Help DIC Buttons and Horn not working
Thread Starter
Advanced
Joined: Jun 2010
Posts: 60
Likes: 0
From: Miami FL
Help DIC Buttons and Horn not working
Hi everyone, I have two issues that seemed to occur at the same time not sure if they are related. I have a C6 Steering wheel in my C5 which I did about 5 month ago, I did all the wiring and I got the horn working flawlessly no issues at all. So I don't have a membrane issue This past weekend the horns just stop working along with DIC buttons.
The wiring to the steering wheel is at 12v, the ground under the steering wheel is fine as well. So I know its not a voltage issue. The horn sounds when I use the FOB, so I assume there is no issue with the horn, the fuse or the relay.
The DIC buttons don't work when I press them. I took out the IPC and check the connections for corrosion and even put dielectric grease to see if that helped. I'm thinking that it is the switch.
I am completely stumped if anyone can help or give me any other ideas. I was thinking that maybe my BCM is malfunctioning as both the Horn Wiring and the IPC goes into it but my IPC still displays my seat belt light and all gauges still work properly.
The wiring to the steering wheel is at 12v, the ground under the steering wheel is fine as well. So I know its not a voltage issue. The horn sounds when I use the FOB, so I assume there is no issue with the horn, the fuse or the relay.
The DIC buttons don't work when I press them. I took out the IPC and check the connections for corrosion and even put dielectric grease to see if that helped. I'm thinking that it is the switch.
I am completely stumped if anyone can help or give me any other ideas. I was thinking that maybe my BCM is malfunctioning as both the Horn Wiring and the IPC goes into it but my IPC still displays my seat belt light and all gauges still work properly.
Tech Contributor
Joined: Jan 2007
Posts: 19,493
Likes: 1,178
From: Dyer, IN
Hi everyone, I have two issues that seemed to occur at the same time not sure if they are related. I have a C6 Steering wheel in my C5 which I did about 5 month ago, I did all the wiring and I got the horn working flawlessly no issues at all. So I don't have a membrane issue This past weekend the horns just stop working along with DIC buttons.
The wiring to the steering wheel is at 12v, the ground under the steering wheel is fine as well. So I know its not a voltage issue. The horn sounds when I use the FOB, so I assume there is no issue with the horn, the fuse or the relay.
The DIC buttons don't work when I press them. I took out the IPC and check the connections for corrosion and even put dielectric grease to see if that helped. I'm thinking that it is the switch.
I am completely stumped if anyone can help or give me any other ideas. I was thinking that maybe my BCM is malfunctioning as both the Horn Wiring and the IPC goes into it but my IPC still displays my seat belt light and all gauges still work properly.
The wiring to the steering wheel is at 12v, the ground under the steering wheel is fine as well. So I know its not a voltage issue. The horn sounds when I use the FOB, so I assume there is no issue with the horn, the fuse or the relay.
The DIC buttons don't work when I press them. I took out the IPC and check the connections for corrosion and even put dielectric grease to see if that helped. I'm thinking that it is the switch.
I am completely stumped if anyone can help or give me any other ideas. I was thinking that maybe my BCM is malfunctioning as both the Horn Wiring and the IPC goes into it but my IPC still displays my seat belt light and all gauges still work properly.
I'm not sure what you used dielectric grease on, but since that is an insulator(not a conductor), it can only make you issues worse.
Tech Contributor
Joined: Jan 2007
Posts: 19,493
Likes: 1,178
From: Dyer, IN
Thread Starter
Advanced
Joined: Jun 2010
Posts: 60
Likes: 0
From: Miami FL
I just finished buying a used switch on ebay as GM does not make them anymore hopefully that will fix the switch issue, unless that one is mess up too 
.
I will check the ground again, is it possible that the relay can work with the FOB and make the horn sound but malfunction and not work with the horn from the steering wheel?
.I will check the ground again, is it possible that the relay can work with the FOB and make the horn sound but malfunction and not work with the horn from the steering wheel?
Tech Contributor
Joined: Jan 2007
Posts: 19,493
Likes: 1,178
From: Dyer, IN
I just finished buying a used switch on ebay as GM does not make them anymore hopefully that will fix the switch issue, unless that one is mess up too .
I will check the ground again, is it possible that the relay can work with the FOB and make the horn sound but malfunction and not work with the horn from the steering wheel?
.I will check the ground again, is it possible that the relay can work with the FOB and make the horn sound but malfunction and not work with the horn from the steering wheel?
Thread Starter
Advanced
Joined: Jun 2010
Posts: 60
Likes: 0
From: Miami FL
Thanks Lucky, it was ground but what still has me stumped is why from one day to another the ground just decided to stop working, but hey the horn works fine again so thats all that matters, just awaiting the switch for DIC hopefully that works out fine too thank again for your help 
