing that shudder) the engine is not getting adequate fuel for the load. Anyone? 

 

https://www.gm-trucks.com/forums/topic/234471-shuttermisfire-under-low-rpm-and-load/

[pokismoki]

4 hours ago, RandyxGM said:

Anyone ever connect the dots between Fuel Trim at low RPM and misfire? My transmission shop is working with me on this in a very positive manner. They have already installed 2 rebuilt transmissions and we are working together in attempt to fix this issue. I have seen on these forums a Fuel Trim issue where at very low RPM (where a lot of us are seeing that shudder) the engine is not getting adequate fuel for the load. Anyone? 

 

https://www.gm-trucks.com/forums/topic/234471-shuttermisfire-under-low-rpm-and-load/

ask on the "hptuner forum" under gen 5 , 80% of the guys on here are not that technical