Impala131
New member
Hi all,
So I got a jy cooler for my 4T65E in my 2004 Impala. The rubber parts of the factory trans cooling lines are dry rotted pretty bad, so I felt it best to install barb fittings and run new hose to the cooler rather than splicing.
Found that there was a check valve in one of the transmission fittings.
It was my understanding that the check valve is internal to the transmission on 2004 and later models. I also found that once I removed the fitting, a bit of fluid came out, but the transmission did not continue to drain fluid from the hole where the fitting was. Maybe my transmission ALSO has the check valve in the channel plate, and I don't need the check valve fitting?
Both fittings use the GM quick disconnects on the line side. I kept the factory lines in place (just disconnected from trans) so I can put everything back if need be, and try something else.
Can someone chime in and give me some direction?
So I got a jy cooler for my 4T65E in my 2004 Impala. The rubber parts of the factory trans cooling lines are dry rotted pretty bad, so I felt it best to install barb fittings and run new hose to the cooler rather than splicing.
Found that there was a check valve in one of the transmission fittings.
It was my understanding that the check valve is internal to the transmission on 2004 and later models. I also found that once I removed the fitting, a bit of fluid came out, but the transmission did not continue to drain fluid from the hole where the fitting was. Maybe my transmission ALSO has the check valve in the channel plate, and I don't need the check valve fitting?
Both fittings use the GM quick disconnects on the line side. I kept the factory lines in place (just disconnected from trans) so I can put everything back if need be, and try something else.
Can someone chime in and give me some direction?
