Get the Bilstein 5100’s. They are adjustable and ride great. The RC kit will work on the Z71 however they require cutting the shock mounts which will require replacement in the future
Could lift the rear an inch or so with a shock tower spacer but you'll be left with a weird rake angle when unloaded. How about this, Bilstein 5100's which will greatly increase damping and add in that adjustable sway bar you can find somewhere in these forms. Between the two you could reduce...
Is the sound coming through the speakers, bad grounds and EMI can cause faint noises.
You said HVAC was of but was the AC compressor selected off?
Could be a restriction in the AC lines or coolant moving through the heater core.
There are little microphones you can tape to various places...
I’m no expert on these trucks but I imagine you couldn’t hear the fuel pump unless it’s about to fail. If I’m not mistaken the fuel pump primes each time the keys near the vehicle. Does it make strange noises you can hear from outside the vehicle? Does the swooshing increase with RPM?
Check...
They are great, wish I had installed them the day one. They are heavily damped which is how they get the rough reputation but I think these big body trucks need all the damping they can get. That’s part of the reason I got 18” wheels when I went to 5100’s, to smooth out the sharp bumps.
My...
We were behind a wall obstructing visual contact with running aircraft masking whatever noise they made. It was a tow behind deckover style trailers so no markings apparent and some badass winch.
It would have taken less than a smoke brake to witness but damn if they didn’t pull it off. Also -...
I believe there’s a wiring mod that relocates the horn’s wiring harness somewhere less accessible from the grill.
I do like @PPV_2018 idea of blasting them with a second horn. Maybe wire up a circuit which will activate a second horn if the wiring harness is cut.
A buddies Centennial Edition...
The diff fluid changes are not covered however if after the third fluid change the noise remains they will cover the parts change if you remain within warranty.
@coachhomer Id change out that diff fluid before diving into a front end rebuild. Two quarts of gear oil and easy access to the drain...
If you are going from the Rough Country 2" spacer kit to Bilstein you'll need a new set of strut mounts since the shock bolts get cut during the RC install.
KYB SM5896 (2)
KYB SM5974 (2)
Its not going to be a super smooth seamless experience but it definitely serves a purpose. I use the android operating system of mine to run Stremio + Debrid. Basically puts an android tablet on your screen.
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