Jump to content

Front End "pop" When Cold Outside

tombstone

Recommended Posts

tombstone Enthusiast

tombstone

Posted
Posted

Good Evening!

 

Last year I posted about a noise I heard and could feel from the driver's side floor board. I took it to the dealer who found nothing (of course) and had the guys at Monro look at it during the inspection - they also found nothing.

 

Well it warmed up, the noise stopped and I forgot about it ... until now.

 

The sound has returned and seems to occur when I go over a pretty decent bump, the front of the truck dips when driving over an inlet , or I go up an incline and a turn at the same time. When it's warm the problem doesn't manifest. As it's been getting colder the noise returns.

 

Does anybody have any ideas as to what it could be?

 

Thanks guys!

 

Jeff

tombstone Enthusiast

tombstone

Posted
  • Author
Posted
Do you have nerf bars?

 

I do not have nerf bars. I found a TSB on a noise coming from that area that GM attributes to the #1 body mount. I told my dealer about it but of course when they test drove it they "heard nothing" like always.

 

Jeff

VMax2007 Senior Enthusiast

VMax2007

Posted
Posted

Myself and Scott (AlaskaLTZ) have been chasing a cold-weather "mystery clunk" for the past year and have yet to figure it out. Mine is coming from the passenger side though, and seems as though it's coming more from up front. My dealer even put mics on the struts to see if it was suspension related, and it wasn't. I don't think it's my cab mounts. It has me completely baffled.

502chevy Enthusiast

502chevy

Posted
Posted

is this happening when turning? i have an 08 and when i pull out of a parking space after work at night, i get off at 10pm and around here it is about 40 at 10pm now, i get a pop like you get when turning the steering wheel sharp when in 4 wheel drive. do you all think this could be something with the front axel or cv joint?

sno Enthusiast

sno

Posted
Posted
Myself and Scott (AlaskaLTZ) have been chasing a cold-weather "mystery clunk" for the past year and have yet to figure it out. Mine is coming from the passenger side though, and seems as though it's coming more from up front. My dealer even put mics on the struts to see if it was suspension related, and it wasn't. I don't think it's my cab mounts. It has me completely baffled.

 

This sounds like the one I had right after buying my truck in October '07. It turned cold and I started hearing a "clunk" from what I would have sworn was the right-front suspension... mostly during 'compression'.

 

After 8 days, the dealership isolated the problem as being the radiator mounts. They "couldn't remember" what they actually did to the mount to eliminate the noise, but he did say they had encountered a similar problem on previous models and used 'zip ties' to cinch the radiator down on them.

VMax2007 Senior Enthusiast

VMax2007

Posted
Posted
Myself and Scott (AlaskaLTZ) have been chasing a cold-weather "mystery clunk" for the past year and have yet to figure it out. Mine is coming from the passenger side though, and seems as though it's coming more from up front. My dealer even put mics on the struts to see if it was suspension related, and it wasn't. I don't think it's my cab mounts. It has me completely baffled.

 

This sounds like the one I had right after buying my truck in October '07. It turned cold and I started hearing a "clunk" from what I would have sworn was the right-front suspension... mostly during 'compression'.

 

After 8 days, the dealership isolated the problem as being the radiator mounts. They "couldn't remember" what they actually did to the mount to eliminate the noise, but he did say they had encountered a similar problem on previous models and used 'zip ties' to cinch the radiator down on them.

 

 

I remember you mentioning this and I did my best to check this out last year and that damned radiator does not budge when I try to move it. It does sound like that could be it though. I will definitely check into this again.

 

Thanks!

mipsco1 Enthusiast

mipsco1

Posted
Posted

just a something for vmax. my buddy explained a prob he was having with his truck to me. it sounds a lot like yours. we finally found that it was th ac comp kicking in when the defrost is on. dont know if thats yours or im way off base.

Bluedog Enthusiast

Bluedog

Posted
Posted

My 08 is at the dealer for this problem. The mechanic told me that he has had a couple of others and claims that the fender liner flexes and "pops" against the frame. He showed me where it rubs on the frame, which had a visible bright spot, and where it hits when it pops at another location. He says he heats them up with a heat gun and "reshapes" them a bit so they don't rub on the frame anymore and that keeps them from binding and popping.

 

He had me sit in the truck while he popped one by hand, and it does sound (and feel) like the noise I am experiencing.

 

We'll see, but he says the ones he's fixed that way have never come back again for that problem...stay tuned!

VMax2007 Senior Enthusiast

VMax2007

Posted
Posted
My 08 is at the dealer for this problem. The mechanic told me that he has had a couple of others and claims that the fender liner flexes and "pops" against the frame. He showed me where it rubs on the frame, which had a visible bright spot, and where it hits when it pops at another location. He says he heats them up with a heat gun and "reshapes" them a bit so they don't rub on the frame anymore and that keeps them from binding and popping.

 

He had me sit in the truck while he popped one by hand, and it does sound (and feel) like the noise I am experiencing.

 

We'll see, but he says the ones he's fixed that way have never come back again for that problem...stay tuned!

 

Any chance you could get a few pics?

Bluedog Enthusiast

Bluedog

Posted
Posted

If he gets it fixed I'll post some pics.

 

The place where the liner was rubbing on the frame was pretty obvious when he pointed it out. The wax coating was gone, and the frame rail was shiny. The spot was located behind the a-arm about 6".

VMax2007 Senior Enthusiast

VMax2007

Posted
Posted
If he gets it fixed I'll post some pics.

 

The place where the liner was rubbing on the frame was pretty obvious when he pointed it out. The wax coating was gone, and the frame rail was shiny. The spot was located behind the a-arm about 6".

 

Cool, I'll check it out tomorrow. I don't see how this could be cold weather dependant. But I'll try anything at this point. Thanks!

Bluedog Enthusiast

Bluedog

Posted
Posted

I think it has to do with the plastic being less flexible when its cold and binding more before it "pops" Like I say we'll see if he can fix it. Supposed to be 75 degrees here in Denver tomorrow, but 40 on Thursday so that might be the test...

Archived

This topic is now archived and is closed to further replies.

Go to topic listing

  • Recently Browsing   0 members

    • No registered users viewing this page.

  • Forum Statistics

    250.3k
    Total Topics
    2.7m
    Total Posts

  • Member Statistics

    342,732
    Total Members
    8,960
    Most Online
    user087
    Newest Member
    user087
    Joined

  • Who's Online   3 Members, 1 Anonymous, 851 Guests (See full list)

  • Latest Articles

  • Posts

    • bruceb58
      Road Master Active Suspension

      By bruceb58 · Posted

      This doesn't look like a GM truck. Not needed on a HD truck
    • CamGTP
      Gas Prices

      By CamGTP · Posted

      It varies a ton around me. Some places are still at $5.00 or higher and others are way down into the $4's.   Offroad diesel was $4.02 at the one station I passed today.
    • Hdwrguy
      2027 Chevrolet Silverado: Official Discussion

      By Hdwrguy · Posted

      So after reading the reveal from Chevrolet, I kept asking myself...why did the trim levels change?   Here are the official ones:   Work Truck (WT): The quintessential fleet truck, built with durable, easy-to-clean interiors for commercial or utilitarian use. Custom: A stylish, road-oriented trim that adds a more refined appearance, standard dual exhaust, and modern exterior styling. Custom Trail Boss: An entry-level off-roader featuring a 2-inch factory suspension lift and 34-inch mud-terrain tires on a budget. Silverado: Serving as the new base consumer truck (replacing the previous LT trim), it comes standard with the Z71 off-road package when equipped with 4WD. Trail Boss: Steps up the off-road hardware with the 2-inch lift, 34-inch tires, monotube shocks, an exclusive off-road hood, and more premium interior options. ZR2: The flagship off-roader. It boasts 35-inch mud-terrain tires, Multimatic DSSV dampers, front and rear electronic lockers, forged carbon-fiber interior accents, and an available hardcore Bison Edition (co-developed with AEV). High Country: The pinnacle of luxury. It replaces bright chrome with modern satin chrome, 22-inch wheels, premium leather, real wood interior trim, a panoramic sunroof, and an exclusive front-passenger touchscreen. As others have stated, why would you want a Silverado - 'Silverado' - wth?? LT needs to remain!!!   Also, there will no longer be a dedicated Z71 model.  All 4x4 trucks will have the Z71 package. Carplay is also something that cannot be removed.  Hopefully it will remain.     I am excited about the 5.7L V8 (350 C.I.D.)  Old school Chevy power.  My only concern is whatever version of AFM/DFM cylinder deactivation.  Too bad that isn't an option a buyer can choose to have or not.   I will definitely be stopping by my local dealership when these trucks start showing up.
    • richard wysong
      Gas Prices

      By richard wysong · Posted

      I haven't seen diesel for less than $5.30 anywhere in my area
    • Chuck FB
      OCI, not when but why?

      By Chuck FB · Posted

      The not as clean as one would assume theme with the new engine oil, that reminds me of comments over the years with mechanics not always being so on board with filling an oil filter, not from the center anyway due to that typically being the clean side of the filter, danger of some contaminant falling into the filter if not careful but the realization now that the oil may not be as pure as one had assumed it would surely be. Yes it would be possible to fill from the small holes but that means messing with something to prop open the anti drain back valve if the filter is so equipped and not damage that valve in the process. Me, I have hardly ever prefilled an engine oil filter however I have prefilled diesel fuel filters with a filter on a fuel bulk tank and for anyone that has messed with diesel engines with filters and units that have a limited or no way of priming them, putting on a dry filter is a bad day to say the least with those crappy systems. But anyway back to not so clean engine oil, indeed perhaps its not so bad after all that I have not made a practice of prefilling oil filters.    As Grumpy Bear commented on keeping things clean, that I really have to wonder what the typical practice is at a dealer or any other shop that changes engine oil, do they make sure to wipe or wash off the oil plug and certainly if it fell into some gunk or onto a dirty floor, or that they wiped the filter mounting flange and didn't go and use some dirty rag and end up adding dirt to the inside of the head of the filter mount. Or be careless in how they stored or handled the new filter and if they were bumping into items under the vehicle with the filter opening facing up and having dirt drop right into the filter and if so right into the threaded center that is on the clean side. The top side, did they clean away the built up gunk that may be around the filler before removing the cap or to be really careful at that point that something right close to the filler hole that was hidden under the caps flange won't fall into the engine. Or did they clean the funnel or was that just laying there covered in oil from the oil change before and dust kicked up from sweeping the floor stuck to the oil and now that will go running into the next persons engine due to just not cleaning the funnel as "they won't know anyway" attitude as that young guy is more worried about taking a break so he can go outside and smoke a joint. Just random points that came to mind when I think about what some hired personnel may do that the shop foreman has no idea of or perhaps the whole attitude of some shops may be "eh ... who cares, they will never know the difference anyway".  

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...