Buzzing sound, new solenoid pack?

[battleborn]

So I replaced the solenoid pack in my 2005 V6 and now there is a buzzing noise when the car is in reverse. Ugh. Any idea what this might be?

 

[fudge12]

So I replaced the solenoid pack in my 2005 V6 and now there is a buzzing noise when the car is in reverse. Ugh. Any idea what this might be?

does the buzzing get louder as you press the accelerator in reverse?

either something was missed during the reassembly process or the solenoid is bad.

first time i read this issue on here. can you post a video of the problem? "Buzzing" is quite vague.