Jump to content

Suspension Noise in Front End in Cool/Cold Weather (≤50°F)

03msc

By 03msc
in Troubleshooting & Recalls

 Share

Recommended Posts

03msc Enthusiast

03msc

Posted
Posted

So on my '15 Crew Z71, I've notice the last few years that when the weather is cool or cold and I first get in and begin to drive somewhere, anytime I hit a bump or speed bump (like on our work campus), the front in makes a crunchy/farting noise (yes, I said farting... for lack of a better term).  Sounds to me like rubber against metal.  I assume the rubber contracts when cold and causes this noise.  If above 50° or so outdoor temp it doesn't do it.  And the colder it is, the more pronounced the noise.  Any ideas as to what it is?  Shocks?  Some other joint in the suspension?  Seems to be getting a little worse over time so I'd like to remedy it if I can.  About 96k miles on the truck.  I'm hoping it's something simple.  Thoughts?  Experienced it?  

m3n00b Enthusiast

m3n00b

Posted
Posted
35 minutes ago, 03msc said:

So on my '15 Crew Z71, I've notice the last few years that when the weather is cool or cold and I first get in and begin to drive somewhere, anytime I hit a bump or speed bump (like on our work campus), the front in makes a crunchy/farting noise (yes, I said farting... for lack of a better term).  Sounds to me like rubber against metal.  I assume the rubber contracts when cold and causes this noise.  If above 50° or so outdoor temp it doesn't do it.  And the colder it is, the more pronounced the noise.  Any ideas as to what it is?  Shocks?  Some other joint in the suspension?  Seems to be getting a little worse over time so I'd like to remedy it if I can.  About 96k miles on the truck.  I'm hoping it's something simple.  Thoughts?  Experienced it?  

Mine has done this since I put on my suspension at 20k miles.  Still does it at 50k

  • Sad 1
03msc Enthusiast

03msc

Posted
  • Author
Posted
26 minutes ago, m3n00b said:

Mine has done this since I put on my suspension at 20k miles.  Still does it at 50k


I’m just hoping to track down the cause/solution. 

ftwhite Enthusiast

ftwhite

Posted
Posted

Original Rancho factory shocks? My 18 doesn’t have similar behavior (factory shocks long gone), but I do get more suspension travel squeaks in cold/freezing temperatures. Maybe CV axle boot? 

  • Like 1
UrbanRage Enthusiast

UrbanRage

Posted
Posted

Most likely, control arm and/or sway bar arm bushings. My 2017's bushings show signs of wear, and they do the same thing. To stop it or at least minimize it, you could try spraying them with some white lithium grease.   

  • Like 1
03msc Enthusiast

03msc

Posted
  • Author
Posted

@ftwhite Yes, original shocks. I did have a 2" (or 2.5"?) level kit installed a year or two after I bought the truck new (one of those round ones that gets put on top of the spring or whatever).  

 

I mean, I'm considering just buying some new front shocks anyway but thought I'd ask in case it's something different.  If I do, it'll be a kit to keep it level without the add-on piece.  

 

@UrbanRage Thanks, I'll look into this; that could be it.  Very plausible since it's a cool/cold weather thing.  

  • 1 year later...
anonymouse Enthusiast

anonymouse

Posted
Posted

Did you figure this out? I have a similar issue on my 14 high country. Also, if you changed your shocks, what difference did it make to your ride and what shocks did you use? 

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing

  • Latest Articles

  • Posts

    • newdude
      Gasser Subforum Has Been Quiet - - So, Regenerative Braking and Using L10

      By newdude · Posted

      No such thing as regenerative braking on a pure ICE vehicle.     Regenerative braking is the re-capture of energy from electric motors and stores it in the battery pack.  So hybrids, PHEV and EVs have regenerative braking.     What you are seeing is the charging system changing modes is all.  Its likely entering charge mode for some sort of reason is all.  All of the charging modes will be listed below.   As for L10 vs D.  L10 turns off automatic grade braking.  L10 puts you in control of grade downshifts where in D it will automatically do it based on brake pedal position and other factors.  Otherwise L10 and D drive exactly the same aside from that one aspect.    Battery Sulfation Mode The BCM will enter this mode when the interpreted Generator output voltage is less than 13.2 V for 45 minutes. When this condition exists the BCM will enter Charge Mode for 2–3 minutes. The BCM will then determine which mode to enter depending on voltage requirements.   Charge Mode The BCM will enter Charge Mode when ever one of the following conditions are met:   Windshield wipers are ON for more than 3 s. Climate Control Voltage Boost Mode Request is true, as sensed by the HVAC control module via serial data. High speed cooling fan, rear defogger, and HVAC high speed blower operation can cause the BCM to enter the Charge Mode. The estimated battery temperature is less than 0°C (32°F). Battery State of Charge is less than 80%. Vehicle speed is greater than 145 km/h (90 mph) A current sensor malfunction exists. System voltage is determined to be below 12.56 V When any one of these conditions is met, the system will set targeted generator output voltage to a charging voltage between 13.9–15.5 V, depending on the battery state of charge and estimated battery temperature.   Fuel Economy Mode The BCM will enter Fuel Economy Mode when the estimated battery temperature is at least 0°C (32°F) but less than or equal to 80°C (176°F), the calculated battery current is less than 15 A and greater than −8 A, and the battery state-of-charge is greater than or equal to 80%. Its targeted generator output voltage is the open circuit voltage of the battery and can be between 12.5–13.1 V. When fuel economy mode is active, the generator is not charging, only maintaining open circuit battery voltage. The BCM will exit this mode and enter Charge Mode when any of the conditions described above are present.   Headlamp Mode The BCM will enter Headlamp Mode when ever the head lamps are ON (high or low beams). Voltage will be regulated between 13.9–14.5 V.   Start Up Mode When the engine is started the BCM sets a targeted generator output voltage of 14.5 V for 30 s.   Tow/Haul Mode (if applicable) Pressing the Tow/Haul Mode button located on the center stack, the vehicle system voltage is raised and the remote (non-vehicle) battery will be charged. Having the headlamps on will raise the system voltage and if the Tow/Haul button is applied it will not serve any purpose. The voltage is regulated between 13.9-14.5 V.      
    • jaszr2
      Active Grille Delete

      By jaszr2 · Posted

      Hello from Australia Just sharing that there is now a way to delete the active shutters entirely with just a plug in module. Opens up tons of room to light bars etc.
    • jake111
      Gasser Subforum Has Been Quiet - - So, Regenerative Braking and Using L10

      By jake111 · Posted

      I have an observation and a question... 1) I watch the voltage closely because I have had to dial in the cut-in/cut-out voltages of the battery separator to my camper.  The "smart" charging drives me nuts.  Anyway, I noticed that when coasting for a while, and especially if lightly using the brakes (though not necessary), the voltage goes up from mid/high-13 volts to mid/high-14 volts.  Then it drops back down after stopping or going again.  Consistently!   The only explanation I can come up with is REGENERATIVE BRAKING!  Well, maybe that's a little bit of an exaggeration, but it's certainly free extra battery charging.   2) Driving on mountain roads I will use L and vary the max gear.  Things straighten out and I end up in L10.  Sometimes I leave it there for a while.  Is there any difference between L10 and D?   
    • devonthegreat
      anyone interested in a 2002 Chevy Silverado 4x4 parts truck NYC

      By devonthegreat · Posted

      **SOLD** Please end or delete post. thank you
    • PBNB
      Tire pressure for 37s

      By PBNB · Posted

      Do you think this width might affect the chalk test with a higher pressure closer to 65psi? I think lowering the pressure makes sense to get the tread to lay flatter

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...