The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1973 - 1987 Chevrolet & GMC Squarebody Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 07-18-2020, 09:18 PM   #1
67see10
Registered User
 
67see10's Avatar
 
Join Date: Jul 2017
Location: FL Born, UT Living
Posts: 139
LS Swapped squarebody

My buddy got a 85 Silverado that someone ls swapped with a manual transmission. The wiring is all jacked up and we were trying to figure somethings out. The motor is a 05 DBW 5.3.

I looked at the pin out and noticed that blue pin 35 CPP Signal switch (M/T) was missing. I’m assuming that this should be pinned to the pcm & if so where is this switch signal coming from?
__________________
Instagram: @petestruckfarm
67see10 is offline   Reply With Quote
Old 07-18-2020, 09:32 PM   #2
Wide Open
Registered User
 
Join Date: May 2016
Location: Ohio
Posts: 274
Re: LS Swapped squarebody

I found this -

The CPP has both a normally open circuit and a normally closed circuit in it. The normally closes circuit send 12v to the ECM at all times. As soon as you start to push the clutch, the normally closed ciruit opens removing the 12v from the ECM and disabling the cruise control. When the clutch is pressed all the way down, the normally open circuit is closed sending 12v to another pin on the ecm which will allow the vehicle to start.

Pin A PPL wire is for the TCC brake switch/cruise control release signal
Pin B brn/wht CPP switch signal
pin C lt grn igntion positive voltage
pin d ppl/wht starter relay coil supply voltage
pin e brn ignition 3 voltage
pin f gry CPP switch signal

on this site -
https://www.performancetrucks.net/fo...-444893/page2/

Hope that helps you.
__________________
1972 K10
1986 K30 crew cab dually
2002 Z06
2007 Escalade
Wide Open is offline   Reply With Quote
Reply

Bookmarks


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 06:34 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com