One problem related to hazard flashing warning light unit has been reported for the 1999 Chevrolet Blazer. The most recently reported issues are listed below.
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.