X-Raid

Thanks for the replies. I was doing it on level ground, no lift. I did see the fluid transition from the steady stream to the thinner stream at one point, I just assumed it was supposed to get to more of a drip. The last time I topped it off (a few hours ago) I put the check plug back in as soon as it started to trickle. I took it for a test drive and it seems to be shifting well. I didn't notice the shudder, tomorrow on my way to work will be the real test for that though. I was really surprised at how dark the fluid was. No burned smell, but it pretty much looked like used motor oil.

I have a 2022 Sierra, 2.7L Turbomax with MQE 8 speed, 97k miles. Purchased a few weeks ago and noticed that I had a slight shudder when cruising at highway speeds so I wanted to change the trans fluid. I found multiple threads on here about how to go about this process and felt reasonably confident about performing this job the correct way. I dropped the pan last night, drained the fluid and changed the filter and then installed a 265-931 Dorman pan with a drain plug so that I could drain it easier next time. I filled with about 7. 5 quarts of Mobil 1 Blue label LV ATF HP, turned the truck on and ran it through each gear selector for 3 seconds each and then let it get up to temp. When I took out the check plug bolt to verify the fluid level at around 98F,the fluid streamed out and never slowed to a drip even after several minutes of it draining. Im not sure how much exactly drained out, but it was at least a quart or two. It was still draining once the trans got up to 115F so I turned it off and figured I'd recheck it in the morning so that it had a chance to get back into the correct range. I checked it this morning once it got up to the 95F temp again, and there was no drip at all, so assumed it drained a little too muxh last night. With it running I pumped about 3/4 of a quart through the fill tube until it started to come out of the drain plug again, but it still continues to just steam out and never slows to a drip. Am I doing something wrong here? I feel like it should be at the correct level, but the fact that when I check it and it's streaming out makes me think something isn't quite right.