keyless entry and horn on 2005 Chevrolet Malibu Maxx

I change my battery and the horn will not work, nor the keyless entry. The horn was working at first with the security system, but when I changed the battery non of this work. The electronic door lock work with the key or manually using the door lock,

Asked by for the 2005 Chevrolet Malibu Maxx
it seems when you change the battery it reset the security system you may need to get this reprogram
1 answer