Cruise control not working after manual swap
Instructor
Joined: Aug 2021
Posts: 200
Likes: 34
From: Niceville FL
Did you ever end up getting this to work?
Edit: I see on another post you said this:
Instructor
Joined: Aug 2021
Posts: 200
Likes: 34
From: Niceville FL
Sorry to be back here again lol. I've gotten to the step of wiring into the pcm for this switch. Looking at the blue pcm connector, I don't have a wire or pin for that terminal. What did you do about that? Did you pull one from a different spot or something?
Im working on this tonight, so I think what Ill try is pulling out pin 17 circuit 1225, which is the "Transmission Range Signal B (Automatic Transmission Only)" on the pcm and "Transmission Pressure Switch Signal" on C144. C144 I believe is the unused connector left unplugged.
Im working on this tonight, so I think what Ill try is pulling out pin 17 circuit 1225, which is the "Transmission Range Signal B (Automatic Transmission Only)" on the pcm and "Transmission Pressure Switch Signal" on C144. C144 I believe is the unused connector left unplugged.
Last edited by Preston.Corvette; Feb 21, 2026 at 07:09 PM.
Instructor
Joined: Aug 2021
Posts: 200
Likes: 34
From: Niceville FL
Do you have a copy of your tune? I know we have different years of cars, but I want to compare the two, as my throttle is cutting out and I suspect it might be from that.
My theory with the tune is that some remaining automatic features are still applying like torque management.
Last edited by Preston.Corvette; Feb 25, 2026 at 04:13 PM.
Thread Starter
Racer
Joined: May 2019
Posts: 316
Likes: 21
From: Michigan
I am far from stock, it wouldn't even be worth sending to you. I do have a guy that has quite a following, and many years of tunning. You can find him on Facebook under the name James Brewer. Pricing is very hard to beat, his ability with HP Tuners is very well known. I think you would benefit a lot of you reach out to him.
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Instructor
Joined: Aug 2021
Posts: 200
Likes: 34
From: Niceville FL
I am far from stock, it wouldn't even be worth sending to you. I do have a guy that has quite a following, and many years of tunning. You can find him on Facebook under the name James Brewer. Pricing is very hard to beat, his ability with HP Tuners is very well known. I think you would benefit a lot of you reach out to him.
If you're not willing to share that's fine. I have a friend with an 04 m6 that I can grab the tune file from next week.