Cruise control and horn will not work

[Ptwarr]

Driving a 2010 Sierra, cruise control light stopped coming on today and can't figure out what the problem is, all brake lights and tail lights work fine. Anybody have any ideas? And also my horn will not work when I push the horn in but will sound when I lock my truck. I checked the fuse and it is fine. Any ideas will be appreciated.

[j-ten-ner]

As for the cruise control, the (common for GMT900) problem could be the break light switch.

20 bucks at the dealer ship, 5 min to switch it out.

 

No idea about the horn.

 

so long

j-ten-ner

[BigBadSierra]

You may have an issues with the wires that come up the column.

 

I had one wear out once in an older car. I could see it when I took the column apart.

 

I was going to fix it but then found out it was cheap so I just bought a whole new one.

 

Worth checking if you can't find anything else wrong.

[GMCustomerService]

Hello Ptwarr,

 

I’m sorry to hear you that your Sierra is experiencing this cruise control malfunction. If you’re considering visiting your dealership, I’d be happy to reach out to them on your behalf and provide an additional layer of assistance. In order to proceed, please provide us with your full contact information, VIN, mileage and dealership. I’m looking forward to hearing from you.

 

Best regards,

 

Anthony J.

GM Customer Care

[ChevyRoofer]

Driving a 2010 Sierra, cruise control light stopped coming on today and can't figure out what the problem is, all brake lights and tail lights work fine. Anybody have any ideas? And also my horn will not work when I push the horn in but will sound when I lock my truck. I checked the fuse and it is fine. Any ideas will be appreciated.

 

http://www.gm-trucks.com/forums/topic/151103-cruise-control-stopped-working/

 

Look in the GMT-900 trucks section, better results.