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 99-06 Chevy and GMC Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 11-08-2017, 05:19 PM   #1
Infidel 76
Registered User
 
Join Date: Aug 2016
Location: Staplehurst, Nebraska
Posts: 1
LB7 TCM communication

Helping my son with his truck, has lost communication with TCM intermittently. He has temporarily got it working messing with harness going to ECM, but issue returns. It appears as though a previous owner did some repairs to the ECM harness in the past and concerns me. Wondering if anyone has pin out diagrams for the ECU connectors so I can verify they are as they should be, and should help me rundown the cause of his current issues.

Current issues show code for TCM communication loss, fuel gauge, tach, speedometer not working. Transmission won't shift out of third gear.


2001 2500HD Silverado - LB7 Allison AT
Infidel 76 is offline   Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

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 02:00 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Copyright 1997-2013 67-72chevytrucks.com