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Have not dropped the pan yet, likely this week.
No modifications to the engine or transmission, all stock.
The dealer tech only drove it a few miles, I don’t know if they put an real effort into diagnosing it. It’s likely they deemed it a torque converter since they fail at a high rate and just said ‘new trans’.
Local trans guy initially said torque converter but after a test drive, he hadn’t heard this issue before. He thought possible electronic issue in valve body.
Clutch pack is my UNEDUCATED GUESS....but a rebuild SB about 3200$
does it do that if you put trans in manual mode (manual mode prevents from switching back & forth to 4cyl mode)
when we first bought our 15' suburban with 5.3 it would have intermittent shuddering while driving on the highway. turns out it was the exhaust valve near the muffler that opens & closes when it goes into 4cyl mode. it has a spot where it can be blocked permanently open for test purposes. luckily the dealer we bought it from replaced the exhaust for us since we noticed the issue right away. not for sure if the 6.2 has the same style exhaust system with the valve but if it does may check that out.
Sadly No, 150k miles on this txAny chance your power train warranty is still in tact?
Remove transmission pan. Remove two bolts from the trans. rear mount. jack back of trans. up as high as it will go. Twist pan to left, comes right out.Sadly No, 150k miles on this tx