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Chevrolet Express
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4L80E Trans Pump Questions

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Old Mar 30, 2020 | 7:20 AM
  #1  
Squidley's Avatar
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From: Texas
Default 4L80E Trans Pump Questions

Good Morning,
I am in the middle of a rebuild of my 4L80E on a 2005 Chevy Express van. I have been following a tutorial for the complete teardown and subsequent rebuilding of it. I have come to a spot where I am dealing with rebuilding the pump on it. I have purchased a reman pump, but had to remove all the valves from my old one. I have confirmed with the place I purchased it from that it is the correct part number (34500ED) for my model year transmission by confirming the cast numbers on both halves of the pump assembly. What I need is a place to purchase the valves that are inside the pump, TCC enabling valve, TCC Valve, and the converter limit valve. Can anyone help me out with where I can purchase these as the ones out of my old pump do not fit properly, thanks in advance for any help.
Brad
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Old Mar 30, 2020 | 2:22 PM
  #2  
mountainmanjoe's Avatar
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a web search reveals an abundance of online shops with parts.

including some in Texas where you are

https://www.nationaltranshouston.com/
https://southhoustontransmissionshop.com/services/

Last edited by mountainmanjoe; Mar 30, 2020 at 2:29 PM.
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