On the dash of my 2005, gas, Chevy 2500 super c, there's a switch with a "D" with a line through it. There's nothing in the manual about it. What does it do?
2006 Gulf Stream Endura 6316
2007 Car Hauler
2008 Toy. Highlander Sport
2006, From Cent. Fl to Cent. Fl, by way of Alaska, 109 days & 14,947 miles
2010, From Cent. Fl to Cent. Fl, by way of Alaska, California, Washington, D.C. 97 days & 13,076 miles.