700R4 1984-87 GMC PICKUP wiring - Hot Rod Forum : Hotrodders Bulletin Board
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
User Name
lost password?   |   register now

LinkBack Thread Tools
  #1 (permalink)  
Old 06-02-2005, 02:30 PM
Registered User
Join Date: Jun 2005
Location: Indiana
Posts: 1
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
700R4 1984-87 GMC PICKUP wiring

Can anyone tell me what the wiring schem is for a GMC pickup with a 700R4 tranney it has 3 wires in a plug on the drivers side. I need to know what goes were and how they are controlled. Resently droped new motor in with blowe etc use to to be TBI I am no longer using the computer for anything but it is still in the truck. Any help would be great thanks Willie

Reply With Quote Quick reply to this message
Sponsored Links
  #2 (permalink)  
Old 06-03-2005, 04:54 AM
astroracer's Avatar
Last wiki edit: Crankshaft Coalition Wiki Last photo:
Join Date: Nov 2003
Location: Mid-Michigan
Posts: 2,310
Wiki Edits: 1

Thanks: 19
Thanked 198 Times in 180 Posts
You need a torgue converter lock-up kit. A number of companies make them or you can do a search and find a couple of DIY sites. TCI & Painless both have nice kits that you can get through Jegs or Summit.
This is off TCI's site...
Universal Lock-up Kit
Installation of this kit makes retrofits into non-ECM 700R4 or 2004R vehicles a snap. System allows automatic operation of the TCC in 4th gear under stable engine operation, and disengages the clutch when accelerating or down shifting. Also provided in the kit is a manual override option. Constructed from OEM connectors and oil resistant wire, we install this kit in all our complete 700R4 & 2004R StreetFighterŪ Transmissions.

Description Part No.
Lock-up Wiring Kit 376600
Replacement 2-wire TCC Solenoid for 2004R/700R4 376601
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 06-03-2005, 07:10 AM
TooMany2count's Avatar
A Half Crippled Old SOB....
Last wiki edit: GM RPO build codes Last photo:
Join Date: Jan 2003
Location: Cahokia,IL..... Donate Blood Products & Sign your DONORS CARD
Posts: 807
Wiki Edits: 5

Thanks: 0
Thanked 1 Time in 1 Post
it was my understanding the early 700R4's are a little different then the later model ones. i DO know the 84's-700R4's use NO COMPUTOR & the early 700R4's are suppose to be JUNK, even though i put 250,000 harddd miles on mine though. so be sure of what year u have b4 buying anything...joe

here's some info on them w/wiring
700R4 info

another page
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 06-03-2005, 08:14 AM
Crosley's Avatar
Global Moderator
Last wiki edit: T-350 rebuild tech
Last journal entry: 1962 Morris Minor 1000
Last photo:
Join Date: Nov 2002
Location: ... USA
Posts: 9,244
Wiki Edits: 1659

Thanks: 945
Thanked 289 Times in 255 Posts
the wires to the tranny are the same through those years. Wire "A" is 12 volts with ignition switch "ON"... Wire "D" is ground. The wires inside the tranny pan are vastly different in the 84 - 87 years.

Do you know what year your truck is? You say "used to be TBI"... 84 trucks were not EFI motors.

The lock up kit as suggested would be a good idea

this goes back to the question stu asked alot... " year , make and model ? "
Dont worry how old you are... it is the mileage on your body that adds up.
Reply With Quote Quick reply to this message

Recent Transmission - Rearend posts with photos

Quick Reply

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:
Please enter a password for your user account. Note that passwords are case-sensitive.
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:
Please select your insurance company (Optional)


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.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools

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
Trackbacks are On
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
700R4 fitting post 87 drum to pre 87 box eliotmansfield Transmission - Rearend 4 05-10-2005 08:02 AM
700r4 wiring questions murrsue Transmission - Rearend 4 02-04-2005 10:09 PM
Wiring a GMC Rally Wagon for a stereo? |DyInG_FeTuS| Electrical 2 10-30-2003 09:53 PM
2 pc.driveshaft 87 GMC? project69ss Transmission - Rearend 4 02-19-2003 10:44 AM
87 s15 v8 wiring gogreen44 Electrical 1 11-11-2002 04:36 PM

All times are GMT -6. The time now is 12:59 PM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright Hotrodders.com 1999 - 2012. All Rights Reserved.