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Reluctanse
I'm Awesome
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Oregon
Joined
Jan 21, 2017
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May 7, 2024
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Reluctanse
reacted to
NickTransmissions's post
in the thread
4L80 1-2 hard shifting now all of a sudden
with
Like
.
Check live data streams for the trans and torque converter as well as engine management sensors like the throttle position sensor. Also...
Feb 25, 2024
Reluctanse
reacted to
NickTransmissions's post
in the thread
4L80 1-2 hard shifting now all of a sudden
with
Like
.
If he has high line pressure, it will show up at idle- he can test this at home. Worn boost valve/sleeve is the most common cause (and...
Feb 25, 2024
Reluctanse
replied to the thread
4L80 1-2 hard shifting now all of a sudden
.
OK we might have some good news here. Hooked up HP tuners and set up some more throttle positions PIDs... it was set up for my 2000...
Feb 25, 2024
Reluctanse
posted the thread
4L80 1-2 hard shifting now all of a sudden
in
Transmissions
.
Ok not a GMT400 but- Wife’s 2007 Suburban 2500 with 6.0/4L80 started shifting hard been 1-2 recently, during normal driving. Trans was...
Feb 24, 2024
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