TCi 376600 Instructions Manual

TCi 376600 Instructions Manual

Universal lock-up kit for 700r4 and 2004r

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Universal TCC Lock-Up Kit for 700R4 and 2004R
This kit enables hands-free, automatic activation of the Torque Converter Clutch (TCC) along with the
option of manual control.
®
TCI
376600 Kit Contains:
Qty.
Description
One (1)
Internal Wiring Harness
One (1)
External Wiring Harness
One (1)
Vacuum Switch
One (1)
Fourth Gear Pressure Switch - 2 terminal, N.O.
Two (2)
Splice Connectors
One (1)
#4 Machine Screw
Step 1 — Drain transmission oil pan. You will need a pan to catch fluid. Remove transmission oil pan
bolts. When removing bolts, remove so pan will not drop completely off. Instead it will be held in
place so that one side will allow the fluid to be drained. After the fluid has drained, remove the rest of
the bolts and pour out the remaining fluid. If your transmission did not come with a drain plug, you
may want to install a TCI
off. Remember To Dispose Of Used Oil In An Environmentally Safe Way.
Step 2 — Remove original internal wiring
harness.
Carefully
connectors from the switches. Remove the wires
from the clips and unplug the wiring harness
from the connector near the detent roller spring.
Pry connector tab away from the plug and pull
the plug down. Do not pull on the wires.
Step 3 — Based on your application, find the
wiring diagram to determine the proper fourth
gear pressure switch location. See Figures 1, 2
and 3. Install the switch and torque to 8 foot-
pounds. Additional OEM switches may be left
in place even though they will not be utilized.
Toll Free: 1.888.776.9824
www.tciauto.com
®
TCI
®
805800 universal drain plug kit into your pan now that you have the pan
disconnect
the
wire
376600
Figure 1: 700R4 Street/Strip Wiring Diagram
®
TCI
Automotive
151 Industrial Dr.
Ashland, MS 38603
Phone: 662.224.8972
INSTRUCTIONS
Part # TCI-9006
Revised 9/6/2016
1

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Summary of Contents for TCi 376600

  • Page 1 If your transmission did not come with a drain plug, you ® may want to install a TCI 805800 universal drain plug kit into your pan now that you have the pan off.
  • Page 2 OEM case connector. To correct this problem, obtain case connector number 8634383 from a GM dealer. This will allow the TCI harness to snap into place. Using 18-gauge wire, run a 12-volt source to the red wire on the harness (Terminal A).
  • Page 3 TCC system through a second dash mounted Figure 4: External Wiring Configuration ® toggle switch between to the red wire on the TCI external harness (Terminal A) and the switched 12- volt source. Now, you may manually turn the lock up system completely on and off.
  • Page 4 (ECM)? A: With the 376600 installed properly your ECM will no longer interface with the transmission. Do not attempt to plug the OEM wiring harness from your computer into the transmission with this kit installed! It is not compatible! The ECM will continue to control the vital engine functions even though it is no longer controlling your torque converter lockup.
  • Page 5 An easy method to check for a short in the system without first ® removing the transmission oil pan is to disconnect your power supply from the red wire on the TCI external wiring harness and measure the resistance between the red and the green wire. It should be between 24.5...
  • Page 6 Have any problems diagnosed and repaired by a qualified technician immediately. Social Media ™ ® Stay up-to-date with the latest TCI and COMP Performance Group company and product information by following us on any of our social media platforms. ®...
  • Page 7 There are no implied warranties of merchantability or fitness for a particular purpose. There are ® no warranties which extend beyond the description of the face hereof. TCI Automotive will not be responsible for incidental and consequential damages, property damage or personal injury damages to the extent permitted by law.

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