The only way you can completely turn off the headlights is to push in the emergency brake slightly, then start the truck and leave the emergency brake on the slightest setting, and the running lights will stay off. Obviously the brakes will be slightly engaged, but you can adjust the emergency brake so the first click doesn't engage the brakes.
I just purchased a 1999 GMC Jimmy. I also noticed this happening. I called six local GMC dealers. Three of them told me it was an electrical problem, the other three told me that it is a feature they put on starting with the 1999 models. The daytime lights go off when the blinker goes on, so the blinker is more noticable to other drivers.
Where is the oil filter on a 1999 gmc jimmy
How do you change the abs pump on a 2001 gmc jimmy
i have a 4 door 1999 GMC Jimmy and I want to know how much it can pull. thinking of buying a camper this year.
The cause for a turn signal flasher to keep clicking on a 1999 GMC Jimmy is a bad flasher unit. Replacing this with a new flasher unit should solve this problem.
The PCV valve on a 1999 GMC Jimmy is located on top of the engine, on the left side. It connects the valve cover to the intake manifold.
In the fuel tank
Chain
60-66 psi
35mm
front or rear turn signals
I had the switch assembly on the steering column get burned-up at it caused my headlights to go out. It cost about $250 to replace.