Conditions for Setting the DTC
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2011 GMC Yukon XL, 2011 GMC Yukon, 2011 Chevrolet Tahoe, 2011 Chevrolet Suburban, and 2011 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
- The fuel tank vacuum is greater than -12 inches H2O vacuum for 5 seconds.
OR
- The FTP is less than -2.5 inches H2O or more than +5 inches for 60 seconds after a cold start.