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Waiting on a part for over 2 months.

DkJohnstone

By DkJohnstone
in 6.6L Duramax Diesel (L5P)

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DkJohnstone New Member

DkJohnstone

Posted
Posted

I have a 2023 Sierra 3500 Diesel AT4.  My truck broke down on Aug. 16, 2024.  It is still sitting in the shop. There is no projected date for the part to arrive.  I am waiting for the Transmission Control Valve.  Anyone know what the delay is?

ArrowsmithPML Enthusiast

ArrowsmithPML

Posted
Posted

What's wrong with it or do you know?

 

I have a 2021 AT4 3500 and I've all sorts of DEF issues (mostly due to cold weather) but otherwise it's been pretty good.

davidm767 Enthusiast

davidm767

Posted
Posted

This time last year it took 6 weeks to get my wife's TCV on her 10-speed 10L80 3.0L Duramax. It ended up failing on their test drive and we waited another 6 weeks to get a whole new transmission. It's sad they haven't built up enough TCV spares on both the 6.6L and 3.0L to stamp out long waiting times. I've thankfully had no drivetrain issues on my '24 2500 6.6L Duramax, but my household is sitting at .500 batting average for failures so I'm skeptical at best with the reliability of these 10 speeds both 10L80 and 10L1000. 

newdude Senior Enthusiast

newdude

Posted
Posted
On 10/16/2024 at 6:37 PM, DkJohnstone said:

I have a 2023 Sierra 3500 Diesel AT4.  My truck broke down on Aug. 16, 2024.  It is still sitting in the shop. There is no projected date for the part to arrive.  I am waiting for the Transmission Control Valve.  Anyone know what the delay is?

 

 

I've got one ordered August, another September.  Still no parts.  GM has no published ETAs for it.  

 

All you can do is wait, or trade in and get another truck.  

  • 2 weeks later...
Chevyfan3 Enthusiast

Chevyfan3

Posted
Posted
On 10/16/2024 at 6:37 PM, DkJohnstone said:

I have a 2023 Sierra 3500 Diesel AT4.  My truck broke down on Aug. 16, 2024.  It is still sitting in the shop. There is no projected date for the part to arrive.  I am waiting for the Transmission Control Valve.  Anyone know what the delay is?

Possibly the latest recall involving this part has something to do with it. They might not have replacements that are not defective yet. 

 

How many miles were on your 23' when this happened?

  • 4 weeks later...
A Chap Enthusiast

A Chap

Posted
Posted

Depending on the state, lemon law may apply.  If a vehicle is out of service 30+ days during warranty period you may have a claim.  Do some research, if needed serve notice of your intent to the dealer.  Insane that so many people are left without a vehicle for unreasonable amounts of time. That's a failure on GM, and the customer is left hanging.  Especially with HD trucks, many make a living using these vehicles and can't afford to be without for extended periods.  

  • 4 weeks later...
TroyDairy Enthusiast

TroyDairy

Posted
Posted (edited)

I had breakdown of the TCV as well 2 weeks ago.  Dealer in Ellensberg should have truck to me this afternoon.  14 days to the hour.  My local dealer up here on coast said there were 20 TCV in the US last week in Ohio.  I told Service lady in E-berg this and next day she said mine was on a rush since so new, and she bitched.  You dealer is sucking.

 

  Nextgen diesel is making new parts to update the TCV (which says to me there is a issue if you got aftermarket making parts).  Some videos online it looks very straight forward and guy got it fixed asap instead of waiting weeks or months.

 

FWIW my local dealer said they had not seen any TCV issues in HD...then in last days of NOV 2 showed up in 8 days so now wondering if it's gonna start a wave..  I have not asked how Dec is going.  '23-24 HD seem worse from my reading....but who knows?

 

2023 3500 Denali HD 39000 miles

Edited by TroyDairy

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