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Old 03-09-2017, 07:27 PM   #1
jweb
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TCC hook up on 04 GTO PCM?

I need to know which wire to use for a tcc hook up. The 04 gto pin out list 2 different tcc wires

GY/RD 422 TCC Solenoid Valve Control

BN 418 TCC PWM Solenoid Valve

I would guess this is like others 12v until braking then 0v. Which connection and what's the other wire for?
Are there any wires on the transmission that I will need to check or modify?

Thanks
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Old 03-10-2017, 04:43 AM   #2
compsystems
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Re: TCC hook up on 04 GTO PCM?

Jweb,

Looking at the diagrams on lt1swap.com I think both 422 and 418 go to the transmission to control the TCC solenoid.

http://www.lt1swap.com/pictures/Auto...20Controls.gif

I think the brake switch signal you are looking for goes here on C1-33

http://www.lt1swap.com/pictures/Powe...p%20Inputs.gif

It looks like its wired as a normally closed switch, so 12v off the brake and then 0v when brake applied.
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Old 03-10-2017, 10:41 AM   #3
jweb
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Re: TCC hook up on 04 GTO PCM?

Looking at the pinout that wire is for the cruise control. I wonder if does both?
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Old 03-10-2017, 09:02 PM   #4
clinebarger
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Re: TCC hook up on 04 GTO PCM?

Quote:
Originally Posted by jweb View Post
Looking at the pinout that wire is for the cruise control. I wonder if does both?
It does both.
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Old 03-10-2017, 09:32 PM   #5
jweb
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Re: TCC hook up on 04 GTO PCM?

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Originally Posted by clinebarger View Post
It does both.
Thanks, I will get it hooked up and if it ever stops raining go for a drive to see if I notice an improvement.
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