C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Turn Signal 1990 C4 Automatic Base Model

Thread Tools
 
Search this Thread
 
Old Mar 30, 2024 | 11:29 PM
  #1  
altownsend's Avatar
altownsend
Thread Starter
Instructor
Conversation Starter
All Eyes On Me
 
Joined: Jul 2020
Posts: 196
Likes: 14
From: Houston Texas
Default Turn Signal 1990 C4 Automatic Base Model

1990 C4 Automatic Base Model

My left turn signal stopped working. the right turn signal works fine, no problem. I checked it out and noticed that when the car is running, The left turn signal light in the dash is on constant, no blinking. The side marker, left front side is on constant. The left rear turn signal is on constant, without me turning the signal on.

Can anyone tell me what their fix was if they had this same issue. Thanks

Last edited by altownsend; Mar 31, 2024 at 02:13 AM.
Reply
Old Mar 31, 2024 | 07:39 PM
  #2  
altownsend's Avatar
altownsend
Thread Starter
Instructor
Conversation Starter
All Eyes On Me
 
Joined: Jul 2020
Posts: 196
Likes: 14
From: Houston Texas
Default Turn Signal

Originally Posted by altownsend
1990 C4 Automatic Base Model

My left turn signal stopped working. the right turn signal works fine, no problem. I checked it out and noticed that when the car is running, The left turn signal light in the dash is on constant, no blinking. The side marker, left front side is on constant. The left rear turn signal is on constant, without me turning the signal on.

Can anyone tell me what their fix was if they had this same issue. Thanks
My left turn signal was not working. I checked the bulbs and they were okay, so I changed them all any way. The turn signal now works, but if blinks/flashes at half the speed as the right. Anyone know what is going on with this?

Reply
Old Jan 8, 2026 | 12:25 AM
  #3  
altownsend's Avatar
altownsend
Thread Starter
Instructor
Conversation Starter
All Eyes On Me
 
Joined: Jul 2020
Posts: 196
Likes: 14
From: Houston Texas
Default

Okay, I hope that people in the know reads this request.

Question: Where exactly is the turn signal flasher on the 1990 C4 Corvette?

Some have posted, with video, that the turn signal flasher is in the dash behind the climate control. Others have stated that the turn signal flasher is under the kick panel on the passenger side of the car. Still, others show the signal light flasher to be on the driver side under the kick panel.

So, for the 1990 C4 Corvette, where is the signal light flasher? Thanks, folks
Reply
Old Jan 8, 2026 | 12:58 AM
  #4  
Natty C's Avatar
Natty C
Melting Slicks
Community Builder
Community Influencer
Community Favorite
Top Answer: 1
 
Joined: May 2019
Posts: 3,241
Likes: 1,403
From: Mid-Atlantic
2025 C4 of the Year Finalist - Unmodified
2023 C4 of the Year Finalist - Unmodified
2022 C4 of the Year Finalist - Unmodified
2021 C4 of the Year - Unmodified Finalist
Default

Originally Posted by altownsend
Okay, I hope that people in the know reads this request.

Question: Where exactly is the turn signal flasher on the 1990 C4 Corvette?

Some have posted, with video, that the turn signal flasher is in the dash behind the climate control. Others have stated that the turn signal flasher is under the kick panel on the passenger side of the car. Still, others show the signal light flasher to be on the driver side under the kick panel.

So, for the 1990 C4 Corvette, where is the signal light flasher? Thanks, folks
It's under the driver side panel.

I tried to upload a screenshot from my '90 factory service manual illustrating this but the upload freezes at 90% upload for some reason.

Not messing around with that Mickey Mousery if it's not gonna work right, so you'll just have to take my word for it.

I've relpaced that flasher on my 90.

It's on the driver side under the panel.


So far as the slow blinker on one particular side goes, there are a few different possibilities as to why.

Here's an older thread regarding that specific problem...

https://www.corvetteforum.com/forums...gnal-slow.html





Last edited by Natty C; Jan 8, 2026 at 02:53 PM.
Reply
Old Jan 8, 2026 | 05:32 AM
  #5  
altownsend's Avatar
altownsend
Thread Starter
Instructor
Conversation Starter
All Eyes On Me
 
Joined: Jul 2020
Posts: 196
Likes: 14
From: Houston Texas
Default

Thank you all for your creative solutions. My presumption was the flasher. I just did not know where it was in the car. One Youtube video content creator revealed this, and I went in.

My turn signal defect was the flasher. I had a spare, installed it, and the turn signals are working again.

Solution, replace the turn signal flasher.
Reply

Get notified of new replies

To Turn Signal 1990 C4 Automatic Base Model





All times are GMT -4. The time now is 08:57 PM.

story-0
10 Ugly Corvettes That We Still Kinda Love

Slideshow: 10 ugly Corvettes that we still kinda love.

By Joe Kucinski | 2026-06-03 10:34:17


VIEW MORE
story-1
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

A lot of money has changed hands at the online auction house over the years.

By Brett Foote | 2026-06-03 10:21:50


VIEW MORE
story-2
10 Things Every Corvette Owner Needs (2026 Edition)

Slideshow: 10 great gifts Corvette enthusiasts actually want for Father's Day!

By Michael S. Palmer | 2026-06-03 15:43:40


VIEW MORE
story-3
8 Most "Only Corvette Owners Understand" Quirks and Problems

Slideshow: These are the quirks, annoyances, and oddly lovable problems that every Corvette owner eventually learns to live with.

By Pouria Savadkouei | 2026-05-28 09:31:39


VIEW MORE
story-4
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

Slideshow: 10 reasons why the C6 Z06 is still a performance benchmark after 20 years.

By Joe Kucinski | 2026-05-27 17:20:09


VIEW MORE
story-5
How Much Horsepower Every Corvette Engine "LOST" in 1972

Slideshow: How much horsepower every Corvette engine lost in 1972.

By Joe Kucinski | 2026-05-27 16:54:53


VIEW MORE
story-6
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

Slideshow: How to Protect A Convertible Top: 10 DOs & DON'Ts

By Michael S. Palmer | 2026-04-03 00:00:00


VIEW MORE
story-7
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-8
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-9
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE