How do you disable the daytime running lights on a 1997 GMC sierra pickup truck?
By depressing the parking brake only one(1) click so that it
will not engage the brake, but the lever will stay down, this will
disable the daytime driving lights. The parking brake indicator
light will stay lit on the instrument panel however. It's
simple.There is a fuse in your fuse box that you can take out and
it will disable the lights. It's either fuse # 2,5,15,22, or 23.
The little green light in the upper left portion of your instrument
panel will still operate as if the lights have never been
de-activated. It will stay lit until you manualy turn your
headlights on, then it will go out.