PCM & Harness Issue
04-13-2012, 02:15 PM
#1
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PCM & Harness Issue I've got an F-Body harness and a '05 CTSv PCM. The engine is an '05 LS6 built as an F-body LS1 as far as accessories and sensors go. I was told when I bought the PCM that it would work with the F-Body harness. I'm starting to dive in to the wiring involved in my swap and I discovered that the two don't appear to want to connect to each other. Can anyone confirm whether or not these parts will work together? Not sure how helpful these pictures are.
Last edited by mbrouder; 04-13-2012 at 02:23 PM.
04-13-2012, 03:12 PM
#2
TECH Enthusiast
You have a blue/green pcm. The connectors showing are blue/red. You need to replace the red covers on the harness to green or break the the ridges so they fit into the green pcm. I would be curious as to what LS6 motor you have that is cable driven as they did not make them. Sounds like you need another harness or convert your motor to cable driven.
04-13-2012, 03:21 PM
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You have a blue/green pcm. The connectors showing are blue/red. You need to replace the red covers on the harness to green or break the the ridges so they fit into the green pcm. I would be curious as to what LS6 motor you have that is cable driven as they did not make them. Sounds like you need another harness or convert your motor to cable driven.
Are the connector covers on the harness available anywhere?
04-13-2012, 05:19 PM
#4
I would find a Red/Blue PCM. There are a couple differences in the wiring as far as the oxygen sensors are concerned. The harness can be modded. Also some of the Blue/Green PCM's cant run a cable style throttle body. If it will control a cable tb, it will need to be reflashed with a program set up for cable.
The 04-05 Cts-v were LS6 with drive by wire throttle as in the c5 corvette.
The 04-05 Cts-v were LS6 with drive by wire throttle as in the c5 corvette.
04-13-2012, 05:38 PM
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I would find a Red/Blue PCM. There are a couple differences in the wiring as far as the oxygen sensors are concerned. The harness can be modded. Also some of the Blue/Green PCM's cant run a cable style throttle body. If it will control a cable tb, it will need to be reflashed with a program set up for cable.
The 04-05 Cts-v were LS6 with drive by wire throttle as in the c5 corvette.
The 04-05 Cts-v were LS6 with drive by wire throttle as in the c5 corvette.
04-13-2012, 05:52 PM
#6
Yea, cable driven throttle bodies in the LS cars are by far the minority. The only ones I am aware of is the 1998-2002 F-bodies (Camaro, Firebird) and the early GTO - 2004 only I think. Other than that, all other LS car engines were DBW.
BTW, I think you did the right thing. Buying a PCM to correctly match the harness will make things a lot easier!
BTW, I think you did the right thing. Buying a PCM to correctly match the harness will make things a lot easier!
