Hi,welcome to Just Answer.I will be happy to assist you with this question today.I will try and assist you as best as possible from here,feel free to ask any follow up questions to my info provided here.
Your vehicle has two horns,one behind the front grille on the vehicle and the other behind the drivers side inner front fender well lining.
You should be able to access the horn behind the grille by unbolting one bolt that holds it in place and then replacing it.
To access the second horn the inner wheel well lining on the drivers front side needs removed.Once removed then you can access and replace this horn.
Should I change both?. Which part number should I buy
I apologize but I didnt get your last reply can you repost it?
If you have someone push on the horn listen and see which horn isnt sounding or which is sounding differently then it should then replace that horn.
The part numbers I have is a(NNN) NNN-NNNNfor the deep tone horn and a(NNN) NNN-NNNNfor the high note horn.It all depends on which needs replaced.
Let me know if you need anything else with this question asked here.Thanks Pete!
Can I ask you one more question?