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Turn signal flasher location

Tiny
DOUGLASXIE
  • MEMBER
  • 2004 OLDSMOBILE ALERO
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 87,230 MILES
When turn signal is on, it clicks, but when it is turned off, it still produces clicking noise for a while. The light was off, though. It does not affect the turn signal on and off but the continual clicking noise disturbs me. How can I fix this problem?
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Tuesday, November 2nd, 2010 AT 1:41 PM

27 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Hi douglasxie, Welcome to 2CarPros.com.

The Hazard Flasher and Turn Signal Flasher have been integrated with the Hazard Lamp Switch could be sticking

Located at no.4 see below


https://www.2carpros.com/forum/automotive_pictures/12900_hazard_switch_alero_1.jpg



HAZARD WARNING SWITCH REPLACEMENT - ON VEHICLE

REMOVAL PROCEDURE


https://www.2carpros.com/forum/automotive_pictures/12900_h1_25.jpg



Remove the center air louver deflector. Refer to Air Deflector Louver Replacement - Center Vent.
Remove the instrument panel cluster.
Remove the hazard warning switch bezel from the instrument panel using a small-flat bladed tool to release the retainers.


https://www.2carpros.com/forum/automotive_pictures/12900_h2_24.jpg



Remove the left side bolt from the hazard warning switch through the instrument panel cluster pocket.


https://www.2carpros.com/forum/automotive_pictures/12900_h3_7.jpg



Remove the right side and center lower bolts from the hazard warning switch through the center air louver deflector pocket.


https://www.2carpros.com/forum/automotive_pictures/12900_h4_6.jpg



Reposition the hazard warning switch from the instrument panel to access the electrical connector.


https://www.2carpros.com/forum/automotive_pictures/12900_h5_4.jpg



Disconnect the electrical connectors from the hazard warning switch.
Remove the hazard warning switch from instrument panel.
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Tuesday, November 2nd, 2010 AT 2:17 PM
Tiny
DOUGLASXIE
  • MEMBER
  • 2 POSTS
Worked perfect! Thanks a lot. Douglasxie
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Tuesday, November 2nd, 2010 AT 2:28 PM
Tiny
RIVERMIKERAT
  • MECHANIC
  • 6,110 POSTS
Nice work, we are here to help, please use 2CarPros anytime.

Cheers
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Sunday, September 25th, 2011 AT 1:17 AM
Tiny
PLAVOR
  • MEMBER
  • 1 POST
  • 2004 OLDSMOBILE ALERO
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 61,000 MILES
Where is turn signal flasher unit and how do I replace it?
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Monday, September 10th, 2018 AT 10:55 AM (Merged)
Tiny
FRENCHY2004
  • MEMBER
  • 4 POSTS
If you have not found it it should be a part of your hazards button. It should be one assembly. You will have to take the center vent out.
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Monday, September 10th, 2018 AT 10:55 AM (Merged)
Tiny
KENNEYG1
  • MEMBER
  • 1 POST
  • 2001 OLDSMOBILE ALERO
Four cylinder.

Where is the turn signal flasher located?
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Monday, September 10th, 2018 AT 10:55 AM (Merged)
Tiny
BLUELIGHTNIN6
  • MECHANIC
  • 16,542 POSTS
Behind center of instrument panel.
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Monday, September 10th, 2018 AT 10:55 AM (Merged)
Tiny
SOLDSALERO
  • MEMBER
  • 12 POSTS
  • 2004 OLDSMOBILE ALERO
  • 30,000 MILES
1. From previous questions, is this a problem with the turn signal flasher unit which is part of the hazards button that needs to be replaced. It should be one assembly. You'll have to take the center vent out.

.2. How long and complicated is this procedure. Do I need to get the work done by an (expensive) GM mechanic, or can I take it to a backyard mechanic?

3. Can the part be purchased by any generic auto parts store, or do I have to go to GM to get it.

Thanks
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Friday, June 26th, 2020 AT 12:02 PM (Merged)
Tiny
SEANGRANT00
  • MECHANIC
  • 334 POSTS
What are you trying to replace?

Sean
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Friday, June 26th, 2020 AT 12:02 PM (Merged)
Tiny
SOLDSALERO
  • MEMBER
  • 12 POSTS
The part that activates the turn signal flashers. Currently it happens non frequently.

I have noticed that if I gently thump the dashboard console in a certain place (in the middle area), the flashers will turn on/reactivate,

Thanks for your assistance.
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Friday, June 26th, 2020 AT 12:02 PM (Merged)
Tiny
SEANGRANT00
  • MECHANIC
  • 334 POSTS
It sounds more like a short then the switch itself. I would pull the cover off the steering console and check for any lose connections. Also check the terminals on the turn switch.

Sean
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Friday, June 26th, 2020 AT 12:02 PM (Merged)
Tiny
SOLDSALERO
  • MEMBER
  • 12 POSTS
When I checked my Haynes manual about the steering console. It mentioned the air bag.

Must I deactivate it before pulling off the cover (which I believe is in the engine compartment)?

If so, this sounds like something someone with limited mechanical knowledge and tools like myself should not be doing - correct?

Else, can I just unscrew the bolts to take the cover off and check for loose connections?

Thanks
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Friday, June 26th, 2020 AT 12:02 PM (Merged)
Tiny
GWACO
  • MEMBER
  • 1 POST
  • 2002 OLDSMOBILE ALERO
  • 4 CYL
  • FWD
  • AUTOMATIC
How to replace the Turn Signal Flasher on my car
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Friday, June 26th, 2020 AT 12:02 PM (Merged)
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
The hazard and turn signal flashers have been integrated with the hazard switch.

Service and Repair

HAZARD WARNING SWITCH REPLACEMENT - ON VEHICLE

REMOVAL PROCEDURE
Remove the hazard warning switch bezel from the Instrument Panel (IP) using a small-flat bladed tool to release the retainers.
Remove the IP center air outlet.
Remove the IP cluster.
Remove the left side bolt from the hazard warning switch through the instrument panel cluster pocket.
Remove the right side and center lower bolts from the hazard warning switch through the center air outlet opening.
Reposition the hazard warning switch to the center air outlet opening.
Disconnect the electrical connectors from the hazard warning switch.
Remove the hazard warning switch from the IP.
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Friday, June 26th, 2020 AT 12:02 PM (Merged)
Tiny
RAWELLS
  • MEMBER
  • 1 POST
  • 2003 OLDSMOBILE ALERO
Electrical problem
2003 Oldsmobile Alero 6 cyl Front Wheel Drive Automatic

I can't find the flasher unit on this car. I have removed the lower dash covers and also the gage surrond and still can't locate it
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Friday, July 17th, 2020 AT 4:25 PM (Merged)
Tiny
BLUELIGHTNIN6
  • MECHANIC
  • 16,542 POSTS
Look under the steering column, above the brake pedal. There might be a panel with one screw. Unscrew the panel and on back of panel, there should be a diagram. This will tell you where the signal/4-way flasher relay is located.

The flasher is all part of the hazard switch up on the dash.
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Friday, July 17th, 2020 AT 4:25 PM (Merged)
Tiny
FIREDAD_2000
  • MEMBER
  • 1 POST
  • 2002 OLDSMOBILE ALERO
  • 2.2L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 157,000 MILES
All bulbs good. Signals all work fine when headlights off. Have replaced hazard flasher twice.
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Friday, July 17th, 2020 AT 4:25 PM (Merged)
Tiny
CARADIODOC
  • MECHANIC
  • 33,910 POSTS
You're describing the classic symptoms of a bad ground circuit. Signal lamp operation is different with the tail lights turned on or off. There's two clues you might be able to observe that will verify this. The first is if you look closely, you'll see the rear lights are not as bright as they should be. The second clue might not work here since both rear sides are affected, but turn on the left turn signal, then while it is flashing, remove the right rear signal bulb(s). If the left side stops lighting up when the right bulbs are unplugged, it is because the ground circuit on the left side is broken. Current goes through the left signal bulb's filament, then can't find a path to ground, but it doubles back through the smaller tail light filament, then over to the tail light filament on the right side, then finds an alternate path to ground on that side. You actually have three filaments in series, which is why the bulbs aren't full brightness.

If you can reach the terminals in the bulb's socket, you can take voltage measurements there too. Those readings are only valid when the bulb is installed, so you have to be able to get the meter's probe in there next to the terminals. With the circuits turned on, two of the four terminals on the common 3057 bulb must always have 0.0 volts. The other two will have 12 volts when they're turned on. You don't even have to concern yourself with which terminal is which for now. If you find roughly four to six volts on any terminal, that is proof the ground circuit has a break in it.
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Friday, July 17th, 2020 AT 4:25 PM (Merged)
Tiny
J.STIEG
  • MEMBER
  • 352 POSTS
  • 2001 OLDSMOBILE ALERO
  • 150,000 MILES
Where is the flasher relay located on a 01 Olds Alero
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Friday, July 17th, 2020 AT 4:25 PM (Merged)
Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
Hello,

The flasher is integrated into the hazard flasher/switch. Here is a diagram (below) that show its location and how to change it.

Pull radio Trim Panel/facade away from dash to access Hazard switch. Taking the air vent out is another way of accessing it.

A Common problem is the flasher timer will click like the turn signals are on but the turn lever is in the neutral position.

Before condemning the Hazard switch/timer, first remove steering column cover to access Turn signal switch.

Remove the 4 wire connector on top of switch.

If Clicking stops then replace or disassemble switch to clean contacts.

The contacts wear and cause a fine copper connection and produce a
situation as if the switch was activated.

Check out the diagrams (Below)

Please let us know if you need anything else to get the problem fixed.

Cheers
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