Hot Rod Forum : Hotrodders Bulletin Board - Reply to Topic
Hotrodders.com -- Hot Rod Forum



Register FAQ Search Today's Posts Unanswered Posts Auto Escrow Insurance Auto Loans
Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Transmission - Rearend> 4l60e no OD or D
User Name
Password
lost password?   |   register now

Thread: 4l60e no OD or D Reply to Thread
Title:
  
Message:
Trackback:
Send Trackbacks to (Separate multiple URLs with spaces) :

Register Now

In order to be able to post messages on the Hot Rod Forum : Hotrodders Bulletin Board forums, you must first register.
Please enter your desired user name (usually not your first and last name), your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Additional Options
Miscellaneous Options

Topic Review (Newest First)
03-07-2010 10:35 AM
jbroome2 If the sprag were bad wouldnt it do it all the time? Its just weird after it has moved in D or OD it works great. Ill have to check pressures. and as far as a history I dont know I just got the truck. Thanks for your help this has been driving me crazy.
03-07-2010 10:29 AM
Crosley I would be interested in what the pressure of main line is doing when the trans will not move in OD after the shifter is placed there from park.

Pressure is boosted when t he shifter is in manual 1 gear.

What is the history of the trans in the 2000 truck? Mileage? Recent repair or rebuild? Sounds like you've had the trans out and apart a couple of times

A pump with excessive clearance can actually stop pumping when a load is applied like shifting from park into gear.

There may also be a problem with the forward sprag assembly. I had a customer that claimed our sprag parts were bad that he had just purchased. The problem was he had put a new sprag against worn out sprag races and took out the new sprag.
03-07-2010 07:19 AM
jbroome2 Once you come out of park you have to go to first gear, then once rolling you can put it in OD and it will shift on its own if you come straight out of park to OD it just sits there.

When you come to a stoplight from being in OD you dont have to do anything you can leave it in OD and it will take back off.
03-07-2010 07:16 AM
Crosley
Quote:
Originally Posted by jbroome2
First let me start off by saying hey, you have a wonderful site with lost of great info. I have searched and cant find anything so here goes. My 4l60e has no OD or D until you put it in 1st and get going then you can put it back in OD and it does fine, you can then come to a stop take back off anything untill you go to P,N,or R. After you go into P,N, or R you have to go back to 1st until you get going once again. I have changed the input sprag, low roller clutch and the shift silenoids with no change. Thanks in advance for any help.

by the way this is a 2000 GMC Sierra.
Please clarify an item here for me:

Do you mean the vehicle will take off from a stop with shifter in OD and the trans shifts to 2nd gear , but will not shift to 3rd gear or OD ?

OR the vehicle will not move from a stop with the shifter in OD or D ? .. You must place the shifter into 1 gear so the vehicle will move from a complete stop?

Two different causes and effect . I want to make sure I understand your problem

03-07-2010 06:36 AM
jbroome2
4l60e no OD or D

First let me start off by saying hey, you have a wonderful site with lost of great info. I have searched and cant find anything so here goes. My 4l60e has no OD or D until you put it in 1st and get going then you can put it back in OD and it does fine, you can then come to a stop take back off anything untill you go to P,N,or R. After you go into P,N, or R you have to go back to 1st until you get going once again. I have changed the input sprag, low roller clutch and the shift silenoids with no change. Thanks in advance for any help.

by the way this is a 2000 GMC Sierra.

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


All times are GMT -6. The time now is 09:56 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
Copyright Hotrodders.com 1999 - 2012. All Rights Reserved.