Search WEB Telma USA

     Please Note Our New Address:

          Telma Retarder Inc.
          870 Lively Blvd.
          Wood Dale, IL 60191

          (Same phone numbers)
          Phone: 847-593-1098
          Fax: 847-593-3592
          Toll Free: 800-797-7714

Welcome to the Telma Technical Webpage. Please use the links to the left to navigate the Technical Webpage.

Looking for Service / Repair information? See our Service Manual under the Tech Support tab.

For Maintenance and Troubleshooting information see our Training tab.

Need assistance identifying your retarder? Identify My Retarder 

Telma Technical News

Telma Control Module (TRCM) with J1939 and DSC
New Firmware and Software for the TRCM
Compatibility with vehicles equipped with J1939 CAN
Downhill Speed Control (DSC) option
Technical Service Bulletin: TL105090 TRCM with J1939 and DSC
• More information in the Service Manual:
• Tech Support > Service Manual > Section 2 > Part H

 
Mack / KAR-TECH Control System Conversion
View information page

 
ABS Interface - no longer available
TL105089 ABS Interface Availability

 
*NEW Telma Control Module
• TL105087 TRCM Introduction 
• TL105088 TRCM Product Profile 
• Full details in Service Manual:
• Tech Support > Service Manual > Section 2 > Part H

 
2011 GMT610 Diesel Speed Signal wire has moved from pin 54 for 2008-2010 to pin 27 for 2011 on the X2 connector
• TL113009 Chevy 4500 Express Installation Manual 6.6L Diesel with TRCM 
• TL113010 Chevy 4500 Express Installation Manual 6.0L Gasoline with TRCM