Tran/torque converter advice

Hi all,
2017 Tahoe premier 82500 miles. 5.3…6 speed
My question is what can I do to
Increase the longevity of my
Transmission and torque converter. This is the last truck
For this old man and I need
It to last along time
By the way afm off with a range
Module. Thanks in advance for
Any feedback/advice
Don’t really see a fluid/filter
In service records

I am hoping for longevity like you. I have had the Range disabler on for the last 4 years and a Mishimoto Transmission cooler for about the same amount of time since I purchased my 2016 Yukon in 2020 with 50,000 miles. The Mishimoto is pricier than most transmission coolers but you'll be hard pressed to find a more professional and thorough installation kit. My trans temp has not exceeded 170 degrees and that is towing a boat in Arizona in 110 degree weather. Also make sure your transmission fluid thermostat is either upgraded to the cooler one or just flip the internal pill in the existing one. I also purchased a transmission pan with a drain bolt for easy servicing. The cooler and cleaner you keep the trans the less likely problems will arise. Good luck.

CapnBob said:

2017 Tahoe premier 82500 miles. 5.3L … 6L80E
My question is what can I do to increase the longevity of my 6L80E and torque converter?

Click to expand...

You already disabled V4 mode, congratulations.
Change your ATF at least as often as the SEVERE SERVICE schedule suggests.
Address the ATF cooling situation as suggested by Rygrego.

Bump

Fluid is cheap compared to a transmission so I do a drain and fill every spring.

Bump

CapnBob said:

Hi all,
2017 Tahoe premier 82500 miles. 5.3…6 speed
My question is what can I do to
Increase the longevity of my
Transmission and torque converter. This is the last truck
For this old man and I need
It to last along time
By the way afm off with a range
Module. Thanks in advance for
Any feedback/advice
Don’t really see a fluid/filter
In service records

Click to expand...

I just posted my experience on my 2011 GMC Denali 6.2 Mine went 203,000 miles before I sold it a couple of months ago. For its entire life I used Amsoil Signature 5/30 oil and filters. Oil changed at 10,000 mile intervals, filters at 5,000 miles. ZERO oil usage between changes. Ran whatever transmission fluid the factory and the dealer put in it. I would put Amsoil AT fluid in it if I had to do it again. I did a major service (coolant, belts, hoses, etc. under hood at 100,000 miles. Never had to repair anything under the hood, including the transmission/torque converter, except for the first two driver side exhaust manifold bolts. Just sold it two months ago. If I had kept it another 100,000 mile service was due.

I never unhooked the V4/V8. I have no clue how that changes anything with the mechanicals if they don't get ripped out, which is a major operation.

Your 5.3 and 6 speed should do the same except your 5.3 should not break bolts.