acmech87

https://www.gmupfitter.com/light-duty-vehicles/light-duty-2022/

Try this

As I was trying to look up the differences between the old design and new design I found this... The most common problem with the oil pump drive gears of the FORD 10R80 transmission and the similarly designed GM 10L90 transmission is transmission noise from the torque converter. But according to the assurances of the manufacturers themselves, the noise is associated with the design of the gear teeth, namely the rectilinear arrangement of the teeth. This tooth design is less durable compared to helical gears, since the contact patch in gears with a linear arrangement of teeth is smaller, which in turn affects strength. There are cases when the teeth on the drive gear are damaged, which ultimately entails the complete destruction of the gear. This problem is more common on transmissions installed on vehicles with diesel engines than on gasoline versions. After working on the mistakes, the manufacturer changed the type of gear from linear to helical. Helical tooth gears have a larger contact patch, which allows them to withstand greater loads with fewer teeth. This design is more reliable than linear gears.

Awesome, thank you! I just did a basic build sheet search online...

I just pulled my build sheet and it turns out I have the 8 speed not the 10 speed. Is this SB still applicable?

Likewise but also it was nice to be able to adjust my tire size so quick too. I cant imagine it would matter much with the throttle response set to 5 and how the transmission shifts. I think my transmission issues are unrelated to the pulsar though.

No overheat warnings at all. I wasn't religious in monitoring the trans temp but when I did it never went over 200. 202 may 205 was the highest probably. As for the aux water pump, that had been leaking over time and its being replaced now. I'm mistaken then, I thought it had a part in helping cool the transmission. ============= I just read over that service bulletin and I am now confident that is my issue. With this issue being on a SB, are they treated like recalls or is the cost of repair still on the customer?

I've had mine on with zero issues for a good bit as well until now. Hard to say if the issues I'm having are related to the pulsar. Did you do any transmission shift point changes?

I just made a post regarding my transmission issues... In the prior 2-3 weeks I had been noticing this same shudder a lot of you had mentioned. I didn't know of this new and improved fluid. I also heard that there was a redesigned gear or something for the 10 speed GM had done after issues with backorder delays...?

I just made a post regarding my transmission issues... In the prior 2-3 weeks I had been noticing this same shudder a lot of you had mentioned. I didn't know of this new and improved fluid. I also heard that there was a redesigned gear or something for the 10 speed GM had done after issues with backorder delays...?

I've had a slow coolant leak for awhile but couldn't locate the source of it until now. The aux water pump finally went bad. I had been keeping it on life support by monitoring the coolant levels and refilling as needed. After it finally went bad is when the transmission started making the god awful noise you hear in the Video. As soon as it started chattering I got off the road ASAP. The truck never went into limp mode, threw any codes, or had issues shifting. The noise was bit quieter when in reverse. I've identified the noise to be coming from the transmission. Looking for assistance in what the issue could be before I start dismantling.

Will do

So it looks like what happened is that the aux water pump went bad by leaking overtime and finally died. That system is tied into helping cool the transmission. That noise in the video is coming from the transmission, so Its at the dealer now being looked into.

No, I dont.

Engine oil is fine, just checked. It looks like the part I’m needing is the turbo intercooler pump.