I have the same problem w/my 2001 and it seems a lot of the problems can be traced back to the ignition switch, or the turn signal switch/lever(cruse,turn signal arm off the steering column). It seems that both are "lubricated" during manufacturing and eventually leak which attracts 'gunk' internally and causes problems with the electrical connections. I have not attempted to replace these myself, but many have and said it solved all their problems. Of course you are driving a Jimmy and if you are not mechanically inclined, you soon will be and/or your wallet will be empty. I am simply amazed that they mass produced these vehicles under the name of Blazer/Jimmy/Oldsmobile, knowing they had serious problems. In most of these post the only happy jimmy owner is the person who sold theirs because they will definitely cost you a lot of money to keep on the road. Reminds me of the old Harley Davidson's because everyone you knew who owned one became a front yard mechanic just to keep the wheels rolling.
Check the daytime running light module
My 1999 has been doing this for years. I have learned to ignore it. No negative affect so far.
The cast of Headlights - 1999 includes: Darren Walsh as Angry Kid
Staring at Headlights - 1999 was released on: USA: 4 March 2006
I'm having the exact same problem. Does anyone know what is causing this?
There are a couple of reasons why a 1999 Tahoe headlights may not work. A couple of reasons could be blown bulbs or the wiring.
On a 1999 Ford Windstar, the headlights might come on when the car is shut off because of a mechanism that allows for a courtesy light. The headlights come on for a few seconds to allow time for the driver to enter a building.
no
1999 4WD Jimmy holds 18 gallons of fuel.
Jimmy Zip - 1999 is rated/received certificates of: USA:R
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 are the relay switches on a 1999 Buick Century for the headlights