2015 Chevy duramax

[Arturo V]

2015 Chevy duramax. Keeps flashing at me and making that ping noise. Service trailer brakes
Has Anyone ran into this? Little help green screen. No trailer hooked up- just driving down the road.

[LivinADream]

Mines been doing it for a couple of years, that and the tire sensors. Trailer brakes still work, censors have been gone for 7-8 years. Have never even looked into the fix, can't be much though I wouldn't think. Trailer brakes only flash when it's raining.

Sent from my moto z3 using Tapatalk

[CabezaBlanca]

I know a bad trailer brake controller will make it do that.

[muzzlebrake]

There might be a recall notice for that problem. Requires a re-flash of the ECM. Something to do with a software glitch. Any Dealer should do the re-calibration at no cost. https://www.cnbc.com/2019/09/11/gm-r...ke-issues.html

[Arturo V]

Ok thank you! I’ll look into this

[RWB]

It's a chevy....be happy a light is working. Just kidding but why do chevys always seem to have a headlight or running light out?

[randal]

I’ve got a 2015 1/2 ton that does the exact same thing.. it’s pretty intermittent.. I saw a video of someone saying they changed the switch out on the dash and it fixed it but didn’t work for me..

[Snowflake Killa]

It's a chevy....be happy a light is working. Just kidding but why do chevys always seem to have a headlight or running light out?

Because they use reconditioned ones out of a Ford

Sent from my Moto Z (2) using Tapatalk

[rvd]

I have some truck, never that issue but have had ecm issues intermittently. Let us know what you figure out

[Arturo V]

I did find 2 blown fuses. Replaced.
I’ll see what’s going on with it.

[ACCURACYINC]

I did find 2 blown fuses. Replaced.
I’ll see what’s going on with it.

I've experienced some issues like that when my brake fluid level has gotten low as well.

[Arturo V]

Fuses did not blow again, still good. Still throwing code.
I’ve seen to replace little switch directly behind brake controller. My next option. Will order on Amazon

[twistedmidnite]

check your factory trailer plugs in the rear, thats where my problem was coming from. Exact same symptoms as yours just on a dodge.

[Arturo V]

Will do, for now I just pulled both fuses out. The pinging noise has gone away. Will keep digging into it.

[Arturo V]

Update on this guys- replaced factory break controller. Found new one on amazon for roughly $40. Been 2-3 weeks. Perfectly fine. Pinging noise gone. No more blown fuses. Pulled multiple times since then.
2 plugs in back of it. Problem solved
Again I’m in 2015 Chevy duramax