2007 chevy silverado 3500 4l80e p0894

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craigrushton
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2007 chevy silverado 3500 4l80e p0894

Post by craigrushton » Mon Feb 12, 2018 1:22 pm

had this one just come in po894 component slipping i still have to drive it freeway speed i am thinking tcc issue, I had one very similar to this a few years back low miles also where the tcc lining came apart and there was even a tsb for it but on this one i can not seem to find anything. if anyone has info on what they have ran across or if there was in fact a tsb for this please let me know this is a very low mileage vehicle only 30k on it the other i had was low miles also about 50k. thanks

carod
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Re: 2007 chevy silverado 3500 4l80e p0894

Post by carod » Tue Feb 13, 2018 8:49 pm

GM has had convertor problems on those units. I think you are right a bad convertor.

craigrushton
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Re: 2007 chevy silverado 3500 4l80e p0894

Post by craigrushton » Fri Feb 16, 2018 12:38 am

it was a converter i found the tsb in all data it was under transmission tab tsb not in general tbs section. commanded tcc on could hear it click on and off test drove it could see tcc commanded to 100% no rpm drop. Installed new converter test drove it tcc solenoid applied got my rpm drop

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