manual pcm
Post Fiend
Joined: Feb 2009
Posts: 8,773
Likes: 1
From: Texas Coast
Cargo Master
Joined: Feb 2010
Posts: 2,526
Likes: 6
From: College Station, TX
Hey Jason. I had my auto PCM reburned which is essentially what you've done with your chip. With the help of several high caliber guys I was able to figure that same issue out. After the swap I ran it stock for a while and my cruise worked but when it was reburned as a manual my cruise stopped functioning correctly. I was given some good info on this subject from Jody Tipton and Jim Rose and got it working again. Here's the scoop:
I spliced Pin 29, the Tan/WH wire, into Pin 31 which is Black/Yellow. Pin 31 is the brake pressure switch and my diagram shows it to be hot always EXCEPT when the brake is applied. Anyway, took it for a test drive afterward and everything works as it should, all the cruise controls and brake disengage. I heard indirectly from Ryan Bean that you just have to verify 12v to Pins 29, 31, and 92 and as long as those check out it will work.
I spliced Pin 29, the Tan/WH wire, into Pin 31 which is Black/Yellow. Pin 31 is the brake pressure switch and my diagram shows it to be hot always EXCEPT when the brake is applied. Anyway, took it for a test drive afterward and everything works as it should, all the cruise controls and brake disengage. I heard indirectly from Ryan Bean that you just have to verify 12v to Pins 29, 31, and 92 and as long as those check out it will work.
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redman84
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