GM Drivetrain & Suspension Chassis | Transmission| Driveshaft | Gears/Rear End/Differential | Traction Aids

4l80e problem

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Old 01-12-2010 | 09:55 PM
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Default 4l80e problem

For some reason when I stop my truck seems to be bogging down like the converter is locking up.
The problem only seems to happen after the trans is warmed up or driving for about 20mins.
I have replaced the filter and fluid in the trans, also replaced the lock up solenoid with no luck yet.

Got some vids for you guys so you can see what im talking about







this vid is with the trans harness unplugged, same problem.

Old 01-12-2010 | 10:00 PM
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I think you need to raise your idle in drive in the tune.
Old 01-12-2010 | 10:02 PM
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Originally Posted by GMCtrk
I think you need to raise your idle in drive in the tune.
but its been fine for the last year.
Old 01-12-2010 | 10:06 PM
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Originally Posted by Silverado_SS_04
but its been fine for the last year.
Didnt you just swap in a 6.0?
Old 01-12-2010 | 10:06 PM
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Just seems like a tight converter, I think some tune work would help.
Old 01-16-2010 | 06:04 PM
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There's something wrong with that converter. They're not supposed to sound "crunchy".
Old 01-17-2010 | 04:09 PM
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im going to swap the converter back to my old 2200stall.
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