Jump to content

Auto 4WD problems!!??

TYLERZ7180

By TYLERZ7180
in Troubleshooting & Recalls

 Share

Recommended Posts

2014 Sporty Shorty Enthusiast

2014 Sporty Shorty

Posted
Posted

Mine is pretty loud and obvious that the 4wd is working when I have it engaged. Even if auto I still have the transfer case noise going on, I think it's normal. Do you have a SLT or SLE? I find when I drive my Dads SLT its much quieter than mine which is an SLE. The SLT more than likely has more sound deadening in it even though the interiors look the same.

  • Replies 37
  • Created
  • Last Reply

Top Posters In This Topic

Popular Days

Top Posters In This Topic

Popular Days

Popular Posts

C6 Doberman
C6 Doberman

The Dealership installed everything on my truck and I have a signed document stating that they will still stand behind factory warranty.

C6 Doberman
C6 Doberman

They are pretty awesome! I took it in because I was having some vibration issues at 70 mph(more than there should be). They replaced all 4 tires(35x12.50x20) and fixed the problem. They also gave m

GMCustomerService
GMCustomerService

This is certainly not what we like to hear, cmorrison.  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

crushNchowda Senior Enthusiast

crushNchowda

Posted
Posted

The Dealership installed everything on my truck and I have a signed document stating that they will still stand behind factory warranty.

Man you got much cooler dealers than I do up here! Lucky!

C6 Doberman Enthusiast

C6 Doberman

Posted
Posted

Man you got much cooler dealers than I do up here! Lucky!

They are pretty awesome! I took it in because I was having some vibration issues at 70 mph(more than there should be). They replaced all 4 tires(35x12.50x20) and fixed the problem. They also gave me a 2013 Yukon Denali for a loaner. Thing only had 10 miles on it!! As a bonus they have a theatre with like a 100+" screen in the waiting room!!!!!

  • Like 1
Cap'n Pete Enthusiast

Cap'n Pete

Posted
Posted

I've had my truck for about 6 weeks, so it has very low mileage still (about 1400 miles), but there is definitely a little extra audible noise when driving in Auto or 4Hi. It's due to the front diff being engaged. I'd say the sound is "normal", but that's me. I'm not a GM service department, but I suspect they'll tell you the same.

GMCustomerService Senior Enthusiast

GMCustomerService

Posted
Posted

Hi TYLERZ7180,

 

I understand that you are experiencing problems with the Automatic 4WD in your vehicle. I am glad to hear that you are taking your vehicle to your dealership. Please let us know if we can further assist you with your concern. If we can be of any assistance, please send us a private message.Thank you.

 

Kristen A.

GM Customer Care

  • 2 months later...
Isriam Enthusiast

Isriam

Posted
Posted

Do NOT use auto with this sytem. I've replaced 3 issues in transfer cases on my 2007-2013 Tahoe while using auto. My wife thinks it means exactly what it says, but it is not intended that way according to GM. I've had it at 3 dealers now and they say always use 2WD for day to day, and only auto when you will be in 4WD conditions.

 

Spent thousands so far learning the transfer case is not designed to be driven in auto all the time.

pm26 Senior Enthusiast

pm26

Posted
Posted (edited)

 

 

The Dealership installed everything on my truck and I have a signed document stating that they will still stand behind factory warranty.

Are you really expecting an answer other than "NORMAL" ? :lol:

Edited by pm26
fondupot Senior Enthusiast

fondupot

Posted
Posted (edited)

Do NOT use auto with this sytem. I've replaced 3 issues in transfer cases on my 2007-2013 Tahoe while using auto. My wife thinks it means exactly what it says, but it is not intended that way according to GM. I've had it at 3 dealers now and they say always use 2WD for day to day, and only auto when you will be in 4WD conditions.

 

Spent thousands so far learning the transfer case is not designed to be driven in auto all the time.

 

 

This is correct. Don't use auto unless needed. In regular dry driving situations. 2hi is fine. using auto all the time is just going to wear things out faster.

Edited by fondupot
pm26 Senior Enthusiast

pm26

Posted
Posted (edited)

The only vehicles that are designed to remain in auto 4WD mode all the time are full time 4WD cars and trucks.

Edited by pm26
chrisuns Enthusiast

chrisuns

Posted
Posted (edited)

The part that isn't rated for constant duty is the ball bearings in the control actuator lever. - Its the part that actually applies the clutches in the TC. 340018d1393791517-mp3024hd-transfercase-

The balls are 13mm (0.512) in and should be made of a hardened steel. - GM went cheap on this part and they degrade. Jeeps run the same case that is constant duty with the hardened ball bearings.

Edited by chrisuns
  • 2 months later...
Pennywise906 Enthusiast

Pennywise906

Posted
Posted

Uggghhh...well mines going to the dealer tomorrow AGAIN!! This makes me sick to my stomach!

I had this as well (Stock z71 LTZ). GM sent an engineer up here to take a look as there were several from my local dealership having this issue. After the engineers report was sent to Detroit they replied with "It's due to a square chain in the transfer case (instead of rounded) creating 'noise,". And decided not to do anything about it. Good thing I have a good relationship with my dealer as they went the extra mile... had me take a fresh of the hauler z71 for a weekend to see if the problem existed on that truck as well. After driving it for the weekend and determining it did NOT have the vibration issue my dealer swapped my transfer case out for the one on the newer truck. Problem solved... but don't expect anything from GM themselves. I tried working through their customer assistance line and got nowhere. Your best bet is finding a dealer that will take the time to work with you.

fondupot Senior Enthusiast

fondupot

Posted
Posted

I had this as well (Stock z71 LTZ). GM sent an engineer up here to take a look as there were several from my local dealership having this issue. After the engineers report was sent to Detroit they replied with "It's due to a square chain in the transfer case (instead of rounded) creating 'noise,". And decided not to do anything about it. Good thing I have a good relationship with my dealer as they went the extra mile... had me take a fresh of the hauler z71 for a weekend to see if the problem existed on that truck as well. After driving it for the weekend and determining it did NOT have the vibration issue my dealer swapped my transfer case out for the one on the newer truck. Problem solved... but don't expect anything from GM themselves. I tried working through their customer assistance line and got nowhere. Your best bet is finding a dealer that will take the time to work with you.

 

So they actually changed the transfer case design part way thru production....so much for consistency.

Pennywise906 Enthusiast

Pennywise906

Posted
Posted

 

So they actually changed the transfer case design part way thru production....so much for consistency.

I don't think they actually changed the design (yet, at least)... I just think there is a big enough difference for certain tolerances on the internal parts. So two trucks off the same line on the same day could have some internal parts from a supplier that are on opposite ends of the tolerances and one could exhibit the behavior and might not. Just a theory from dealership and so far I have been satisfied with the swapped TC.

fondupot Senior Enthusiast

fondupot

Posted
Posted

I don't think they actually changed the design (yet, at least)... I just think there is a big enough difference for certain tolerances on the internal parts. So two trucks off the same line on the same day could have some internal parts from a supplier that are on opposite ends of the tolerances and one could exhibit the behavior and might not. Just a theory from dealership and so far I have been satisfied with the swapped TC.

 

I know my truck is considerably "noisier" in auto and 4hi, but I don't use it enough to complain.

Pennywise906 Enthusiast

Pennywise906

Posted
Posted

 

I know my truck is considerably "noisier" in auto and 4hi, but I don't use it enough to complain.

Yeah, mine was so bad I could feel it in the floor boards and the steering wheel, and my passengers could feel it in their feet as well. Now it seems more like you are describing yours, "nosier" but tolerable.

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

  • Recently Browsing   0 members

    • No registered users viewing this page.

  • Forum Statistics

    250.3k
    Total Topics
    2.7m
    Total Posts

  • Member Statistics

    342,739
    Total Members
    8,960
    Most Online
    chfkief
    Newest Member
    chfkief
    Joined

  • Who's Online   2 Members, 0 Anonymous, 1,441 Guests (See full list)

  • Latest Articles

  • Posts

    • Chuck FB
      Joke Thread

      By Chuck FB · Posted

      Fred was in the fertilized egg business. He had several hundred young pullets, and ten roosters to fertilize the eggs He kept records, and any rooster not performing went into the soup pot and was replaced. This took a lot of time, so he bought some tiny bells and attached them to his roosters. Each bell had a different tone, so he could tell from a distance, which rooster was performing. Now, he could sit on the porch and fill out an efficiency report by just listening to the bells. Fred's favourite rooster, old Butch, was a very fine specimen, but this morning he noticed old Butch's bell hadn't rung at all! When he went to investigate, he saw the other roosters were busy chasing pullets, bells-a-ringing, but the pullets, hearing the roosters coming, would run for cover. To Fred's amazement, old Butch had his bell in his beak, so it couldn't ring. He'd sneak up on a pullet, do his job and walk on to the next one. Fred was so proud of old Butch, he entered him in the City Show and he became an overnight sensation among the judges. The result was the judges not only awarded old Butch the "No Bell Piece Prize," but they also awarded him the "Pulletsurprise" as well. Clearly old Butch was a politician in the making. Who else but a politician could figure out how to win two of the most coveted awards on our planet by being the best at sneaking up on the unsuspecting populace and screwing them when they weren't paying attention. Vote carefully in the next election, you can't always hear the bells.
    • chfkief
      FS: Black Bear Performance AutoCal Tuning System

      By chfkief · Posted

      Do you still have?
    • 3CarSeatDad
      High Country Suburban build confirmation

      By 3CarSeatDad · Posted

      Can someone confirm if the GM order workbench terminal is able to validate a custom build sequence:   1) Initialize the Allocation Base: Open a new vehicle build queue, select the 2026 Chevrolet Suburban 4WD, and pick the High Country (3LZ Preferred Equipment Group).   2) Select the Diesel Powertrain: Go directly to the engine configuration screen and choose RPO code LZ0 (3.0L Duramax Turbo-Diesel). Ensure it maps to the MHS 10-speed automatic transmission.   3) Deploy the Seating Swap: Navigate to the Interior Options screen and enter RPO code ATT to replace the standard captain's chairs with the power-release 60/40 bench seat. Because you are not trying to force a separate luxury or air-suspension bundle, the standard, premium D07 Fixed Floor Console remains active. The system will accept this change immediately without triggering a warning message.   3)Apply Heavy-Duty Hauling Capability: Input RPO code NHT (Max Trailering Package). The commercial terminal will automatically bundle the required trailering hardware and software modules to support the diesel engine's maximum towing capacity.   5) Layer the Premium Tech and Glass: Separately add code C3U (Panoramic Power Sunroof) and code UKL (Super Cruise) to the order screen.   6) Run the Final Validation: Click the "Validate Order" button at the bottom of the interface.
    • revmanii
      Looking at ordering a '26 WT because I want a std cab, std bed

      By revmanii · Posted

      Spent the last hour or 2 googling and reading up on the spacer thing. I don't like the loss of thread contact on the slip on spacers, but it appears you can get "extended" lug nuts that reach into the hole of the wheel to get back the lost threads. Looks like the only true hubcentric slip on spacers are at least .375". I'd want as little as I could get away with and don't want to cause other clearance issues going any thicker. Bora seems to offer what appears to be a well made .375" spacer and extended lug nuts. I searched here and did find a couple threads recommending Bora. But not cheap. By the time I buy spacers and lugs, new TPMS sensors, then pay a tire shop to install the new sensors, I suspect I'm going to be in over $400. Thinking about running out and getting some washers to put behind the wheel to see if .375" is enough to clear calipers, turn lock to lock without rubbing, and to see if the wheels/tires look strange pushed out a little. This would just be to check fitment.
    • Core-Lokt
      Road Master Active Suspension

      By Core-Lokt · Posted

      Roadmaster makes some quality parts; I have their sway bar. I considered the RAS, but I ended up bagging. I didn't know what kind of ride I'd get with RAS, and the bags have interior jounce bumpers, so I can run 0 pounds pressure. I figured I'd have the best of normal suspension ride with assist on-demand. But it seems you got pretty much the same in one item.

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...