Can you take the left front signal cover off on a 1997 chevy blazer to change the signal bulb

A dead bulb could do it.
Try the hazard lights to determine

on the 96 its just beside the cig, lighter. remove bottom panel from dash, from steering wheel to lighter. the right one is for the turn signals, and the left one is for the 4 ways. hope this helps, good-day !

I just had to do this on mine. You need to take out the headlight assembly. There are two long screws above the headlight assembly under the hood. Once you remove those, the headlight will come out the front enough to get at the turn signal bulbs. If I remember right I just turned the bulb ( connector holding the bulb) clockwise and I was able to get it to come out. Just put the new one in and put it back together and you are good to go. I think the screws were 5 or 6mm. They are pretty long so using a socket wrench will help a ton. Hope this helps.

Constant 12V+ Orange Switched 12V+ Yellow Ground Black Illumination Gray Dimmer Brown Antenna Right Front Front Speakers 6 1/2" Doors Left Front (+) Tan Left Front (-) Gray Right Front (+) Light Green Right Front (-) Dark Green Rear Speakers 6 1/2" Rear Doors Left Rear (+) Brown Left Rear (-) Yellow Right Rear (+) Dark Blue Right Rear (-) Light Blue

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More likely it is the hazard/turnsignal/highbeam/cruise control switch module. It costs about $275 for the module. However there is a repair kit for the likely culprit...the hazard button. Try jiggling it around a little, see if that helps. Spray a little WD-40 into it so it can jostle back into it's correct position. You could try a junkyard unit or Ebay. It's not too hard to change. The hard part is doing it without removing the steering wheel. It can be done. I've done it. But hopefully you can locate the repair kit which costs about 15 dollars. Good luck.

LOWER REAR HATCH SHOULD BE TWO SCREWS ON SIDE OF LIGHT REMOVE AND TAKE LIGHT OFF MIDDLE LIGHT SHOULD BE SIGNAL LIGHT BULB PUSH TAB AND TURN LEFT TO REMOVE REPLACE BULB .

The way the system works is:
The fuse supplies 12 volts to the flasher unit then leaves the flasher and goes to the turn-signal switch in the steering column.
When you set the turn-signal switch to turn right or left, the switch sends that 12 volts to the front and rear bulbs. The voltage goes through the bulb, lighting the bulb and goes to ground.
If any of these components are not good than the lights will not work.
Check the fuse and make sure it is good, the fuse will be located under the hood at the fuse center.
Let me know if you have a test light and we can proceed from there.
Regards,

This usually means that you have a bulb burnt out. Check the left rear

open your hood between the battery and the front core support is 2 black plastic clips pull them up and set aside then your head light fixture will come out for you to change your lights

you have to go under the front of the car. very easy to fix.