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-   -   700R4 is stuck in first gear. (

chevymanwithaplan 10-27-2012 07:28 PM

700R4 is stuck in first gear.
Can anyone help me out. my 1990 K2500 4X4 is stuck in first and I am looking for tricks ideas and maybe some help. I can give a complete run down of what everything is doing it is needed to know.
Thank you

blacklabzeke 10-27-2012 08:24 PM

Check the gear (plastic) on the governor and the valve inside the governor asembly.

Ruthlessmr 11-01-2012 07:58 PM

does it have reverse?

rustman 11-01-2012 09:38 PM

Check to see if the vaccum modulator hose slipped off. On my TH400 it is on the right side of the trans housing.

Ruthlessmr 11-02-2012 06:29 PM

if its a 700 there is no modulator

chevymanwithaplan 11-09-2012 11:09 PM

700R4 wont shift

Originally Posted by Ruthlessmr (Post 1605970)
does it have reverse?

Yes it has reverse and I adjusted the TV cable to its specks.
I bought a new govenor just have to put it in yet.

chevymanwithaplan 11-09-2012 11:14 PM

700R4 wont shift

Originally Posted by blacklabzeke (Post 1603983)
Check the gear (plastic) on the governor and the valve inside the governor asembly.

I bought a new govener and have yet to put it in. I hope it fixes the problem. Cause spending $50 to get a new govenor is pricey but did it anyways just got to drop the front drive shaft and put the new one in.

ASE Doc 11-29-2012 08:26 AM

It could also be a stuck 1-2 valvetrain in the valve body. I had one apart(cast iron VB) and cleaned up the 1-2 shift valve train then added lubeguard red to new fluid and it was fixed. I seem to remember another one with an aluminum valve body that needed to be reamed and an oversized valve installed.

chevymanwithaplan 12-03-2012 01:55 PM

I took it apart and bad news for me.....
I dumped $50 into a new govenor and pulled the pan to find my tranny fluid was black and there was tons of clutch pieces in the bottom of the pan. Now on to finding a good cheap used 700R4

chevymanwithaplan 12-03-2012 02:43 PM

How hard is it to rebuild a 700R4 from top to bottom. I have the OEM factory Books made for my 1990 chevy. But I have never rebuilt a tranny before and the book shows everything just looks complicated.

SSedan64 12-05-2012 05:51 AM

The 700R4 isn't the easiest Trans to start out with if you've never built one. I suggest investing in a Rebuild/Overhaul video and an ATSG Manual to help you along.
One tool that is needed is the rear clutch spring compressor tool and a good set of Lock-Ring pliers. Other things/tools can be used for most parts. Should replace all the Bushings, Trans Shop will do it fairly cheap.
Dana @Pro-Built can put together a good Build kit for you or other Co.'s
700R4 Transmission Parts GM Rear Wheel Drive
700R4 transmission parts 700R4 transmission kits

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