Turn signal flasher location? Signals not working

Tiny
GPAGLI
  • MEMBER
  • 1995 CHEVROLET CHEYENNE
  • V8
  • 2WD
I have a 1995 chevrolet c2500 pickup. I wired a trailer recently and once done, turn signal no longer works on truck. Hazards work on truck and trailer, lights and brake and reverse on truck but no turn signal. I replaced the flasher but no luck. Flasher does not even click! I checked fuses I think.
Sunday, July 24th, 2011 AT 12:37 AM

36 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
It could be defective flasher here is its location to make sure you are changing the right one also here are the blinker wiring diagrams so you can see how the system works as well.

https://www.2carpros.com/articles/how-to-check-wiring

Check out the diagrams (Below). Please let us know what you find. We are interested to see what it is.
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Sunday, July 24th, 2011 AT 12:54 AM
Tiny
GPAGLI
  • MEMBER
  • 7 POSTS
I tried 3 different new turn signal flashers, hazards work fine. Note that when I say I wired a trailer, the truck already had a four prong trailer plug on it so I did not wire the truck, just wired trailer lights on a trailer and connected 4 prong to the truck existing 4 prong.
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Sunday, July 24th, 2011 AT 1:02 AM
Tiny
PROTECH1980
  • MEMBER
  • 901 POSTS
Check Fuse #16 15amp fuse in the i/p fuse block

This guide can help as well.

https://www.2carpros.com/articles/turn-signals-not-working-blinker

Please run down this guide and report back
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Sunday, July 24th, 2011 AT 1:16 AM
Tiny
GPAGLI
  • MEMBER
  • 7 POSTS
I disconnected trailer wiring and fuses seem good. Again, hazards work, reverse and brake lights work. If I press down hard on hazard light button and hold, turn signal flasher clicks! And not sure why since there is a seperate hazard flasher and turn signal flasher
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Sunday, July 24th, 2011 AT 1:19 AM
Tiny
PROTECH1980
  • MEMBER
  • 901 POSTS
Check for voltage coming into turn signal switch purple wire(12volt), if ok activate turn signal, looking for voltage coming out of turn signal switch on either light blue or yellow (left signal). Or dark green/dark blue(right signal). If you have voltage on purple wire and nothing coming out on the mentioned wires, suspect turn sig. Switch
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Sunday, July 24th, 2011 AT 2:29 AM
Tiny
GPAGLI
  • MEMBER
  • 7 POSTS
I fixed it the turn signal switch has bad! Thanks for your help on this I love this site.
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Sunday, July 24th, 2011 AT 2:34 AM
Tiny
PROTECH1980
  • MEMBER
  • 901 POSTS
Glad you could get it fixed, that kind of problem can be tough. Please use 2CarPros anytime we are here to help
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Sunday, July 24th, 2011 AT 2:50 AM
Tiny
GEORGE THOMPSON
  • MEMBER
  • 2 POSTS
  • 1995 CHEVROLET CHEYENNE
  • 301,000 MILES
When I bought the truck I had the turn signal switch replaced thinking that was the problem but that did not fix it
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Monday, December 17th, 2018 AT 5:54 PM (Merged)
Tiny
GEORGE THOMPSON
  • MEMBER
  • 2 POSTS
Also when I had the new switch installed he told me part of the ignition had low power
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Monday, December 17th, 2018 AT 5:54 PM (Merged)
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Check your fuses in the ip panel like #7 for the power outlets and also maxi fuse 7 for the wiper and power outlet in the underhood fuse box. There is also a circuit breaker or should be in teh ip fuse box for the power outlet. Check fuse 16 in ip box for turn signals then try replacing the flasher behind the centrof the i/p Also ther eis a stoplamp relay underhood l/r center of engine. Check all your grounds on ip to make sure they are tight and clean. Same thing with engine and body grounds.
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Monday, December 17th, 2018 AT 5:54 PM (Merged)
Tiny
DANNY919
  • MEMBER
  • 8 POSTS
  • 1997 CHEVROLET CHEYENNE
  • 4.3L
  • V6
  • 2WD
  • AUTOMATIC
  • 284,000 MILES
Changed relays and fuses still nothing and my truck will not hold charge (i need to jump start it) to get it on is my daily driver really need to fix quickly if you have any idea what the problem is I would greatly appreciate it thank you have a nice night/day :)
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Monday, December 17th, 2018 AT 5:54 PM (Merged)
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Check battery for condition including load test most places do for free replace the turn signal flasher in convenience center lh side of dash near steering column. Then do a parasitic draw test. Our site how to repair electrical battery item 9
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Monday, December 17th, 2018 AT 5:54 PM (Merged)
Tiny
DANNY919
  • MEMBER
  • 8 POSTS
Thank You For the Advice Hmac300 Thanks
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Monday, December 17th, 2018 AT 5:54 PM (Merged)
Tiny
ANGELAMATEO
  • MEMBER
  • 3 POSTS
  • 1993 CHEVROLET CHEYENNE
1993 Chevy Cheyenne

My left side rear turn signal and brake light are not working. When I try to use the signal, the inside arrow blinks very fast. The front left turn signal works fine. We changed the bulb and the fuse is fine.
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Monday, December 17th, 2018 AT 5:54 PM (Merged)
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Check and test the brake switch if okay-test the turn and hazard switch
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Monday, December 17th, 2018 AT 5:54 PM (Merged)
Tiny
ANGELAMATEO
  • MEMBER
  • 3 POSTS
There is power going to the plug in but the light just won't work. The front turn signal blinks really fast
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Monday, December 17th, 2018 AT 5:54 PM (Merged)
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Check the bulbs for an open filament and also the ground circuit
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Monday, December 17th, 2018 AT 5:54 PM (Merged)
Tiny
ANGELAMATEO
  • MEMBER
  • 3 POSTS
Did that. Took the "circuit board" (?) From the other side and tried it on that side and it worked fine so tomorrow I'm going to replace the one on the side that isn't working. Thanks for your help.
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Monday, December 17th, 2018 AT 5:54 PM (Merged)
Tiny
JCLOYD1
  • MEMBER
  • 4 POSTS
  • 1996 CHEVROLET CHEYENNE
  • 5.0L
  • V8
  • 2WD
  • AUTOMATIC
  • 133,000 MILES
I turn on my r turn signal and it does not flash on my cluster but it does work both front and back
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Monday, December 17th, 2018 AT 5:54 PM (Merged)
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
The light may be burnt out on cluster or it may be a cluster going bad.
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Monday, December 17th, 2018 AT 5:54 PM (Merged)

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