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4l80e super slow kick down

Old 01-12-2019, 10:01 PM
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Default 4l80e super slow kick down

02 4l80e was poping code for shift sol b. Changed the a and b solenoid and still has the same problem also if I go wot it takes 10+ seconds to kick down to second or first how probable is it that the wire harness is bad? 4>3 kick down does fine
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Old 01-13-2019, 01:16 AM
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Will also add, manually down shifting makes no difference
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Old 01-14-2019, 08:13 AM
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How probable is it that you've done any of the following
-scanned codes again
-used a good scanner to watch what is being commanded by the PCM
-done a pressure test

Super vague questions like yours will end up in random guesses from people that don't know what they're talking about
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Old 01-14-2019, 10:12 AM
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Cleared codes and still says solenoid b stuck. P0756. I can clear the code, take off from a stop and get all the way to 4th gear and aslong as I dont go back below 3rd it wont trigger, but as soon as it commands 2nd it throws the code. I can watch the scanner command 2nd when decelerating or when it needs to kick down but it takes 10+ seconds for it to get in 2nd and then throws the code.
I have not checked the pressure. Still need to find a pressure gauge
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