DTC C1743: Loss Of Vehicle Speed Signal

Perform RTD diagnostic system check. See RTD DIAGNOSTIC SYSTEM CHECK . After performing RTD diagnostic system check, go to next step.
If any Powertrain Control Module (PCM) Vehicle Speed Sensor (VSS) DTCs are set, diagnose Powertrain Control Module (PCM) DTCs. See TESTS W/CODES article in ENGINE PERFORMANCE section. If no PCM vehicle speed sensor DTCs are set, go to next step.
Test drive vehicle and observe speedometer operation. If speedometer operates properly, go to step 5). If speedometer does not operate properly, go to next step.
Turn ignition off. Disconnect RTD control module connector C2. Test drive vehicle and observe speedometer operation. If speedometer operates properly, go to step 8). If speedometer does not operate properly, diagnose vehicle speed sensor. See TESTS W/CODES article in ENGINE PERFORMANCE section.
Check for an open in Dark Green/White wire between RTD control module connector C2, terminal C6 and PCM. Repair as necessary and go to step 8). See WIRING DIAGRAM . If Dark Green/White wire is okay, go to next step.
Check RTD control module connector C2 for intermittent open. Check for intermittent open in vehicle speed circuit (Dark Green/White wire). If connector and circuit are faulty, repair as necessary and go to step 8). If connector and circuit are okay, go to next step.
Turn ignition off. Reinstall/reconnect all components/connectors. Using scan tool, clear all DTCs. Drive vehicle faster than 20 MPH for 20 seconds. If DTC C1743 is set, replace RTD control module. See RTD CONTROL MODULE under REMOVAL & INSTALLATION. After repairs, go to next step. If DTC C1743 is not set, system is functioning properly.
Turn ignition off. Reinstall/reconnect all components/ connectors. Using scan tool, clear all DTCs and perform RTD DIAGNOSTIC SYSTEM CHECK .