LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Cadillac >> 2006 >> STS V >> Repair and Diagnosis >> External Pages >> Different car >> Section 17 (Data Communication System) >> Description and Operation >> Data Link Communications Description and Operation >> Keyword Serial Data Line (TR7)
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Keyword Serial Data Line (TR7)

WARNING: This page is about a different car, the 2007 Cadillac CTS. However, it is still accessible from the selected car via links, so may be relevant.

The keyword protocols utilize a single wire bi-directional data line between the modules and the scan tool. The message structure is a request and response arrangement. The keyword serial data line is used for scan tool diagnostics only. The modules do not exchange data on this circuit.

The modules on the GMLAN serial data line are:

scientia non olet · About LEMON Manuals