Turn signal malfunction

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Jul 7, 2017 | 01:51 PM

02VetteVert

Thread Starter

8th Gear

Joined: Jul 2017

Posts: 8

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Turn signal malfunction

A returning member. Have a question. Own an 02 Vert and my turn signals randomly won't work. No signals on lamps and no flashers on dash. But then they return, again, randomly. Fuse is not blown. Anyone else ever experience this problem??

Jul 7, 2017 | 01:59 PM

Corvette#2

Safety Car

Joined: Jan 2015

Posts: 3,830

Likes: 394

From: Rocky Mountains

It's a common problem.

The hazard flasher relay is probably going bad. The part is not expensive but it's a bit of pain to get to.

Jul 7, 2017 | 02:01 PM

02VetteVert

Thread Starter

8th Gear

Joined: Jul 2017

Posts: 8

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Quote:

Originally Posted by Corvette#2

It's a common problem.

The hazard flasher relay is probably going bad. The part is not expensive but it's a bit of pain to get to.

OK, Thanks. So where is it?

Jul 7, 2017 | 02:06 PM

zachaeous

Melting Slicks

Joined: Mar 2012

Posts: 2,800

Likes: 456

From: USA

It is a common problem as stated above. You can either replace the factory flasher or by pass it. If you bypass it you have solved the problem once and for all.

Here is a link to the bypass method:
https://www.corvetteforum.com/forums...post1569256474

Go to post #48 and it describes the procedure. I did this to my 2001 three years ago and not a problem since.

Good luck with your repair.

The factory turn signal flasher is located in the hazard flasher. It is a combo unit.

Last edited by zachaeous; Jul 7, 2017 at 02:09 PM.

Jul 7, 2017 | 02:27 PM

02BlownZ06

Drifting

Joined: Nov 2016

Posts: 1,820

Likes: 411

From: Somewhere in the middle of Kansas

I had the same problem. Replaced the flasher assembly and that cured it.

Jul 7, 2017 | 03:21 PM

JR-01

Le Mans Master

Joined: Sep 2013

Posts: 8,900

Likes: 1,074

From: Wisconsin

For a temp fix, cycle the e-flasher a few times. I do have the same problem. Bought a flasher, just haven't got around to digging into it.

Jul 8, 2017 | 12:06 PM

GCG

Melting Slicks

Joined: Jan 2009

Posts: 3,275

Likes: 739

From: Miami FL

A hyperflash harness should fix your problem and, as an added bonus, will allow you to install LEDs in the future with no hyperflashing.

Check this one out. It's completely plug-and-play: no splicing or anything.

Jul 8, 2017 | 12:14 PM

JR-01

Le Mans Master

Joined: Sep 2013

Posts: 8,900

Likes: 1,074

From: Wisconsin

Quote:

Originally Posted by GCG

I should go that route. How much of the dash do you have to remove? Just that lower panel under the steering column?

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Jul 8, 2017 | 01:19 PM

Time for a C-5

Burning Brakes

Joined: Feb 2015

Posts: 987

Likes: 224

From: Motor City, MI

I bought the flasher and had a car audio shop do the install. They charged me $40+/- and I was out of there in a half hour.

Jul 8, 2017 | 01:48 PM

#10

GCG

Melting Slicks

Joined: Jan 2009

Posts: 3,275

Likes: 739

From: Miami FL

Quote:

Originally Posted by JR-01

I should go that route. How much of the dash do you have to remove? Just that lower panel under the steering column?

Yes, just the knee bolster

Jul 8, 2017 | 03:05 PM

#11

JR-01

Le Mans Master

Joined: Sep 2013

Posts: 8,900

Likes: 1,074

From: Wisconsin

Quote:

Originally Posted by GCG

Yes, just the knee bolster

Thanks!
I ordered one from Amazon. Will get it Monday so I can get it in for a trip we have planned. Can get a little hairy with turn signals working only when they want to.

Jul 9, 2017 | 12:22 PM

#12

aj98

Melting Slicks

Joined: Dec 2005

Posts: 2,017

Likes: 169

From: SE VA VA

If you have large(r) arms, you may not be able to get to the unit from the bottom.
I tried that route and it didn't work for me.

Ended up taking out everything from the center console to get to the switch.

Jul 10, 2017 | 11:20 AM

#13

waupachino

Melting Slicks

Joined: Jan 2005

Posts: 2,409

Likes: 34

From: St. Louis Missouri

Just did this on my 00, using the knee bolster info from this forum. Hardest part was getting the old Hazard switch to release from the dash. Small pocket knife to release the upper tab and a swift hit with a screw driver on the front of the switch got it to release, 20min job and never did it before.

Jul 10, 2017 | 12:31 PM

#14

JR-01

Le Mans Master

Joined: Sep 2013

Posts: 8,900

Likes: 1,074

From: Wisconsin

Quote:

Originally Posted by GCG

Yes, just the knee bolster

Just got the harness and I am looking over the instructions. It shows removing fog lamp trunk release switch and interior temp sensor cover plate. Why? Do those need to be removed to remove the knee bolster?
Should I disconnect the battery before I start or is that not necessary?

Last edited by JR-01; Jul 10, 2017 at 12:39 PM.

Jul 10, 2017 | 01:38 PM

#15

deejbee

Racer

Joined: Aug 2016

Posts: 310

Likes: 25

From: Edmonton AB

Quote:

Originally Posted by JR-01

I did mine last summer and it was easy... only caveat is the flasher is a bit quieter but not a deal breaker.

I can't recall the exact procedure, but behind the temp sensor cover plate is a screw holding that bolster on. Be really careful taking the sensor cover off as the tabs seem to break easily. I had to replace mine. It was my fault.

As for the trunk release switch, I believe there is a screw in behind there too but don't quote me on it. Switch should just pop out.

EDIT: I never disconnected my battery. Nothing got damaged.

Last edited by deejbee; Jul 10, 2017 at 01:39 PM.

Jul 10, 2017 | 03:11 PM

#16

JR-01

Le Mans Master

Joined: Sep 2013

Posts: 8,900

Likes: 1,074

From: Wisconsin

All done......going for test drive to make sure everything else works.
THANKS guys for your help!

Jul 10, 2017 | 03:52 PM

#17

JR-01

Le Mans Master

Joined: Sep 2013

Posts: 8,900

Likes: 1,074

From: Wisconsin

Got an HVAC code BO338H. I am guessing it came up because I turned the car on to check turn signals before I had hooked sensor up. Otherwise all is good.