Conditions for Setting the DTC
WARNING: This page is about a different car, the 2004 GMC Yukon XL and 2004 GMC Yukon. However, it is still accessible from the selected car via links, so may be relevant.
- The system constantly monitors the voltage on switch signal circuit.
- If the system detects a voltage level under 0.3 volt or greater than 0.75 volts, the DTC is logged.