OBD Port Connection to PCM 5.3 '03
08-05-2010, 12:22 AM
#1
On The Tree
Thread Starter
iTrader: (1)
Join Date: Mar 2006
Location: Phoenix, AZ
Posts: 174
Likes: 0
Received 0 Likes
on
0 Posts
OBD Port Connection to PCM 5.3 '03 I am just about ready to take my car to the dyno, but I'm stumped how the OBD serial link connects to the PCM - I need to know the pin number and connector.
I thought it was pin 58 or 59 on C1 Blue connector on the PCM, but there isn't anything in the harness for this.
Can anybody tell me the serial data pin on the '03 PCM? Lots of information on the LS1 and earlier truck PCMs but nothing on the '03
Thanks in advance
Phil
I thought it was pin 58 or 59 on C1 Blue connector on the PCM, but there isn't anything in the harness for this.
Can anybody tell me the serial data pin on the '03 PCM? Lots of information on the LS1 and earlier truck PCMs but nothing on the '03
Thanks in advance
Phil
08-05-2010, 08:21 AM
#3
Teching In
Join Date: Jul 2010
Posts: 30
Likes: 0
Received 0 Likes
on
0 Posts
I thought the diagnostic connector wire was on that black plug that went to the body. But that is on a 02 not sure on 03. I think the conector is like c100 and its a dark green wire in H position.
