See also:

Loose Fuel Filler Cap Message
If the vehicle diagnostic system determines that the fuel filler cap is loose, improperly installed, or damaged, a “gASCAP” message will display in the odometer or a “CHECK GASCAP” messa ...

5.7L Engine – If Equipped
This engine is designed to meet all emissions regulations and provide satisfactory fuel economy and performance when using high-quality unleaded gasoline having an octane range of 87 to 89. ...

To Activate
1. Select “Automatic High Beams — ON” through the EVIC. Refer to “Electronic Vehicle Information Center (EVIC)/Customer-Programmable Features” in “Understanding Your Instrument Panel ...