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I did the same. It’s been 5,000 miles since. Happy customer.

I havent seen any reason for dual injection on my gen5 motors. I’ve had the intake manifold off multiple times for porting and msd etc 75,000 miles on a ltx and a 175k on truck

This seems correct. More time during cold start to get the cat warm as the turbo takes some of that heat for itself, but nice during a long high load condition reducing COT powerloss

Chatgpt agrees 12 quarts of ATF at 70°F expands to about 12.8–12.9 quarts at 210°F, an increase of roughly 7%

Did this ever happen?

Ive noticed this as well. It went away after a while and didn’t come back. Maybe the corrosion locks it in there and stops it from jiggling. Good luck.

Are you running 87 octane? If so, throw some premium in and see if it goes away

No tranny relearns

Get a tape measure and measure the height of the side with the hole and the opposite closed side.

U can measure each end to see if theyre different. Its getting cold here right now but saw youre in canada so that cant be better

I cant remember if theyre tapered

I have to check but i thought hole should face back

No ones using the oe lockable underseat area?

Does your truck have auto 4wd?

I agree. I wouldn’t change the fluid at that mileage either way. There is no forcing though, the pump in the trans is the only thing moving fluid…like it always does. I get your point it does depend of the competency of the mechanic to set the machine dial to flow and not flush.

Does flashing the converter a bit work on these?

That’s what I ask for. Fluid exchange. same pressures and direction as the trans sees every day. Pressure flush, reverse flush = bad. I don’t think a dealer would even do those if you asked. A lube shop…yes.

When the dealer does it, most of the fluid gets changed. The cooler, lines, and trorque converter too. Pan drains will need increased frequency to get the % of fresh fluid up there. Pick your poison

I might be crazy but if your shifting is rough do a little time in 4A if you have it so it can learn. It might be impacting 2wd shifting. I need more time to confirm but I did an adapts relearn after my trans fluid change and it didn’t settle down for a few weeks until I went into 4a. I need...

X2. It’s really the better daily tune of the two.