[CalgaryZL1]

Originally Posted by Rwhp042

Yep, I changed mine at the higher temps. It was difficult getting the trans to that temp by power braking. That may be why they changed it. May be a little under filled now. Looks like it needs to be put back on the lift and checked at this temp. I’ll see how much fluid it takes.

That is why I built a drain and fill pan so I can just go by volume that came out when doing a service because I could never get my transmission up to the old check temperature and there’s no way I was doing the brake torque process

[CalgaryZL1]

Also, depending on the year of your car you have to pay attention to the what the internal thermal bypass valve is set at
Note: This vehicle is equipped with an internal thermal bypass valve, located inside the valve body,
2022 service bulletin “the transmission fluid level should be checked only after the TFT has reached or exceeded an operating temperature of 70°C (158F). Once the TFT has reached or exceeded 70°C (158°F), then you can check the fluid level.”

[cdb95z28]

The difference in volume that I removed from the low temp procedure (173*) to the higher temp procedure (207*) was exactly 1 cup of fluid.

[Rwhp042]

Originally Posted by cdb95z28

The difference in volume that I removed from the low temp procedure (173*) to the higher temp procedure (207*) was exactly 1 cup of fluid.

1 cup = .25 quarts. Online calculators show approx .2 quarts using thermal expansion of oil so that is pretty close. I would think ULV would be slightly less. You used the earlier high temp procedure to fill yours?

[cdb95z28]

I did the low temp procedure and had a few odd trans events during my last track day in an extended session (elevated temps). Other sessions were ok. I have a track day on Wednesday with the higher temp procedure.

[Slurpee]

Originally Posted by cdb95z28

I did the low temp procedure and had a few odd trans events during my last track day in an extended session (elevated temps). Other sessions were ok. I have a track day on Wednesday with the higher temp procedure.

What were the the odd trans events that you were having? I had my trans drained and filled at the dealer prior to my last event and I also had trans issues. It was short shifting, entering / exiting performance shifting mode. It was also a hot track day.
After the issues, I brought it into the dealer, which is where I found out about the new, lower drain and fill temp / fluid fill check. A TAC case was opened with GM engineers for the problem.

[CalgaryZL1]

Originally Posted by Slurpee

What were the the odd trans events that you were having? I had my trans drained and filled at the dealer prior to my last event and I also had trans issues. It was short shifting, entering / exiting performance shifting mode. It was also a hot track day.
After the issues, I brought it into the dealer, which is where I found out about the new, lower drain and fill temp / fluid fill check. A TAC case was opened with GM engineers for the problem.

I have read that some are going with 1LE pan with the shorter stand off tube for the heavier track use, that might help reduce the chance of overfilling with all the different level check temperatures changing over the years

[Slurpee]

Originally Posted by CalgaryZL1

I have read that some are going with 1LE pan with the shorter stand off tube for the heavier track use, that might help reduce the chance of overfilling with all the different level check temperatures changing over the years

Now that I have quickjacks and can service it myself, that’s the plan

[arpad_m]

I may be out of touch with reality, but this requirement to keep a fluid within a certain narrow, non-room achievable temperature range for replacement feels very odd in the 21st century.

[Slurpee]

Originally Posted by arpad_m

I may be out of touch with reality, but this requirement to keep a fluid within a certain narrow, non-room achievable temperature range for replacement feels very odd in the 21st century.

The replacement procedure is absurd. For essentially a track car, it’s even crazier to me there isn’t a built in drain plug.

[CalgaryZL1]

Originally Posted by Slurpee

The replacement procedure is absurd. For essentially a track car, it’s even crazier to me there isn’t a built in drain plug.

That could be the exact reason why GM didn’t want to put in the dipstick and a drain plug because the A10 is used for so many different uses that it becomes confusing to get the proper fill level when one person is driving a daily and the other person is track driver with over 100° temperature swings depending on your application. That’s the only thing I can think of.

[arpad_m]

Originally Posted by CalgaryZL1

That could be the exact reason why GM didn’t want to put in the dipstick and a drain plug because the A10 is used for so many different uses that it becomes confusing to get the proper fill level when one person is driving a daily and the other person is track driver with over 100° temperature swings depending on your application. That’s the only thing I can think of.

Sorry, I'm not following this, we are talking about post-assembly fluid replacement and not design parameters or capacities.

Does the desired total amount of trans fluid vary depending on the use of the car? No way, because this is completely unpredictable; however, if it's the same quantity for every unit, the replacement procedure should also be the same.

I must be missing something obvious (or sinister, heh).

[MT-SS1LE]

Originally Posted by CalgaryZL1

That is why I built a drain and fill pan so I can just go by volume that came out when doing a service because I could never get my transmission up to the old check temperature and there’s no way I was doing the brake torque process

That's pretty cool. Did you do it yourself or have a machine shop do it? I searched, but there doesn't appear to be an aftermarket pan for the Camaro with 10L80 tranny. Ridiculous that Chevy didn't put a drain plug on it considering many track the car and will be doing frequent fluid changes.

[Kamero6]

Yikes, VW has the same system and I had to do it 3 times until I got it right.