I just bought a 93 jimmy 4x4 for $500. It only has 127000, but has a small amount of front end damage. The previous owner hit somthing on the front drivers side. The grille is busted, which I removed completely, the driver side headlight had already been replaced without a mounting bracket using zip ties, and the driver side running light and blinker were busted out. I spliced the passanger side blinker into the running light turning it into a blinker but my drivers side blinker just stays on steadilly when turned on, I have seen the fast blink thing to let you know your blinker is out but I have never seen this. When I turn the blinker on it just stays steady on. Actually the back stays on, the front won't come on at all. I guess the wiring harness must be somehow damaged.

What do I need to do to get the driver side blinker working?

 

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I agree with slammin. It's a common problem with these blazers

 

I'm not to sure about the last 2 posts, but I think you either have your signal light wired wrong, the flasher unit is faulty or you have a bad bulb in the front.
If you take apart the wiring that you did in the left front, will the left rear flash?

 

The driver blinker was messed up before I messed with the passanger side. The passanger side blinkers work fine front and back, before and after I messed with the wiring. The back driver side blinker lights up but stays on without blinking while the front driver will not come on at all, even after I took the good bulb out of the passanger side and put it in the driver side.

 

It could be any wiring going back to the control relay in the dash area. I would check that control relay out.