I Need Help fast

I recently bought a used 2000 gmc sierra, everything is running and working
properly...well almost everything. This morning I woke up to the sound of
my horn blaring, it was going off for no apparent reason. It has does this
once before and I have no idea why. It always happens very early in the
morning and when it is pretty cold outside, if anybody knows ANYTHING
about why it's doing this please fill me in asap. also the car has a few
custom things done to it i'm just wondering if that has anything to do
with it

Maybe your remote car starter is set to start the truck when it gets below a
certain temperature and it was hooked up wrong so rather than starting the
truck it blows the horn.

Steve

"michaelyackson" <lvbballer2@yahoo.com> wrote in message
news:a970d929db62c45aaeb366b15e3a4b8e@localhost.ta lkaboutautos.com...
>I recently bought a used 2000 gmc sierra, everything is running and working
> properly...well almost everything. This morning I woke up to the sound of
> my horn blaring, it was going off for no apparent reason. It has does this
> once before and I have no idea why. It always happens very early in the
> morning and when it is pretty cold outside, if anybody knows ANYTHING
> about why it's doing this please fill me in asap. also the car has a few
> custom things done to it i'm just wondering if that has anything to do
> with it
>

Could you have an alarm that you don't know about. Motion sensor alarm
? The morning paper boy could be playing tricks. Just a thought
On Wed, 09 Feb 2005 0908 -0500, "michaelyackson"
<lvbballer2@yahoo.com> wrote:

>I recently bought a used 2000 gmc sierra, everything is running and working
>properly...well almost everything. This morning I woke up to the sound of
>my horn blaring, it was going off for no apparent reason. It has does this
>once before and I have no idea why. It always happens very early in the
>morning and when it is pretty cold outside, if anybody knows ANYTHING
>about why it's doing this please fill me in asap. also the car has a few
>custom things done to it i'm just wondering if that has anything to do
>with it

Could be the door light switch. If it is sticking, it can fool the
computer into thinking that there is a breech in the security system.

Something basic to check out. My 2000 Cavalier was doing the exact
same thing.


Haven"t figured out how to post to the newsgroup yet, sorry about the
email.

Mike





On Wed, 09 Feb 2005 0908 -0500, "michaelyackson"
<lvbballer2@yahoo.com> wrote:

>I recently bought a used 2000 gmc sierra, everything is running and working
>properly...well almost everything. This morning I woke up to the sound of
>my horn blaring, it was going off for no apparent reason. It has does this
>once before and I have no idea why. It always happens very early in the
>morning and when it is pretty cold outside, if anybody knows ANYTHING
>about why it's doing this please fill me in asap. also the car has a few
>custom things done to it i'm just wondering if that has anything to do
>with it

I don't have a remote start, but i'm getting one this saturday.

No i'm pretty sure I don't have an alarm, there's no paperboy anyway. I
have NO clue why it's doing this.

I don't have a security system on my truck yet, get one friday. But i'll
check if the switch because my inside lights don't even turn on when i
open my doors.