Jump to content

Recommended Posts

Posted
23 hours ago, Willyone said:

Thanks for that info Pinnacle. My '16 Silverado 5.3 has the shake. Comes in starting in the low 70 MPH range. Is there a part number or item number for the Mobile 1 trans fluid that you mention?

 

Also, can an independent shop do the fluid flush, or does the truck need to be plugged into a dealer/GM computer for a reflash after the flush is completed. I'd like to avoid the dealer if possible due to no to little faith in their abilities.

 

Thanks again

Take that with you to a gm dealerMC-10163890-9999.pdf

  • 1 month later...
Posted

I’m experiencing the same issue 86,000 km 

- lowered air pressure 32PSI … some change 

 

riding on the Denali 22” rims .. feels like it’s in the right front .. then left .. 

 

spoke with a neighbour with a similar truck and advised me that the rear stock brakes grab and transfer the pulse through the aluminum driveshaft to the front and GM has shown him supporting documentation..

 

rotating tires today will update post soon 

also have read transmission service could help the problem 

  • 6 months later...
Posted

I have a 2018 Silverado High Country 4x4 with 128k miles.  It started to shudder just recently.  Definitely feels like the driveshaft is unbalanced, but doesn’t shudder/shake/vibrate all the time.  I have no idea what makes it start or stop.  I had new tires installed, alignment done and even had the wheels rebalanced.  Three different places said the steering and suspension is tight and didn’t find any problems.  I’m hoping GM does a major recall on this problem as I cannot be the only one with the shudder/shake/vibration.  If it’s the driveshaft, why is it happening after,128k miles?

Posted
1 hour ago, Richard Carrillo said:

I have a 2018 Silverado High Country 4x4 with 128k miles.  It started to shudder just recently.  Definitely feels like the driveshaft is unbalanced, but doesn’t shudder/shake/vibrate all the time.  I have no idea what makes it start or stop.  I had new tires installed, alignment done and even had the wheels rebalanced.  Three different places said the steering and suspension is tight and didn’t find any problems.  I’m hoping GM does a major recall on this problem as I cannot be the only one with the shudder/shake/vibration.  If it’s the driveshaft, why is it happening after,128k miles?

Could be that something is just wearing out 

Posted
2 hours ago, Richard Carrillo said:

I have a 2018 Silverado High Country 4x4 with 128k miles.  It started to shudder just recently.  Definitely feels like the driveshaft is unbalanced, but doesn’t shudder/shake/vibrate all the time.  I have no idea what makes it start or stop.  I had new tires installed, alignment done and even had the wheels rebalanced.  Three different places said the steering and suspension is tight and didn’t find any problems.  I’m hoping GM does a major recall on this problem as I cannot be the only one with the shudder/shake/vibration.  If it’s the driveshaft, why is it happening after,128k miles?

You say you had tires rebalanced. But did you have Road Force Balancing done or just traditional balancing? It does make a difference.

Posted
3 hours ago, Richard Carrillo said:

I have a 2018 Silverado High Country 4x4 with 128k miles.  It started to shudder just recently.  Definitely feels like the driveshaft is unbalanced, but doesn’t shudder/shake/vibrate all the time.  I have no idea what makes it start or stop.  I had new tires installed, alignment done and even had the wheels rebalanced.  Three different places said the steering and suspension is tight and didn’t find any problems.  I’m hoping GM does a major recall on this problem as I cannot be the only one with the shudder/shake/vibration.  If it’s the driveshaft, why is it happening after,128k miles?

Do you have the 6 or 8 speed? Have you changed your trans fluid and filter lately?

  • Like 1
Posted
19 minutes ago, Richard Carrillo said:

Not sure which tranny it has.  No, tranny not serviced yet.

Some people have had their trans fluid and filter changed and reported a positive difference in the issue you’re having.

  • Like 1
Posted
On 4/29/2022 at 8:18 AM, Pinnacle said:

Take that with you to a gm dealerMC-10163890-9999.pdf

 

19 hours ago, steelerdude15 said:

Some people have had their trans fluid and filter changed and reported a positive difference in the issue you’re having.

 

19 hours ago, Richard Carrillo said:

Thanks.  I’m planning on taking it to the dealership before I head back to NM.

 

19 hours ago, Richard Carrillo said:

Thanks.  I’m planning on taking it to the dealership before I head back to NM.

There was a TSB that came out around 2016 ~ 2017 for the tranny flush and replacement with Mobil 1 Blue Strip I think it was.  I had it done for tranny shudder problem which it fixed.  It also reduced but did not eliminate low speed hard shift problem between 1st and 2nd.  For some, torque converter replacement was necessary to eliminate shudder.  About vibration problems; I not aware of any single fix for that.  If you read back through the hundreds of posts you find the root cause blamed on virtually every part on the truck.  I don’t think it was ever eliminated from this generation truck which is 2014 ~ 2020 or thereabouts.

  • Like 1
  • Thanks 1
Posted

I had the shake in my 18 Silverado at 45k miles. Chevy dealer replaced the fluid with Mobil One under warranty and shudder completely went away until about a month ago. Just over 90k and intermittent shudder at 40, 50, and 60 mph has returned. Doesn't seem as severe as before. Doesn't happen over 65 mph. Rotated tires with no difference. They are newer Michelins with about 15k on them. Wondering if fluid has separated again? Saw someone mention rotors. Mine still look great and pads are original. Most of my miles are highway. Any thoughts?

Posted
On 1/1/2023 at 10:09 AM, Richard Carrillo said:

I have a 2018 Silverado High Country 4x4 with 128k miles.  It started to shudder just recently.  Definitely feels like the driveshaft is unbalanced, but doesn’t shudder/shake/vibrate all the time.  I have no idea what makes it start or stop.  I had new tires installed, alignment done and even had the wheels rebalanced.  Three different places said the steering and suspension is tight and didn’t find any problems.  I’m hoping GM does a major recall on this problem as I cannot be the only one with the shudder/shake/vibration.  If it’s the driveshaft, why is it happening after,128k miles?

This is certainly not what we like to hear, Richard Carrillo.  Please know, customer satisfaction is extremely important to us. Our team would be more than happy to take a closer look into the concerns with your 2018 Chevrolet Silverado High Country. To do so, please send an email to [email protected] with ATTN: Richard Carrillo/GM Trucks in the subject line.

Please include your contact information, VIN, a brief description of your concern, and the name of your preferred dealership. We look forward to hearing from you. To learn more about GM’s Privacy Policy, please visit https://www.gm.com/privacy-statement.html. The information you provide may be monitored and recorded and is subject to the GM Privacy Statement.
 
Privacy Statement | General Motors
Your privacy is important to General Motors. This Privacy Statement addresses the personal information GM collects and how GM handles that personal information.
www.gm.com
 

Posted
On 1/4/2023 at 4:05 PM, john christ said:

I had the shake in my 18 Silverado at 45k miles. Chevy dealer replaced the fluid with Mobil One under warranty and shudder completely went away until about a month ago. Just over 90k and intermittent shudder at 40, 50, and 60 mph has returned. Doesn't seem as severe as before. Doesn't happen over 65 mph. Rotated tires with no difference. They are newer Michelins with about 15k on them. Wondering if fluid has separated again? Saw someone mention rotors. Mine still look great and pads are original. Most of my miles are highway. Any thoughts?

Is the vibration occurring when you’re accelerating or braking? If it only happens when you’re braking then the rotors are warped and need replaced. If it’s doing it while accelerating, it’s something else.

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

  • Latest Articles

  • Posts

    • Its coolant disguised as oil.   TSB - 20-NA-166 1..3   "To inspect for this concern, add coolant dye to the system, run the engine through warm up, pressurize the cooling system after warming the engine to operating temperature (let the engine cool overnight) and inspect the suspect cylinder with a borescope for coolant dye evidence. At times it may be necessary to remove the head for inspection. If the head casting line is the concern, the intake port will be wet with a coolant oil mix"
    • Can you sample the pooled liquid, enough to confirm it is oil?   ...That its not fuel or coolant.   Also, make sure combustion gases aren't entering the cooling system.   Simply put, either oil being pushed up past the rings (this really isn't possible), oil leaking past the head gasket, oil leaking past the valve, oil entering through the intake air path. If none of this is likely - it may not be oil.   What could be likely is the fuel injector leaking down. A puddle of gas would still smoke and rough idle. (Same cylinder has the same problem after injector replacement?)   What is the crank time first thing in the morning, when the puddle would be present? Does it seem like the high pressure fuel pump needs an extra second or two to rebuild the pressure that injector 8 may have let bleed off? Check the fuel pressure via a scanner prior to starting the engine.    
    • Good information!  I didn't know about the dementia aspect and asked for a general for my second knee. I'd heard that recovery room time is usually shorter with a general.   The anesthesiologist talked me out of it and I had the spinal.  Inconvenience and/or discomfort is a small price to pay for reduced risk!
    • This is for those over 70 years of age contemplating joint replacement surgery involving general anesthesia. Even some 55 yrs. ago when I took my pharmacology class the dangers of developing dementia in the elderly that had general anesthesia were beginning to be recognized. Over the years there has been some refinement in the cautionary warnings, avoid general anesthesia if possible if you've had close to 10 priors, especially over the age of 70 and/or a family history of dementia. I'm not including the twilight anesthesia induced by propofol often used in cytoscopies or colonscopies. Seriously think about seeing a neurologist and undergo cognitive testing before proceeding if any of those criteria apply to you. Spinal anesthesia may be an option in some cases. I'm in the above camp and although I could use a new right knee, I get fidgety according to a prior orthopedic surgeon when the bone saw spools up or maybe it was the smell of saw blade meeting bone, anyhow I may have one general anesthesia left in me which I will pocket for now and I'm choosing mind over mobility, anyway where did I leave my damn cane!
    • We understand your frustrations with your auto start/stop, fuel gauge and cruise control concerns since your latest update, @LarT-26. You mentioned getting repairs completed, however, have your concerns been resolved? If not, we would like to learn more so we may explore the best path of assistance moving forward alongside your local dealership. When you have a moment, please visit: https://s.gmc.com/support-request and complete the request form with all pertinent details. This will help us to better understand your concern and ensure that it is routed correctly. We will keep an eye out for your outreach.
  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...