wat type of blazer? There are many types ,but only one way to change them let me know and Ill find out
If you can't access the bulbs take the light assy off and turn the bulbs counterclockwise to remove them
How to change the bulbs in the climate control for a 1999 Chevy trailblazer
There are many bulbs on a vehicle, need to know which bulbs you want to change.
push up and turn on the housing
If the fuse is good and the bulbs are good, replace the flasher relay.
Take a small screwdriver, gently pry the cover off. Slight downward pressure will remove the old bulb.
Check bulbs, fuses, and check for wiring problems
What size bulbs in vanity mirror on a 1999 ford explorer?
open the hood. in back of headlight assembly there are two metal tabs. pull them up. the assembly will slide oot of the grill giving you access to bulbs.
How_do_you_change_the_fog_lamp_bulbs_on_2002_Chevy_Impala
If the turn signal bulbs light but will not flash, the flasher relay is defective, replace it.
Check the brake light switch.