door lock problems

[Elcaminoguy]

just purchased 2000 chevy Tahoe Z71. looks great but having electrical issues. when ever i open any door the horn sounds. can't figured out why. pulled fuse till get some clues... all door locks work fine??

found out this tahoe does not have a bcm......traced problem to fob receiver module which is obsolete. buy used one to test and prove problem is fixed...

 

[Miami-Dade]

@Elcaminoguy Moved you here from intro section.
Welcome from Miami Beach!

 

[S33k3r]

Most likely you have a bad wire that is shorting to the horn. Whenever you open a door, power is also applied to the horn circuit, causing it to go off. I'm guessing you might have had an aftermarket alarm on there.

 

[Fless]

Welcome from the Peoples' Republic of Colorado!

 

[Hoesgottaeat2]

Welcome from NY.
What @S33k3r alluded to above...possible remnants of an aftermarket alarm system from a previous owner.

 

[Joseph Garcia]

Welcome to the Forum from NH.

Lots of knowledgeable folks here who freely share their knowledge, experiences, and perspectives. Knowledge is power.

I hope that you will become a participating member in the Forum's discussions.

Pics of the truck, please.

You are already receiving sage advice from the knowledgeable folks on this Forum.

 

[Elcaminoguy]

Most likely you have a bad wire that is shorting to the horn. Whenever you open a door, power is also applied to the horn circuit, causing it to go off. I'm guessing you might have had an aftermarket alarm on there.

horn is ok now that i removed fab reciever