Which parts fail
Components named in complaints (headlights, tail lights, turn signals, interior lights).
Mileage when the problem started
Owner reports
Selected complaints filed with NHTSA by 1999 Chevrolet Blazer owners, lightly cleaned up (personal details are redacted by NHTSA).
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. …
'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 $400 price tag. Please help this young girl, she is trying to the right thing, lets help her do it.
Dt: the contact complained about multiple problems with this vehicle. The 4-wheel drive actuation motor was replaced. The heater core became blocked and was flushed by the dealer. The steering box and pitman arm were replaced. Also, the front wheel bearings were replaced. The headlights became dim. The rear windshield wiper stopped working. The dealer performed numerous repairs, and could not offer an explanation as to why these problems occurred at such low mileage. The vehicle is remained at the dealer awaiting repairs on the rear windshield wiper. Also, replaced loose front hubs.
The multi-function switch in my 1999 Chevy Blazer ls is malfunctioning. During driving, the blinker sound is constantly clicking whether or not I am making a turn or enabling my safety hazard lights. When I apply the brakes on the car, the clicking sound temporarily stops. When I drive again, the clicking sound starts again. This malfunction gives the driver the false indication that their turn signals is on, when it is actually not on, and can cause an accident.
I have 2 blazers 1999 and both have the same problem a failing multi function switch that makes an annoying constant clicking sound that come from behind the glove box. I had one repaired last year that cost me over 600$ 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.
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.
My car has had two recliner mechanizms break in 2 years. My security lights come on for no reason,my paint is checking and peeling.now it appears that my control arm and lower ball joint were failing at 85,000 miles. At about 70,000 miles my 4wheel drive would slip in and out at freeway speed. I have a 1999 Chevy Blazer,4dr, completely maintained and driven with care.
There is a constant blinking noise coming from my glove box. When pressing on the break it quits. By looking up information on the internet I found out it is the multifunction switch. There were recalls on other years but not 1999 blazers. Its very expensive to fix. There was one on 1998 blazers I believe. I have a 99 Chevy Blazer. Has happened since I bought it.
The hazard warning switch has a defect which causes the hazard flasher to function while riding down the road. The lights do not come on, but you can here the flasher clicking, and it gets worse over time. The potential exists for the switch to reach the point where the hazard flashers come on during normal driving.
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.
Headlight complaints in other Blazer years
Frequently asked questions
How common are headlight problems on the 1999 Chevrolet Blazer?
NHTSA has 32 complaints about the lights of the 1999 Chevrolet Blazer, 7% of the model year's 436 complaints. The component named most often is hazard flashing warning lights › switch (7 mentions).
Is there a recall for 1999 Chevrolet Blazer headlight problems?
No. NHTSA lists no lights recall for the 1999 Chevrolet Blazer. If the problem is widespread, a repair may still be covered by an extended warranty or a manufacturer service bulletin — ask a dealer.
At what mileage do 1999 Chevrolet Blazer headlight problems start?
Half of the complaints with a recorded mileage happened before about 96,000 miles, and 6% before 25,000 miles.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.