JamGear

Picked up my truck last night. The noise came from a failed driver side rear differential carrier bearing. I wonder why it failed? Is this a wearable part? I tow a 5th wheel RV. I wonder if towing heavy can produce stress and wear? Or, I truly had a defective bearing from day one? As I read up on this particular repair, most techs advised it was a good idea to replace the pinion and passenger side carrier bearings since they are only $40 a each and would not have required much more labor. I would have certainly paid a couple hundred more to have them replace all the bearings. Apparently bad bearings can produce metal shavings that could remain in the fluid or in the other bearings. Nevertheless, I am very pleased to have this issue resolved. Boy what a difference.

My truck has been at the dealer for a week. Though they still do not know what is wrong, they have isolated it to the rear end. Tomorrow they are taking the rear apart to find the failed component producing the sound. Hopefully I will have an answer this week.

As it is with many of the mysterious noises, wobbles, hippy-hippy shakes, hiccups and burps any given Silverado can make, the first challenge to troubleshoot is finding the best words to describe the sound. My old 2015 1500 had the steering shake. My current 2018 2500HD was fine for 2 years and 19,000 miles when 2 weeks ago it presented an incredibly disturbing new noise. I searched and searched for whirring, pulsing, rotational noise, whining, knocking, hammering to no avail. Until I found a thread on this forum that used the words “woob woob”. As soon as I saw those words I thought, “that’s the sound my truck is making.” Starting at 30 miles per hour, peaking at around 45mph, disappearing between 55 and 65 then reappearing at 65 to 70, my truck exhibits a pulsing, rotational, acceleration dependent, transmission engaged, woob woob sound that at times becomes almost a knocking or hammering. I do not think it has anything to do with the wheels. Comes and goes with the accelerator and, at times, when engine braking kicks in. As a test I produced the sound going down a hill steep enough to maintain speed as I put the trans in neutral. Like a light switch, the sound completely disappeared. So it’s likely something in and around the transmission. I brought it in to my dealer. When he called yesterday I readied myself to hear the horrible news “sorry sir we were not able to reproduce the problem”. But as the sweat began to come out my pores, the service tech advised that they did in fact hear the sound, they consider it a problem and need a few more days for their transmission tech to figure out what's wrong. WHEW! Happy I got past the first goalie. I figured I would post this and report back as things progress, hopefully to a complete solution. I love my Silverado. But when it comes to mysterious noises on our beloved GM trucks, the road to remedy can be like convincing someone you saw a UFO.

I have an 8’ bed with a Chevy OEM Bowtie tri fold hard cover. It’s great. Not a drop of water in the bed. We have had rain here in north Jersey for months. Though it weighs almost 70lbs, it mounts and dismounts with ease. Very well designed and very solid but light.

I did some searching on the internet for words like "GM warranty sprayed bed liner" and stumbled across a site that looked like it is associated with GM but definitely not a GM property. There was a section to contact regarding a warranty claim. So I plugged in my info. Then I called the number and left a message but got disconnected. So I thought yet another dead end with my quest to find the actual warranty terms and remedy for the sprayed bed liner. Later that day around dinner time I get a call from some number in Texas. With all the robo calls these days I almost did not answer. Then I quickly realized this call was from the site I found. After asking me a few questions about my liner issue and to confirm it was factory installed, Yvonne said she would send me some cleaner / conditioner free of charge that should remove the spots and help prevent new ones. If this did not work to call her back. A few days later I received a spray bottle of conditioner. I will try it this weekend and report back. I believe that Ultimate Linings are the company that OEMs the spay on bed lining solution for GM for my 2018 Silverado. So it would seem there is a place to go for issues with the GM factory bed liner. Still frustrates me that my dealership knew nothing of this. Thank God for the internet and Ultimate Linings standing behind their product. www.ultimatelinings.com

I have a 2018 2500HD long bed with a factory installed spray bed liner. Though the company that installed the after-market under bed rails for my 5th wheel hitch did a great job, there are some metal flakes from drilling into the bed floor that got embedded in the liner and are now rusting. or the flakes were sitting in water and stained the liner material. No big deal really. Just looks bad to me. Does anyone know if merely spraying over the affected area with an off-the-shelf bed liner spray would be OK to cover the spots? Is there an actual GM part for a bed liner touch up spray? I know there are GM repair kits. But I do not have a chip or scratch, just some discoloration from the rusted flakes..

Please let us know how it goes. I have been working on this denting issue for 2 years now. I have a GM case# if the dealer does not help you. Either way, I would help my cause if you could report back to us here what the dealer did or did not do for you. Thanks

Ryan, Looks like they shut you down on the class action link. Please be sure to let us know when it is back up (if they let you put it back up). Boy I hope this forum does not let us down in the 11th hour of our mutual fights (yours the dim headlights and mine the denting panels.) Feel free to message me directly. Cheers (Bill - JamGear)

I had the headlight TSB done on my truck. Not at all better. Almost seems like they simply raised the focal point. They say they replaced bulbs and reprogrammed the DCM. But it still looks like a very sub-par illumination and spread. With with all the HID and LED headlights on the road today throughout the country, all vehicles need higher lumens and better spread in their headlight systems to be safe. I will happily not only join the class action but donate my time to help make it happen. (JamGear)

And yet another suffer of the spontaneous denting on his GEN3 Silvy http://www.gm-trucks.com/forums/topic/165709-mysterious-small-dents-appearing-on-new-truck-weird/

Here are the internal links to discussion on the subject so far. I have about 20 owners now that have or have had this issue. I will be suing them personally as well as bring a class action. 1) http://www.gm-trucks.com/forums/topic/176667-mysterious-dents-on-front-fender/ 2) http://www.gm-trucks.com/forums/topic/178912-mfg-defect-mystery-dents-crinkles-and-ripples-on-my-2014-silverado/ 3) http://www.gm-trucks.com/forums/topic/163922-mysterious-dents-crinkles-along-bed-fender/ 4) http://www.gm-trucks.com/forums/topic/182845-gms-final-say-spontaneous-denting-of-my-2014-silverado/

Those of you that care to join me in a class action suit against GM for chronic rippling/denting on the bed rails panels, front quarter panels and roof on your Gen3 Silverado, Please message me (JamGear) directly. Sent from my SM-G900V using Tapatalk

Would you mind sharing a little more detail about your story? Every occurrence of this defect I can refer to will help me in my lawsuit against GM. Once I am successful with the lawsuit it will open up the door for anyone else who has the same defect to be assured they will get proper remedy. Sent from my SM-G900V using Tapatalk

Objectivity is always welcome. I am not out for blood, just to be made whole. The service manager has already advised GM nor the dealership will do anything if the dents reoccur post compliance with the "speculative" instructions from GM engineers. The issue remains, which will be the focus of my suit, that the engineers have incorrectly speculated the causality of this defect. It is due to improper or ineffective weld points at the bed rail. The dents increase with seasonal and or drastic changes in outside temperature and humidity and reoccur post paint less dent repair..

You make a very good point. Hence, why I waited 2 years and 5 interactions with the office of the CEO before I even hinted at the word. For I never really expected to have to resort to legal remedy. I am not sure why GM would behave like this. I have been courteous and manageable throughout the entire process. Maybe they think I will not follow thru. Who knows? What I do know is they have refused to remedy a defect which I can prove is their responsibility. It's really unfortunate that I must now burden the courts of NJ with this easily resolvable matter. I will create a new thread to chronicle my lawsuit active with GM. in this forum.