[SilverSurfer18]

The past few days when I park at work it is still dark outside and i noticed my blinkers are on while i am parked and the car is idling. There is no indication on the instrument cluster that they are on but it lights up the wall in front of my car so i know they are on. Yesterday a co-worker told me my right blinker was on and today while in the car i noticed my left blinker was on. I turned the hazards on and back off and it seemed to have fixed it. Any body else have this issue or know why this would be happening? I checked the trunk for water since that seems to be a common issue and no sign of water being in there. Thanks!

[Altered Carbon]

Wrong blinker fluid...

But seriously, I honestly have no clue, I haven't heard of anyone having this problem. Hopefully someone can chime in and help you out.

[Jeb114]

That's what warranties are for!!

[ctrlz]

Did u install aftermarket LED lights anywhere in the car?

[SilverSurfer18]

Originally Posted by Jeb114

That's what warranties are for!!

Been through something similar with this car and if they cannot recreate the problem they will do nothing at all about it. It is hit or miss when it does it

[SilverSurfer18]

Originally Posted by ctrlz

Did u install aftermarket LED lights anywhere in the car?

Nope, only appearance mods are wheels.

[SilverSurfer18]

Tire Fill Alert (If Equipped)
This feature provides visual and audible
alerts outside the vehicle to help when
inflating an underinflated tire to the
recommended cold tire pressure.
When the low tire pressure warning light
comes on:
1. Park the vehicle in a safe, level place.
2. Set the parking brake firmly.
3. Place the vehicle in P (Park).
4. Add air to the tire that is underinflated.
The turn signal lamp will flash.
5. When the recommended pressure is
reached, the horn sounds once and the
turn signal lamp will stop flashing and
briefly turn solid.



So turns out this is a newer feature that tells you from outside the car that your tires are low... This is from the 2021 owner manual LOL got cold and my tires are sitting at 29 lbs so i guess once i put air in them it will go away...

[ctrlz]

2021, so doubt it's battery unless you are having other weird electrical issues.

Turn signals are probably turned on by the BCM. I'm not sure if the blinkers would keep working with the car off with the exception of hazard lights. I suspect not, but haven't verified that. So I doubt the steering column switch module is sending false signals to the BCM.

Since you are getting one side on at a time, I also doubt it's the hazard light switch, or false signal from that switch.

Time for google to see if this has shown up other GM vehicles.

EDIT: Just saw you beat my post. Reading the manual scores again! Who woulda thunk it?

[SilverSurfer18]

Originally Posted by ctrlz

2021, so doubt it's battery unless you are having other weird electrical issues.

Turn signals are probably turned on by the BCM. I'm not sure if the blinkers would keep working with the car off with the exception of hazard lights. I suspect not, but haven't verified that. So I doubt the steering column switch module is sending false signals to the BCM.

Since you are getting one side on at a time, I also doubt it's the hazard light switch, or false signal from that switch.

Time for google to see if this has shown up other GM vehicles.

Just posted an update. Turns out its a tire fill alert (didnt even know that was a real thing). I can turn a wrench but all these new tech features sure make me feel stupid sometimes LOL

[ctrlz]

Originally Posted by SilverSurfer18

Turns out its a tire fill alert (didnt even know that was a real thing). LOL

This sounds like a good feature once you know it's there.
So it will be helpful for 0.01% who buy the car, and confuse everyone else.

Did you get an OnStar email too? I got one of those once when my tire was punctured and leaked out overnight. I think my OnStar was technically expired at that point. But I think manufacturers have gone to extremes following the Ford/Firestone fiasco in the early 2000's.

[SilverSurfer18]

Originally Posted by ctrlz

This sounds like a good feature once you know it's there.
So it will be helpful for 0.01% who buy the car, and confuse everyone else.

Did you get an OnStar email too? I got one of those once when my tire was punctured and leaked out overnight. I think my OnStar was technically expired at that point. But I think manufacturers have gone to extremes following the Ford/Firestone fiasco in the early 2000's.

YES i did yesterday morning. I believe mine is expired too, I have had it right at a year.

And honestly i thought the same. I dont carry my pressure gauge so i have had to put air in and run to look at the dash and go back and put more in, etc. lol nice to know now that i know!

[LT4Greg]

Did your dash have the low pressure tire alert lit up? My 2017 does that to let me know I have a tire with low air pressure. For several months I have been dealing with one rear tire that keeps losing air but haven’t taken it into a tire store to get it checked/repaired.