Time will tell as I perform fluid changes. The aftermarket PPE trans pan has a drain plug with large magnet, so I will be able to track the fines on the magnet. The issue with the 1/2 ton V8 models is there is NO WAY to drop the trans pan WITHOUT removing the drivers side pre-Cat O2 sensor and dropping the front of the exhaust off the manifolds. The drivers side cross over is right under the transmission pan and will not allow the trans pan to be dropped and removed without dropping the front of the exhaust. So this means most of these vehicles will never get a trans fluid or filter change!!!
Not sure you can even perform a flush/fluid exchange on these transmissions with the internal cooler loop thermostat??? The older the trucks get the harder it will be to get the exhaust nuts loose and off the studs without problems. I put a GENEROUS amount of Anti-seize compound on the exhaust studs so I can hopefully get the nuts loose and off the studs in the future. This is one of the reasons I went with the aftermarket pan with the drain, I will likely drain and refill the trans every other oil change because I doubt I will get more than 7 qts of fluid out of the pan and this pan hold an extra 2 1/2 quarts of fluid, the stock pan you would be lucky to get 5 quarts during a filter change.
What I can say is I finally had a chance to drive the vehicle about 2 hours round trip the other day, had to do an airport pickup of family members. So this was the first time to take about 30 minutes of non Interstate but road that are semi rural with speed limits up to 45 MPH. Then went out for about a 50 minute round trip this evening on all surface streets, some semi rural, some more suburban.
I can say I really like the final outcome of shift firmness, not too firm, but far less flare and overlap, shifting is crisp and deliberate and I like this a lot. I hate automatic transmissions that they slip and slide the shifts so much you can barely feel them, to me this is just wearing the transmission out. I think the changes are with a slight pressure boost and the new shift valves and the separator plates and a few valve body plugs with O-rings that reduce or eliminate any internal leakage.
Would love to know if NextGen spent a fair amount of time and testing or of they got it right out of the gate from prior knowledge? But so far I am liking the end product, not sure when my next 4-6 hour trip will be but this will be a good test along with the hills and inclines on a route I take fairly often, this will allow me to get a better feel for the final result. I would do this again in a heartbeat based solely on the shift feel from 1st to 5th gear because these transmissions are shifting in this range all the time and very quickly around town. Every time you come to a stop and get up to 25-30 MPH, this transmission is shifting at least 5 or more times. Think of the transmission wear and tear every time you take off from a start!
Get rid of the Auto Stop/Start or turn if off, run the transmission in L9 except for speeds over 50-55 MPH, change the engine oil every 4k miles, the trans fluid every 8k miles, and if you are lucky, maybe your engine and transmission will last over 100k miles. Unfortunately they do not build them like they did in 2005, my 6.0 Vortec with the 4L80 or 4L90 has over 275k miles and still going, I did not maintain it like I am taking care of the 2024, probably should have, but being up in the Mid Atlantic most of its life the 2005 rocker panels are quickly fading away, otherwise I would be nicer to the 2005, but at this point it really owes me next to nothing, every mile I put on the 2005 is a freebie IMHO.
Not sure you can even perform a flush/fluid exchange on these transmissions with the internal cooler loop thermostat??? The older the trucks get the harder it will be to get the exhaust nuts loose and off the studs without problems. I put a GENEROUS amount of Anti-seize compound on the exhaust studs so I can hopefully get the nuts loose and off the studs in the future. This is one of the reasons I went with the aftermarket pan with the drain, I will likely drain and refill the trans every other oil change because I doubt I will get more than 7 qts of fluid out of the pan and this pan hold an extra 2 1/2 quarts of fluid, the stock pan you would be lucky to get 5 quarts during a filter change.
What I can say is I finally had a chance to drive the vehicle about 2 hours round trip the other day, had to do an airport pickup of family members. So this was the first time to take about 30 minutes of non Interstate but road that are semi rural with speed limits up to 45 MPH. Then went out for about a 50 minute round trip this evening on all surface streets, some semi rural, some more suburban.
I can say I really like the final outcome of shift firmness, not too firm, but far less flare and overlap, shifting is crisp and deliberate and I like this a lot. I hate automatic transmissions that they slip and slide the shifts so much you can barely feel them, to me this is just wearing the transmission out. I think the changes are with a slight pressure boost and the new shift valves and the separator plates and a few valve body plugs with O-rings that reduce or eliminate any internal leakage.
Would love to know if NextGen spent a fair amount of time and testing or of they got it right out of the gate from prior knowledge? But so far I am liking the end product, not sure when my next 4-6 hour trip will be but this will be a good test along with the hills and inclines on a route I take fairly often, this will allow me to get a better feel for the final result. I would do this again in a heartbeat based solely on the shift feel from 1st to 5th gear because these transmissions are shifting in this range all the time and very quickly around town. Every time you come to a stop and get up to 25-30 MPH, this transmission is shifting at least 5 or more times. Think of the transmission wear and tear every time you take off from a start!
Get rid of the Auto Stop/Start or turn if off, run the transmission in L9 except for speeds over 50-55 MPH, change the engine oil every 4k miles, the trans fluid every 8k miles, and if you are lucky, maybe your engine and transmission will last over 100k miles. Unfortunately they do not build them like they did in 2005, my 6.0 Vortec with the 4L80 or 4L90 has over 275k miles and still going, I did not maintain it like I am taking care of the 2024, probably should have, but being up in the Mid Atlantic most of its life the 2005 rocker panels are quickly fading away, otherwise I would be nicer to the 2005, but at this point it really owes me next to nothing, every mile I put on the 2005 is a freebie IMHO.
