decode 700R4
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Junior Member
Joined: Jan 2018
Posts: 2
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From: Texas
Car: 82 C10 SWB
Engine: 350
Transmission: 700R4
Axle/Gears: stock
decode 700R4
can anyone tell me what code TU is on a 700R4 please? my full code is 8TUM230H
8=1988
TU=???
M=700R4
230=230th day
H=2nd shift
8=1988
TU=???
M=700R4
230=230th day
H=2nd shift
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Joined: Sep 2009
Posts: 1,591
Likes: 5
From: WI.
Car: 1987 iroc
Engine: 383 TPIS intake, Dyno Don headers
Transmission: 700R4 w/Pro-built Auto/transgo 2-3
Axle/Gears: 3.27/3.70 borg warner 9 bolt
Re: decode 700R4
According to this, TU is the model? Not sure what that means though. http://www.technicalvideos.com/what_year_700R4.phtml http://www.ls1lt1.com/forum/attachme...1&d=1302911286
Last edited by red rock; Jan 15, 2018 at 07:25 PM.
Supreme Member
iTrader: (2)
Joined: Sep 2009
Posts: 1,591
Likes: 5
From: WI.
Car: 1987 iroc
Engine: 383 TPIS intake, Dyno Don headers
Transmission: 700R4 w/Pro-built Auto/transgo 2-3
Axle/Gears: 3.27/3.70 borg warner 9 bolt
Re: decode 700R4
That is good information. 
Junior Member
Joined: Nov 2016
Posts: 89
Likes: 6
From: So Cal lower desert
Car: 14 & 96 Camry's, 68 C10,70 Z28
Engine: Depends what vehical I'm driving
Transmission: Also depends which vehical
Axle/Gears: Also depends on vehical
Re: decode 700R4
Try calling your local GM Dealer parts counter person, GM built it and they can answer what ever questions you have about it.
I used them to find out what mine was, 2FTM= 1992 Firebird Formula 5.0 w/TBI 4L60 trans (700R4 family)
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Junior Member
Joined: Jan 2018
Posts: 2
Likes: 0
From: Texas
Car: 82 C10 SWB
Engine: 350
Transmission: 700R4
Axle/Gears: stock
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