4T45E Rebuild 

I waited 71 minutes to see how he would install the trans cooler line gaskets…

Great video, but I was wondering if you could help me. I was finishing tightening down the last bold of the side case after changing some solenoids and heard a pop. Then I looked at my axle seal and there is a spring stuck in between the seal and axle about the thickness of the "manual valve link". What could this be? I have a photo of it as well.

Heya, I have a 4t45e that has lost 4th gear. I tore it apart, and both the 4th gear clutchplates and the metal plates are burnt. Can I continue using the metal plates with said hotspots, or should I replace them? The rest of the transmission is ok though. Also, what size are the checkballs for the valve body? I removed mine to clean it and I lost one.

How are you dear. I have a 2008 Cobalt with a 2.2 engine and an automatic transmission. There is a problem: when I start driving the car, the transmission gear becomes hard shift after driving for 5 minutes and then When I turn off the car and restart it and drive it again, the transmission becomes normal and smooth shift. But after continuing to drive the car for 10 minutes, the transmission returns to becoming hard shift, knowing that there is a code p1811(maximum adapt and long shift). what do you think about this problem?

Hello I replaced the shift solenoids on one of these transmissions and prior to this everything worked fine however after doing it and ensuring fluid is topped off I started car and at first it wouldn't move at all after a while though the car did move however it goes forward in drive neutral and reverse. I don't know what would cause reverse to drive forward but hoping you may know if the manual valve could cause this? My linkage came off during installation and I reattached it but I didnt know which tooth the little gear the linkage attaches too mattered. Any input would be greatly appreciated 🙏🏽 I cannot find any information online about the fix only that something similar has happened to others after the same procedure

I broke the reverse band in my tranny. We are putting it back together but theres not enough room for the final support plate to fit. We are about 1/4 inch shy. Any ideas?

Looking to get my Pontiac tuned here soon and this popped up in my recommendations tab, what is RU-vid trying to tell me!? 😂 yes mine has this trans in it atm, I’m shooting for 250-270hp before I swap for a manual, what are your thoughts?

Hello Today I have replaced and change parts out of this same 4T45E transmission and I have watched your video on how to rebuild the 4T45E Transmission. I went to start the car and the transmission didn't come on nor the wheel start spinning when shifting the gear. Do you know if the transmission control module have to be relearn or something else?

Hey Tom nice work where are you located? I have a 2010 4t45e that I want to install a lsd so I get get more traction on the track could you help me out.

Hey Tom, I just had a 4T45-E that was making a grinding noise in drive. Took the pan off and found lots of metal shavings in there. Decided to follow your disassembly video and found the differential planetary gears were stripped. Turns out that when the LH axle seal and cup was replace, they pulled the entire shaft out but the inner C clip broke in half and that half stayed in the transmission. This was a few months ago so until this week 3/6/20 the grinding noise started. Could the piece of the C clip that fell off the shaft cause the gears to strip? I thought it would have fallen into pan and got caught in the magnet.

Great video! Learned LOTS! I'm not longer afraid of a transmission breaking!!!

Really helpful video. Thank you for sharing your craft.

Great video!! Happy birthday!! Here in Brazil, everyone rests the discs in the fluid before assembly. Is this necessary? If so could you teach me your technique?

Am currently rebuilding my own 4t45e and have found your videos really helpful, only question I have is what you're putting on the back of the bearings and if it's necessary, keep up the great work Tom!

This just helped me so much. I need to do this my 2010 G6 with the 4t45e. Can you post links to the seal drivers and tools you used?

Link to all the replacement/rebuild pack?

Hey Tom, I have watched your videos quite a bit and they have been extremely helpful. I cant tell if my case bushing is causing my axle to wobble or if it is my spider gears in my final drive. Ive torn the the transmission down per your videos. Yes the axle was replaced in the vehicle and I tried every external possible solution before digging in to the trans. I found that there was excess wobble in my extension shaft when in the diff. Once everything was removed the case bushing looked to be okay even though i have a new one. It just seems as though the gear that rides on my sun gear in my diff has extreme up and down play and my whole diff wobbles quite a bit now that it is removed. The gears have some wear but not too bad and the rotational play /backlash looks alright/normal. It is just the whole darn thing wobbles quite excessively on the axis of the extension shaft on the drivers side. Any advice would be greatly appreciated. Thanks for sharing your videos with us!

Hey Tom,

Juat got an 07 saturn ion that i replaced the motor and trans in from a car with 170k on it. After about 150 miles, i noticed that when accelerating and im under 60mph in 3rd or 4th gear, it kinda stutters slightly like it has a misfire, but no engine codes are coming up. But once im cruising, there's no issue.

Hey Tom,