Contact Details
Ordering, Purchase support, USB-Link hardware and driver support:
Call 877-974-3539 or email

Programming event issues, DTNA eLink and Detroit Assurance questions:
General DiagnosticLink 8 software support, Single Sign On (SSO ID) ID Problems, Registration or Deauthorizaton, Troubleshooting content problems, Service link:
Call 855-639-8680 or email

Other app support (DDEC Reports, DiagnostictLink 6.5, etc.), vehicle server download support such as MCM, ACM, CPC, etc.:
Call 855-253-0423 or email
For Authorized Service Locations:
Diagnostics & Powertrain Support:
Call 855-253-0423 or email

Diagnostics & Chassis Support: Call 855-253-0422