My rear passenger speaker in my 07 Suburban LTZ has started making a whining noise. As I accelerate the pitch get higher and louder, as the car slows down it get less. It is not always there but comes and goes. Any idea what is going on.

 

I found another post that stated that the rear entertainment controls were the issue. If you bang on it the noise goes away. Sure enough it worked just like he said.

 

I too have the same problem and had it in my 2004 YukonXL Whining speaker from the rear of the truck. It's driving me crazy and shop says they haven't a clue. Any ideas? Help!!

 

yo yo man its da fuel pump making that noise you need a nosie filter...... why you even got speaker in dat, you know SUV's are soccer ball transporters