C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

1985 TCC switch type

Thread Tools
 
Search this Thread
 
Old May 25, 2007 | 11:39 PM
  #1  
elkabong's Avatar
elkabong
Thread Starter
Pro
10 Year Member
 
Joined: Dec 2002
Posts: 603
Likes: 0
From: 84 383 XFire Chandler, AZ
Default 1985 TCC switch type

Is the TCC switch for a 85 normally open or normally closed switch? Is there a way to test/determine the switch type without dropping the pan?

I need to find out because there is a setting in the EBL (Embedded Lockers) settings. The ECM is a 8746 converted to use the EBL. TBI application for a 84. I just got the trans in and I dont want to damage anything.
Reply
Old May 26, 2007 | 05:26 PM
  #2  
CFI-EFI's Avatar
CFI-EFI
Race Director
10 Year Member
 
Joined: Sep 2000
Posts: 17,298
Likes: 33
From: The Top of Utah
Default

There is no TCC switch in the transmission. Therefore no need to drop the pan to test it. The trans contains the TCC solenoid which is activated by the ECM. The only TCC switch I am aware of is incorporated in the brake light switch. That TCC switch is NC. Unlike the brake light portion of that switch, the TCC side opens when you step on the brakes. It shows in your FSM wiring schematic.

RACE ON!!!
Reply
Old May 26, 2007 | 05:35 PM
  #3  
Pete K's Avatar
Pete K
Race Director
20 Year Member
Conversation Starter
All Eyes On Me
 
Joined: Feb 2004
Posts: 12,518
Likes: 19
Default

Originally Posted by elkabong
Is the TCC switch for a 85 normally open or normally closed switch? Is there a way to test/determine the switch type without dropping the pan?

I need to find out because there is a setting in the EBL (Embedded Lockers) settings. The ECM is a 8746 converted to use the EBL. TBI application for a 84. I just got the trans in and I dont want to damage anything.
If it is the origional 85 vette trans, it is normally closed. The gm part number is 8683502
Reply

Get notified of new replies

To 1985 TCC switch type





All times are GMT -4. The time now is 12:13 PM.

story-0
2027 Chevrolet Silverado 1500 First Look: Everything You NEED to Know!

Slideshow: Is the 2027 Chevrolet Silverado 1500 the best Silverado yet?

By Michael S. Palmer | 2026-06-16 08:01:12


VIEW MORE
story-1
5 Best & 5 Worst Corvette Daily Drivers

Slideshow: 5 best and 5 worst Corvette daily drivers

By Joe Kucinski | 2026-06-15 10:32:13


VIEW MORE
story-2
The Headlights of Every Corvette Generation Explained

Slideshow: The headlights of every Corvette generation explained

By Joe Kucinski | 2026-06-15 10:17:14


VIEW MORE
story-3
5 Best & 5 Most Overrated Corvette Track Packages of All Time!

Slideshow: The 5 best and 5 most overrated Corvette track packages ever.

By Joe Kucinski | 2026-06-09 12:46:45


VIEW MORE
story-4
Every 2027 Corvette Engine Explained

Slideshow: Every 2027 Corvette engine explained

By Joe Kucinski | 2026-06-09 12:16:31


VIEW MORE
story-5
Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette

Slideshow: A Jaguar designer's personal project imagines what a modern front-engined Corvette might look like if Chevrolet revisited the golden age of the Stingray.

By Verdad Gallardo | 2026-06-08 19:53:43


VIEW MORE
story-6
10 Ugly Corvettes That We Still Kinda Love

Slideshow: 10 ugly Corvettes that we still kinda love.

By Joe Kucinski | 2026-06-03 10:34:17


VIEW MORE
story-7
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

A lot of money has changed hands at the online auction house over the years.

By Brett Foote | 2026-06-03 10:21:50


VIEW MORE
story-8
10 Things Every Corvette Owner Needs (2026 Edition)

Slideshow: 10 great gifts Corvette enthusiasts actually want for Father's Day!

By Michael S. Palmer | 2026-06-03 15:43:40


VIEW MORE
story-9
8 Most "Only Corvette Owners Understand" Quirks and Problems

Slideshow: These are the quirks, annoyances, and oddly lovable problems that every Corvette owner eventually learns to live with.

By Pouria Savadkouei | 2026-05-28 09:31:39


VIEW MORE