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compsystems · 03-10-2017, 04:43 AM

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.

03-10-2017, 04:43 AM	#2
compsystems Registered User Join Date: Aug 2014 Location: Upland Ca Posts: 18	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.