1988 Sub Trans no forward or reverse gears

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1988 Sub Trans no forward or reverse gears

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Chevrolet Forum >> Chevy Trucks, Vans & SUV's >> Suburban >> 1988 Sub Trans no forward or reverse gears

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1988 Sub Trans no forward or reverse gears - 12/23/2007 12:37:24 PM

wep54

Posts: 3
Joined: 3/10/2007
Status: offline

1988 Suburban 350 4x4. Trans has no forward or reverse gears. Nominal amount of copper/brass shavings in pan. Grinds when put into park. Is there a possible fix without pulling the trans or do these symptoms indicate a rebuild? I assume this has a 700 R4. Thanks in advance.

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RE: 1988 Sub Trans no forward or reverse gears - 12/23/2007 7:44:51 PM

Gryphon

Posts: 38
Joined: 12/19/2007
Status: offline

Sounds like rebuild time to me. Be a good time to upgrade your 700R4 (or it may be a TH400?) to the newer sprage assemblies for greater strength...but it has lasted this long, I think it did good! How many miles on it?

Several things it could be. Best to just open it up; my guess is bands or seals, or both. How did it die? Did it go slow, or sudden?
Been a long time since I worked on an auto.

_____________________________

Rob
'99 Suburban 1500, 5.7 Vortec stock...for now.
'86 CJ7 daily driver, some mods, usualy dirty.

(in reply to wep54)

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