PerformanceTrucks.net Forums - 4l80 2wd no gears no neutral no reverse

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Victor187

12-03-2017 10:08 AM

4l80 2wd no gears no neutral no reverse

I sent my 2008 sierra 78 mm single turbo to get 4l80 swapped and it ran for too days and the 3 day it got stuck in 2 nd gear and didn't want to shift and parked it and turned it off and turned back on and nos doesn't have reverse or neutral and doesn't have and gear

turboal1

12-03-2017 02:17 PM

trans

Was the trans freshly rebuilt ? was the PCM reprogrammed ?

Victor187

12-04-2017 08:36 PM

Quote:

Originally Posted by turboal1 (Post 5425497)

Was the trans freshly rebuilt ? was the PCM reprogrammed ?

Yeah yeah it was freshly rebuild , I scanned it with computer and it said it didn't have any psi

brandon6.0

12-04-2017 10:44 PM

front pump could have took a shit.

06murder

12-06-2017 08:05 PM

Valve body. May have put check ball in wrong spot

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