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GM Waiting to Fix Transmission on my 1 Day old AT4

Jimbo20
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Sierra Dan
Sierra Dan

Life is like a bunch of GM Transmissions.....  You Never Know What You're Gonna Get! 

HondaHawkGT
HondaHawkGT

Which is why I shared information on the reformulation of Dexron HP. THAT helps people. Guys like you and Benelli, going around repeating over and over "the 8-speed is junk", "your transmission is goi

econometrics
econometrics

This post oozes with irony. 

jagabom (Esquire) Enthusiast

jagabom (Esquire)

Posted
Posted
On 10/28/2018 at 8:15 PM, Jimbo20 said:

I waited several extra months for the AT4's release to purchase my truck.  Less than 1 day of light driving and 70 miles into my new truck the transmission started to slip in and out of gear.  I pulled into a parking lot and when I shifted into revers the truck slowly rolled forward.  Onstar had a flat bed tow truck there within an hour to bring the day old truck back to the dealer.  The dealer can not start work on the truck until GM approves the new transmission.  I am told that there is a lot of extra paperwork and approval because there are so few miles and it is a new truck.  I would think that GM would want to maintain their customer loyalty and support their new designs before aggravating buyers of new trucks.  I have been a lifelong GM buyer, but thinking that i should have gone with a Ford or Ram.  Has anyone else had to wait for repairs on a brand new vehicle?  

Ever get the problem fixed.

Jim

 

  • 3 weeks later...
ses3553 New Member

ses3553

Posted
Posted

I have a brand new 2019 High Country with repeated check engine light and what I suspect to be a transmission issue. At light acceleration there is a deep rumble/vibration that gets progressively louder the longer you drive. Seems to be in the 12-1500 rpm range at varying speeds. If you accelerate or release throttle all together it goes away. Service tech went for a ride with me and said it maybe the planetary gears. I said ok but it still doesn’t sound normal. Truck is month old and currently in the shop for the 4th time. This is after trading in my 2017 Denali that saw the shop 18 times in 2 years. It was so bad GM gave me an incentive to buy the next one - which is turning out to be a big POS too. 

Pinnacle Enthusiast

Pinnacle

Posted
Posted

there were design changes made to the 8L90 between the 2017's and the 2019's. I have read some of the documentation on those changes myself.

 

can you post some links

benelli Enthusiast

benelli

Posted
Posted (edited)
On 12/5/2019 at 2:49 PM, RaisedByWolves said:

I think he twisted it into a bowl for the pot needles hes smoking.

with a tag name like that no wonder  I feel sorry for you. pot needles? maybe in the trailer park you live in.

Edited by benelli
RaisedByWolves Enthusiast

RaisedByWolves

Posted
Posted
15 hours ago, benelli said:

with a tag name like that no wonder  I feel sorry for you. pot needles? maybe in the trailer park you live in.

Is this supposed to be an insult?

 

Looks like you were eating alphabet soup with your mouth open, and whatever letters hit the keyboard were posted.

 

 

How do I know it was alphabet soup?

 

Cause neither alphabet soup nor your post has any punctuation.

benelli Enthusiast

benelli

Posted
Posted
1 hour ago, RaisedByWolves said:

Is this supposed to be an insult?

 

Looks like you were eating alphabet soup with your mouth open, and whatever letters hit the keyboard were posted.

 

 

How do I know it was alphabet soup?

 

Cause neither alphabet soup nor your post has any punctuation.

What do you think . Your the proclaimed professor of ignorance.

RaisedByWolves Enthusiast

RaisedByWolves

Posted
Posted
20 hours ago, benelli said:

What do you think . Your the proclaimed professor of ignorance.

Hey look, capital letters and punctuation!

 

I taught the monkey a new trick!

 

You get a gold star for the day.

 

 

giphy.gif

benelli Enthusiast

benelli

Posted
Posted
1 hour ago, RaisedByWolves said:

Hey look, capital letters and punctuation!

 

I taught the monkey a new trick!

 

You get a gold star for the day.

 

 

giphy.gif

Thanks for the gold star. But I think it would look better on your trailer door. 

  • 1 month later...
19gmcsierraat4 Enthusiast

19gmcsierraat4

Posted
Posted
On 10/28/2018 at 7:15 PM, Jimbo20 said:

I waited several extra months for the AT4's release to purchase my truck.  Less than 1 day of light driving and 70 miles into my new truck the transmission started to slip in and out of gear.  I pulled into a parking lot and when I shifted into revers the truck slowly rolled forward.  Onstar had a flat bed tow truck there within an hour to bring the day old truck back to the dealer.  The dealer can not start work on the truck until GM approves the new transmission.  I am told that there is a lot of extra paperwork and approval because there are so few miles and it is a new truck.  I would think that GM would want to maintain their customer loyalty and support their new designs before aggravating buyers of new trucks.  I have been a lifelong GM buyer, but thinking that i should have gone with a Ford or Ram.  Has anyone else had to wait for repairs on a brand new vehicle?  

My 2019 AT4 is at the dealership waiting for a new transmission. Mine only has a leak that they can't fix. Did you get your truck back? any issues? if so how long did it take? I know that the GM strike caused a delay on parts. I had to wait about a month to get the seals when they tried to fix the leak the first time.

  • 2 weeks later...
KGP AT4_2019 New Member

KGP AT4_2019

Posted
Posted

WOW I DAY old.

 

I have 9800 miles on MY AT4 delivered 5 19 2019 and I am now waiting 2 weeks on a new Transmission.

What is going on at GM??

I had 2 Chev. Tahoes each with 180K and never a concern.

 

How long did it take for the repair and how is it running now?

 

 

Vicarod Enthusiast

Vicarod

Posted
Posted
45 minutes ago, KGP AT4_2019 said:

WOW I DAY old.

 

I have 9800 miles on MY AT4 delivered 5 19 2019 and I am now waiting 2 weeks on a new Transmission.

What is going on at GM??

I had 2 Chev. Tahoes each with 180K and never a concern.

 

How long did it take for the repair and how is it running now?

 

 

Doubt you will get an answer. 

Guy made two posts and hasn't been back since Nov. of 2018.

 

Sorry to hear about your truck. 

What transmission is in it and what happened?

KGP AT4_2019 New Member

KGP AT4_2019

Posted
Posted

I have the 6.3Ltr and Allison 10 Speed.

was making a wining turbo sound and than jerked and jumped when put in reverse than would not leave 1st or 2ed gear got home, 1 mile away at 5mph with 2k RMP.

dealer says we are waiting on GM for a replacement 2 weeks now no word?

 

wacnstac Enthusiast

wacnstac

Posted
Posted
On 2/11/2020 at 2:51 AM, 19gmcsierraat4 said:

My 2019 AT4 is at the dealership waiting for a new transmission. Mine only has a leak that they can't fix. Did you get your truck back? any issues? if so how long did it take? I know that the GM strike caused a delay on parts. I had to wait about a month to get the seals when they tried to fix the leak the first time.

Which transmission do you have?

benelli Enthusiast

benelli

Posted
Posted (edited)
12 hours ago, wacnstac said:

Which transmission do you have?

Probably the 8 speed. My had new fluid flush with that new Mobile 1 crap . It made it worse. When you call the service department and complain that same issue is there . They say “strange we dont get many in with transmission problems” lol lol . I think Gm has a special course they send there service reps too instruct them how to blow smoke up peoples a**. 

Edited by benelli

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