1999 Chevrolet Blazer lt - multifunction switch (common problem!) is malfunctioning. Turn signal/flasher relay is constantly clicking whether signals are in use or not -- unless the brakes are applied. Good sign of an electrical short. The cause of this issue is the grease inside the switch, applied at the factory, running from contact to contact. This switch includes the wipers, cruise control, turn signals, hazards, and can also cause vehicle lighting (headlights, brake lights) to malfunction. Many cases include non-working brake lights! others have reported smoke coming from the switch as the contacts are shorted by the grease. I inherited this vehicle from my grandfather, who couldn't hear the relay firing -- it is the only indicator inside the vehicle that something may be going wrong. There are no visible indicators inside the vehicle letting a person know their lights are malfunctioning. As there is no recall for this year of Blazer (though I understand other years have had the same problem recalled), I will be replacing the switch on my own. Dealer quoted the price for the part alone well out of my price range (nevermind labor), so I'm going to have to shop around to get the vehicle in safe driving condition. Thanks for reading. I appreciate it!

- Fargo, ND, USA

Turn signal indicator clicks when turn signals not in use.

- Elkhart, IA, USA

I have 2 Blazer 1999 and both have the same problem a failing multi function switch that makes an annoying constant clicking sound that come from behind the glove box. I had one repaired last year that cost me over 600$ and now my other Blazer is having the me the same problem.the part they have change is the arm for the flasher right /left in witch includes the cruise control high beam light.

- Montreal, 00, USA

The multi-function switch in my 1999 Chevy Blazer ls is malfunctioning. During driving, the blinker sound is constantly clicking whether or not I am making a turn or enabling my safety hazard lights. When I apply the brakes on the car, the clicking sound temporarily stops. When I drive again, the clicking sound starts again. This malfunction gives the driver the false indication that their turn signals is on, when it is actually not on, and can cause an accident.

- Los Angeles, CA, USA

Multi function switch on 1999 Blazer just cost us $591.23 to fix and is recalled on other year models.

- Chattanooga, TN, USA

'99 Blazer ZR2 my daughters first car, she paying for herself. Has the most annoying blinker noise under passenger side dash. In research have found that 100S of other people are having the same very expensive fix. It consists of a multifunction switch with the cost of upto $700. I feel that Chevrolet (GMC) should be responsible for some of this repair--it obviously is a problem with a design or a defected part. If you check the internet it is just loaded with people dealing with this. In addition to this that same year Blazer seems to have some transmission problems and bearings at the 70,000 mil range.....something isn't right here. We just did the bearings for the $400 price tag. Please help this young girl, she is trying to the right thing, lets help her do it.

- Alma, WI, USA

I have a 1999 Chevy Blazer with 89,000 miles and it seems the multi function switch is failing. My turn signal beeping does not turn off when I not using the turn signal. I heard this also will eventually cause a delay with the turn signal that could eventually be a safety issue.

- Mount Laurel, NJ, USA

The multi function switch located on the driver's side under the dash is problematic. The failure of the switch results in the rapid clicking noise that can be heard from behind the glove box on the passenger side. This is such a common problem I can not believe there is not a recall. This is the second GM of this model that my family has owned with the same problem.

- Eau Claire, WI, USA

Consumer advised that the vehicle's head, tail and interior lights will brighten and dim without warning while driving. Finally on 11-4-02 all vehicle lights failed completely.

- Searcy, AR, USA

Vehicle lighting system, including dash, interior lights, head lights, etc, will blink erradically. The manufacturer is aware of the problem, and has indicated that it could be the ABS system malfunctioning, or something else, they are unsure. I have contacted GM on several occasions for updates. They provide nothing.

- Chesapeake City, MD, USA

Standard daytime running light were not installed because manufaturer felt they were too close to the turn signal which would confuse motorist which lights were being used. Nlm

- Lakeland, FL, USA