2024 Turn Signals Not Working Properly at Times

newdude · September 29, 2023

On 9/8/2023 at 6:17 PM, madweazl said:

For those having the turn signal issue, where was the truck built? Ours if a Flint MI build. Curious if we can maybe isolate to a part at one plant or just BCM (or whatever module it would be) fault/programming.

Not plant specific nor is this an HD specific issue. 1/2 tons are doing this same headlights issue on the LED headlights and they are built in Mexico, Indiana and Canada.

Its an LED headlights issue or something controling them.

nhawkins48 · October 3, 2023

Does anyone know if there has been a service bulletin regarding the issue?

This is my first chevy and I am not filled with confidence of there ability to

fix it after reading this thread.

jd64 · October 5, 2023

LIGHTING PROBLEMS FINALLY SOLVED. i have waited so long to post this so that i was as sure as possible everything was working properly since the problems were so intermittent. About 7-8 weeks ago both of my headlights were replaced to fix the turn signal fast flash problem, which it did but the new right side headlight had a new problem. the DRL would flash sometimes when the headlights were on. My dealer opened a TAC case and GM told them to replace the right headlight again. They were on backorder for about 3-4 weeks. 3 weeks ago the new right side came in and 2 weeks ago it was replaced. so far everything is fine with the DRL.

i have been dealing with this lighting problem since the first 100 miles on the truck in April. the steering box had a leak and was replaced but no other issues with the truck, it has been EXCELLENT, i hope this lighting information helps some of the other guys out that are having the same problems.

CRApex · October 5, 2023

Two new headlamps on order for mine. The left front has gone out (fast signal flash) about 5-6 times now.

newdude · October 5, 2023

On 10/3/2023 at 5:59 PM, nhawkins48 said:

Does anyone know if there has been a service bulletin regarding the issue?

This is my first chevy and I am not filled with confidence of there ability to

fix it after reading this thread.

No, not yet. I'm sure there will be shortly once they do enough in field investigations on these as I'm sure GM will be calling back headlight assemblies for evaluation to see what is exactly going on.

So far its faulty headlight assemblies so a supplier issue with the lamp or components inside the lamp, and also poor terminal tension at the connectors to the headlight(s) and a couple other spots they are aware of.

Edited October 5, 2023 by newdude

UWSkier · October 5, 2023

I've only ever had the fast signal flash when towing a trailer, and typically it's 4 or 5 fast flashes before it sorts itself out and flashes normally.

Are you guys with the issue having the fast flash without a trailer attached, and is it flashing fast for the duration of that activation? Trying to figure out if I have this issue or not.

Paints-n-cows · October 5, 2023

17 minutes ago, UWSkier said:

I've only ever had the fast signal flash when towing a trailer, and typically it's 4 or 5 fast flashes before it sorts itself out and flashes normally.

Are you guys with the issue having the fast flash without a trailer attached, and is it flashing fast for the duration of that activation? Trying to figure out if I have this issue or not.

Mine was by itself at about 350 miles. Sometimes it would do it and sometimes it wouldn't. Once in awhile. It would clear up and other times it wouldn't.

So far the replacements seem to be working. They were replaced in May and about 3,000 miles have elapsed.

chwilliams · October 5, 2023

2 hours ago, UWSkier said:

I've only ever had the fast signal flash when towing a trailer, and typically it's 4 or 5 fast flashes before it sorts itself out and flashes normally.

Are you guys with the issue having the fast flash without a trailer attached, and is it flashing fast for the duration of that activation? Trying to figure out if I have this issue or not.

I've had both scenarios. The trailering variety rights itself as you mentioned. Had the non-trailering variety again this morning, and it doesn't stop until I turn off the truck and walk away for a few minutes, I think it's time to call it in.

Paints-n-cows · October 5, 2023

8 minutes ago, chwilliams said:

I've had both scenarios. The trailering variety rights itself as you mentioned. Had the non-trailering variety again this morning, and it doesn't stop until I turn off the truck and walk away for a few minutes, I think it's time to call it in.

The headlights are $1500 each and are going to be way backordered now.

I think you are silly if you wait

CRApex · October 9, 2023

On 10/5/2023 at 12:33 PM, UWSkier said:

I've only ever had the fast signal flash when towing a trailer, and typically it's 4 or 5 fast flashes before it sorts itself out and flashes normally.

Are you guys with the issue having the fast flash without a trailer attached, and is it flashing fast for the duration of that activation? Trying to figure out if I have this issue or not.

Hasn't mattered for mine. It has done it with and without a trailer. It will flash normal (or seem to) for the first second or so, then goes to a fast flash like the old school bulb being out. Sometimes it will be out all day, even after shutting down, and others it has come back the next time I use the signal, very random. It always shows "Check left front signal" on the dash when it occurs.

Edited October 9, 2023 by CRApex

eclipse41986 · October 19, 2023

Same issue on my 2023 LT. I've taken it to one dealership who "couldn't replicate the problem." Now, I'm taking it to another one for a second opinion. It doesn't happen all the time but when it does, it flashes normal and then does the fast flash like the old school trucks used to do when a bulb went out.

BowtieOwner · January 4, 2024

I haven't had the issue with the T/S's not working, but I have had my truck for about 5 weeks and I've noticed that the animated headlights don't work (at least not that I can tell). The lights just flash when I hit lock or unlock, just like any ol' regular light.

I've had other electrical issues too, my camera guidance lines have never worked and I have a blue hourglass in the top left corner when the cameras are on. I have taken the truck into the dealer twice for the camera issues, and they can't fix it even with GM tech help. They now have a camera module ordered to replace the one in the truck, hope that fixes the problem.

nhawkins48 · January 4, 2024

I gave up and just bought a new headlight. Anyone have install instructions they can send me?

UWSkier · January 8, 2024

On 1/4/2024 at 1:24 PM, BowtieOwner said:

I haven't had the issue with the T/S's not working, but I have had my truck for about 5 weeks and I've noticed that the animated headlights don't work (at least not that I can tell). The lights just flash when I hit lock or unlock, just like any ol' regular light.

I've had other electrical issues too, my camera guidance lines have never worked and I have a blue hourglass in the top left corner when the cameras are on. I have taken the truck into the dealer twice for the camera issues, and they can't fix it even with GM tech help. They now have a camera module ordered to replace the one in the truck, hope that fixes the problem.

Mine flash on lock or unlock also, but when turning, the animation works. I notice it when I'm behind another vehicle with a tailgate.

BowtieOwner · January 18, 2024

On 1/4/2024 at 3:24 PM, BowtieOwner said:

I haven't had the issue with the T/S's not working, but I have had my truck for about 5 weeks and I've noticed that the animated headlights don't work (at least not that I can tell). The lights just flash when I hit lock or unlock, just like any ol' regular light.

I've had other electrical issues too, my camera guidance lines have never worked and I have a blue hourglass in the top left corner when the cameras are on. I have taken the truck into the dealer twice for the camera issues, and they can't fix it even with GM tech help. They now have a camera module ordered to replace the one in the truck, hope that fixes the problem.

Well here we are almost 3 weeks after my last trip to the dealer to fix the camera issues, and I was just informed today that the camera module is back ordered. This issue, combined with the fact that my wireless Apple CarPlay won't connect the majority of the time I start the truck, is starting to make me question GM's commitment to quality. These SW issues should have never made it into the field.