Turn signal continues to make the clicking sound

I had the same problem, I found the post quoted below and fixed the problem in about 1 hour without having to replace any parts. Hope this helps!

(I can't seem to get back into the link but had copied the answer - the original link is: http://www.allaboutauto.us/2007/04/07/1999_chevrolet_blazer_turn_signal_clicking_noise.html)

"I had this same problem and fixed it myself. The problem is caused by the contacts rubbing and releasing small particles which conduct small amounts of electricity and cause the flasher relay to click. From a GM Goodwrench mechanic.

Disconnect Battery Before doing this.

You need to remove the turn signal arm from the steering column. This may seem difficult but it really isn't. Separate the top and bottom covers. Find the screws and remove the switch. One is located behind the column and requires some dexterity to get out. I used a Torx bit on a 1/4 box wrench.

The difficult part is separating the switch to clean the contacts. Take your time and you can figure out how to separate the switch. If I remember right, the switch separates and then the emergency signal switch slides out. Also, pay special attention to the way the rotary wiper delay switch is set into the switch.

Once you can see the contacts, clean them off of all lubricant and metal pieces. I would hesitate to use Isopropyl Alcohol for this because off the plastics involved. I just used lots of Q-Tips and a lot of patience.

Finally, get a good Dielectric (non-conducting) lubricant from auto store and cover all contacts with a thin layer. Put the switch back together, reinstall and test.

This took me about four hours to repair. Because I took my time and did not force anything. Once I figured it out it wasn't that hard. The hard part was the rotary delay switch and how it was set into the switch.

I figured if this didn't work, I was going to have to replace the switch anyway, so what the hell. Just make sure your local auto parts store has one of these available if you screw this one up.

Did this about four years ago and problem has not returned since."

I had the same problem. Tried signal flasher relay. Did not fix problem. Replaced multi-function switch which did fix the problem. multi-function switch is now available in the aftermarket.

You will noy need to replace a fuse you will need to replace the turn signal switch in the column. Try unplugging the turn signal switch first, if this makes it stop then it is the switch.

You need to replace multifunction switch . its the turn signal switch and wind shield wiper . it come as a whole unit . its in steering column. disable air bags before working on it.

I think your problem is in your turn signal relay.relay is bad.take it our and replace and see if that doesnt work..relay is relatively inexpensive