Weird Noise From Suspension

[rwiegand]

2017 Yukon Denali with Magnetic Ride. The driver's front suspension is making a noise that sounds like an owl hooting or a pigeon cooing. The noise stops when it is really cold outside. The dealer said it is coming from the bumpstop / jounce stop, but they want $1,100 to replace both front bump stops and won't guarantee that will stop the noise. The noise occurs with even the slightest movement of the suspension. Does anyone have any idea if the bumpstop could be causing such a sound, or any other ideas what it may be? Thanks.

 

[Joseph Garcia]

Welcome to the Forum from NH.

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Pics of the truck, please.

I'm not sure how the bump stops could be causing this issue, and the quote to replace is through the roof. I'd be checking the bushings on the sway bars (first choice guess) and on the control arms, to see if there is any visible deterioration.

 

[rwiegand]

I replaced both front struts and bump stops, and the noise stopped. I don't know which replacement fixed the noise - I'm just happy it stopped. Almost all of the $1,100 quote for replacing the bump stops was labor, and if I later had to replace the struts I'd be paying that labor again. So I just replaced both at the same time. Parts and labor for the struts and bump stops ended up being $1,700. I bought the OEM struts from Rock Auto for less than half the price the dealership would charge, but the dealer installed them.