Re: OT GM 700R4 Tranny problem

Posted by D13 on March 02, 2007 at 16:49:51 from (216.234.120.47):

In Reply to: Re: OT GM 700R4 Tranny problem posted by jdemaris on March 02, 2007 at 13:50:30:

It's a relative ratio not a real number.
4= 4spd
L = longitudinal
80 = light truck capable

So a 3L60 would be a high capacity 3 speer transaxle.

700 after 87 was a stout piece, before that the pump rings would blow.

If you have both direction and the engagement is good (i.e. reverse is not unusually soft or first unusually harsh), look at the TV cable (should have light drag when pulled at the pump with the endinge off and more when running) then I would go after the governer. Plastic gear failure is a known issue.

If governer looks good, try this. Run in D1 up to ~30MPH (no the 6.2 wont be happy) then let off the throttle and shift to D3. It should shift to 3rd. If so you've lost 2nd rear or the 1-2 shift valve is frozen in the valve body. EIther way it's off to the shop.

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