Turn signals not working?

Tiny
MALLUMS
  • MEMBER
  • 1 POST
  • 1995 CHEVROLET SILVERADO
  • V8
  • 2WD
  • AUTOMATIC
  • 304,000 MILES
Does this vehicle have a turn signal relay and if so, where is its general location?
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Sunday, October 25th, 2020 AT 12:06 PM (Merged)
Tiny
BLUELIGHTNIN6
  • MECHANIC
  • 16,542 POSTS
Turn signal flasher relay is on the convenience center (under left side of dash). If flasher relay is good check fuses.
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Sunday, October 25th, 2020 AT 12:06 PM (Merged)
Tiny
LAVELL
  • MEMBER
  • 1 POST
  • 1995 CHEVROLET SILVERADO
  • 4WD
  • 206,000 MILES
Wiring truck to old bed and lights hooked taillight wire wrong and blew 30 amp fuse. Replaced fuse and now only parking light and brake light, no blinkers disconnected all lights at wire harness, still no blinkers, what am I missing?
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Sunday, October 25th, 2020 AT 12:06 PM (Merged)
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
It may be a quite a few things, check ground at left hand rear of frame. It may be the circuit board on back of frame or turn signal switch etc. See pictures and check fuse and wires for power.
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Sunday, October 25th, 2020 AT 12:06 PM (Merged)
Tiny
POOLE09
  • MEMBER
  • 2 POSTS
  • 1991 CHEVROLET SILVERADO
  • V8
  • 4WD
  • AUTOMATIC
  • 222,177 MILES
I just picked up a 1991 K1500 for snowplowing. I noticed that the when I flip the turn signal up, like when I'm making a right turn, the lever appears to be in the center position. When I flip it down for a left turn, it will not stay down, and I can hear the flasher working but no left turn signal. Any suggestions where to start?
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Sunday, October 25th, 2020 AT 12:07 PM (Merged)
Tiny
INTERNETMECHANIC
  • MECHANIC
  • 700 POSTS
I'd probably replace the multifunction switch, for a start. With it apart, you can probably use a jumper wire for the proper terminals and make them turn signals dance, just for testing, before you put everything back together.
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Sunday, October 25th, 2020 AT 12:07 PM (Merged)
Tiny
POOLE09
  • MEMBER
  • 2 POSTS
Well, that's what I thought, but this does not have a multifunction switch. I just finished pulling the steering wheel and replacing the turn signal switch, but same problem.
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Sunday, October 25th, 2020 AT 12:07 PM (Merged)
Tiny
INTERNETMECHANIC
  • MECHANIC
  • 700 POSTS
Sorry about that, I should have looked at the wiring diagram first. All I can do is check the bulb socket for voltage and ground, backtrack the circuit. The ground is black. The color for the voltage wire is in the diagram. Sometimes I use a testlite in the bulb socket, bulb removed, to check for voltage and ground.


https://www.2carpros.com/forum/automotive_pictures/512072_k1500_turn_switch_1.jpg

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Sunday, October 25th, 2020 AT 12:07 PM (Merged)
Tiny
SUSIE1961
  • MEMBER
  • 1 POST
  • 1991 CHEVROLET SILVERADO
Electrical problem
1991 Chevy Silverado V8 Two Wheel Drive

blinkers do not work, everytime I put a new fuss in it blows. I bought a new blinker switch but do not know how to replace the old one, not sure it is even this problem
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Sunday, October 25th, 2020 AT 12:07 PM (Merged)
Tiny
BLUELIGHTNIN6
  • MECHANIC
  • 16,542 POSTS
Hello and thanks for donating!

Before replacing switch, I would replace the flasher relay. It may be shorting out causing fuse to blow. If flasher is OK then check wiring to switch. If OK here as well then follow steps below to replace switch.

Make sure the switch is in the off position.
Remove the steering wheel
Remove the instrument panel trim cover.
Insert a screwdriver into the lockplate cover slot and pry out the cover. Remove the lockplate. A special tool is available to do this. The tool is an inverted U-shape, with a hole for the shaft. The shaft nut is used to force it down. Pry the wire snapring out of the shaft groove. Discard the snapring.
Remove the tool and lift the lockplate off the shaft.
Remove the turn signal lever screw and lever.
Press the hazard button inward and unscrew it.
Remove the switch retaining screws. Pull the switch connector out of the mast jacket and feed the switch connector through the column support bracket.
Position the turn signal lever and shifter housing in the downward, or "low" position and pull downward on the lower end of the column using a pliers on the tab provided. Remove the wire protector.
Remove the switch mounting screws. Remove the switch by pulling it straight up while guiding the wiring harness cover through the column.

To install:

Install the replacement switch by working the connector and cover down through the housing and under the bracket.
Install the switch mounting screws and the connector on the mast jacket bracket. Install the column-to-dash trim plate.
Install the flasher knob and the turn signal lever.
With the turn signal lever in neutral and the flasher knob out, slide the thrust washer, upper bearing preload spring, and canceling cam into the shaft.
Position the lockplate on the shaft and press it down until a new snapring can be inserted in the shaft groove.
Install the cover and the steering wheel.
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Sunday, October 25th, 2020 AT 12:07 PM (Merged)
Tiny
DKJTEX
  • MEMBER
  • 1 POST
  • 1990 CHEVROLET SILVERADO
  • V8
  • 4WD
  • AUTOMATIC
  • 238,000 MILES
Just bought a 1990 Chevy 1/2 ton 4wd, and the tail, stop, and turn signals don't work. No brake lights, no tail lights, and no left turn. When I turn on the right turn, it flashes but, very, very dim, to the point that you can't even see it through the red lense cover. And, at the same time that the right turn is flashing, the left turn is flashing but, even dimmer than the right. All the bulbs are brand new 3057, the connections are good, fuses are good, and there appears to be no break in the wires, as far as I could see. What could this be? Thanks.
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Sunday, October 25th, 2020 AT 12:07 PM (Merged)
Tiny
MERLIN2021
  • MECHANIC
  • 17,250 POSTS
Generally if the lights are dim, there is a ground problem, check the grounds for the tails.
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Sunday, October 25th, 2020 AT 12:07 PM (Merged)
Tiny
STEVESBS1
  • MEMBER
  • 11 POSTS
Check the circuit boards on tail lights they go bad all the time you can purchase them at any chain parts store
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Sunday, October 25th, 2020 AT 12:07 PM (Merged)
Tiny
MERLIN2021
  • MECHANIC
  • 17,250 POSTS


https://www.2carpros.com/forum/automotive_pictures/62217_gmc_1.jpg



https://www.2carpros.com/forum/automotive_pictures/62217_gmcb_1.jpg


Check black wires.


https://www.2carpros.com/forum/automotive_pictures/62217_tail_light_Boards_GM_1.jpg


Here's the circuit boards, about 15.00 dollars, if it turns out that way!
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Sunday, October 25th, 2020 AT 12:07 PM (Merged)
Tiny
SKGRAY0112
  • MEMBER
  • 3 POSTS
  • 1989 CHEVROLET SILVERADO
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 133,000 MILES
My left turn signal and my hazard lights will not flash when my headlights are on. If I turn off the headlights, everything works fine. I tried replacing the flasher but nothing changed. I also noticed a day later that when my left turn signal is on, the display that indicates fan speed and heater temperature flashes along with the turn signal. Not sure if these two problems are related. Any thoughts?
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Sunday, October 25th, 2020 AT 12:07 PM (Merged)
Tiny
YAHOO4
  • MEMBER
  • 34 POSTS
Check your parking light bulbs one by one removing each one and looking for the element th be broken, if any bulbs have a chrome look to them or a broken element replace with the proper bulb.
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Sunday, October 25th, 2020 AT 12:07 PM (Merged)
Tiny
BARCAR38
  • MEMBER
  • 3 POSTS
  • 1988 CHEVROLET SILVERADO
I have a 1988 chev truck V8 4x4, all lights work but turn signals don't work. But come on when the 4 way flashers are turned on. ( No fuses are blown or blow out.) I tried replacing the tailights and the main harness in the back of the truck, changed the steering column and I am at my wits end trying to trace this problem down. Any help would be gratefully aprieciated. Thanks.
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Sunday, October 25th, 2020 AT 12:08 PM (Merged)
Tiny
DOCFIXIT
  • MECHANIC
  • 18,828 POSTS
Suspect faulty turn signal switch
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Sunday, October 25th, 2020 AT 12:08 PM (Merged)
Tiny
BARCAR38
  • MEMBER
  • 3 POSTS
Hey thanks for the quick reply. How hard is it to tear the column apart and check or would it be easier to change steering columns?
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Sunday, October 25th, 2020 AT 12:08 PM (Merged)
Tiny
BARCAR38
  • MEMBER
  • 3 POSTS
Also if their is a short, fault or break in the system, would it cause the system to not work in some places, but not others.
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Sunday, October 25th, 2020 AT 12:08 PM (Merged)

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