GM's 6th Gen V8 ! What would you like to see?

[newdude]

51 minutes ago, 64BAwagon said:

with potentially a gasoline particulate filter. 

 

 

This part I feel like is just about a given.  And its what had me really questioning if the first round of spyshots where you can see the exhaust, if it was a gas or diesel as it had the cooling venturis.

[KARNUT]

50 minutes ago, Srode1 said:

I have 3 things I would like to see from the next gen

 

1. Reliability and / or 200,000 mile drive train warranty for engine and transmission

2. Reliability and/or 200,000 mile drive train warranty for engine and transmission
3. Reliability and/or 200,000 mile drive train warranty for engine and transmission

 

These trucks have a lot going for them in new features BUT - there is zero chance of me buying a new or used 19-25 GM full sized truck right now because of the Engine / Transmission problems and I'm in the market for a new/different truck. 

 

I have a friend who is good friends with an older experienced GM Engineer who is about to retire.  My friend told me his advice is don't buy the 19-current trucks, they have too many design issues due to a huge loss of talent in GM's Engineering group prior to the release of this newer drivetrain. 

 

 I'm currently looking for a 17/18 6.2 short bed with max tow package low mileage to give me 10 years of service.  The AFM might give me problems me but the chances are much lower than the newest DOD system failures, and I can deal with clunky shifting once in a while in the 8 speed.  

Nice dream. 10 years, 150K bumper to bumper warranty and a free rental if something fails. I’d buy a new truck. A Texas Edition like my last one. I’d sell my 3 used vehicles I keep around because I don’t like anything new. Right now I have more confidence in my 2002 avalanche than most full sized truck. Right now I have 5 vehicles. It costs me less than 6 months of truck payments to keep insurance and registration on all of them. Maintenance spread through all costs no more than having one. They all look almost as new. I don’t like the new electronics so I’m not missing anything. But I like investing in the economy so I’d buy a new truck. If the warranty was as I stated previously.

[Transient]

15 hours ago, Srode1 said:

I have 3 things I would like to see from the next gen

 

1. Reliability and / or 200,000 mile drive train warranty for engine and transmission

2. Reliability and/or 200,000 mile drive train warranty for engine and transmission
3. Reliability and/or 200,000 mile drive train warranty for engine and transmission

 

These trucks have a lot going for them in new features BUT - there is zero chance of me buying a new or used 19-25 GM full sized truck right now because of the Engine / Transmission problems and I'm in the market for a new/different truck. 

 

I have a friend who is good friends with an older experienced GM Engineer who is about to retire.  My friend told me his advice is don't buy the 19-current trucks, they have too many design issues due to a huge loss of talent in GM's Engineering group prior to the release of this newer drivetrain. 

 

 I'm currently looking for a 17/18 6.2 short bed with max tow package low mileage to give me 10 years of service.  The AFM might give me problems me but the chances are much lower than the newest DOD system failures, and I can deal with clunky shifting once in a while in the 8 speed.  

If you want to know why you'll never see a 200,000 mile warranty, go talk to your friend that's good friends with the GM engineer about a little thing called "planned obsolescence."  I'd love to hear what GM's planned obsolescence is for their vehicles.  Is it as little as 100,000 miles, or do we get to stretch the legs to 150,000 miles?

Edited March 21 by Transient

[4banger]

Yes on adding 2 cylinders to the turbomax and slightly bigger turbo if needed. A manual option would be cool but 8-spd is plenty with the torque curve. Keep it long stroke, single turbo, inline. Light and simple. Just need transmission to handle the extra power. Which at 77.5hp/107.5 ft/lb per cylinder would be 465 hp and 645 ft/lbs and be the sport motor in half tons but a perfect base engine in the 3/4 and 1 tons. Boost is the future. A 6 cylinder turbomax with its 680cc jugs would be 4080cc (4.1 liter). Would need a stout transmission and running gear for that amount of torque. They nailed the output levels for the 2.7t and lighter running gear to suite half tons. 
 

That could make me waffle between motors. No NA motors in my future. Too heavy complex and loss of power at altitude. Keep the torque curve down low with long stroke big jugs.

[silveradosid]

that's a dream but i am with you all the way 4banger

[newdude]

On 3/21/2025 at 12:45 AM, Transient said:

If you want to know why you'll never see a 200,000 mile warranty, go talk to your friend that's good friends with the GM engineer about a little thing called "planned obsolescence."  I'd love to hear what GM's planned obsolescence is for their vehicles.  Is it as little as 100,000 miles, or do we get to stretch the legs to 150,000 miles?

 

 

What's funny is GM is responsible for planned obsolescence existing in the first place.   Then CEO Alfred P. Sloan was the brains behind it in 1924.  Change the design of vehicles every year with refreshed looks to make people want to buy a car every year.  It was even viewed as a means of pulling the world out of the Great Depression as it would cause reasons for people to spend and grow the economy back.

[Srode1]

On 3/20/2025 at 10:56 AM, KARNUT said:

Nice dream. 10 years, 150K bumper to bumper warranty and a free rental if something fails. I’d buy a new truck. A Texas Edition like my last one. I’d sell my 3 used vehicles I keep around because I don’t like anything new. Right now I have more confidence in my 2002 avalanche than most full sized truck. Right now I have 5 vehicles. It costs me less than 6 months of truck payments to keep insurance and registration on all of them. Maintenance spread through all costs no more than having one. They all look almost as new. I don’t like the new electronics so I’m not missing anything. But I like investing in the economy so I’d buy a new truck. If the warranty was as I stated previously.

I ended up replacing my 15 LTZ with a 14,000 mile '18 LTZ 6.5 bed (Looks, smells and drives like new) comparably equipped because I wasn't willing to deal with the high probability of reliability issues with a new one.  For the price difference between a new one and what I paid for the '18 I can get extended warranty's to take me to the 10 yr 150K for drive train and still have money in the pocket.  Plus it will be much less likely to leave me sitting without a vehicle for a long time while GM tries to find parts to repair it.  Getting 23mpg driving 70mph on the interstate empty, good enough for me from a 6.2.   With the current mileage and how much I drive, this will probably last me long enough to not need a truck again when I need to replace it. 

 

Note to GM - your truck reliability problems made for a missed sale to me. 

Edited April 16 by Srode1

[Transient]

6 hours ago, Srode1 said:

I ended up replacing my 15 LTZ with a 14,000 mile '18 LTZ 6.5 bed (Looks, smells and drives like new) comparably equipped because I wasn't willing to deal with the high probability of reliability issues with a new one.  For the price difference between a new one and what I paid for the '18 I can get extended warranty's to take me to the 10 yr 150K for drive train and still have money in the pocket.  Plus it will be much less likely to leave me sitting without a vehicle for a long time while GM tries to find parts to repair it.  Getting 23mpg driving 70mph on the interstate empty, good enough for me from a 6.2.   With the current mileage and how much I drive, this will probably last me long enough to not need a truck again when I need to replace it. 

 

Note to GM - your truck reliability problems made for a missed sale to me. 

The irony here is that you have the first generation of the 8-speed transmission

[Transient]

6 hours ago, newdude said:

 

 

What's funny is GM is responsible for planned obsolescence existing in the first place.   Then CEO Alfred P. Sloan was the brains behind it in 1924.  Change the design of vehicles every year with refreshed looks to make people want to buy a car every year.  It was even viewed as a means of pulling the world out of the Great Depression as it would cause reasons for people to spend and grow the economy back.

Yes, the 50s were great when this was implemented, but that was 70+ years ago.  I'm talking about life expectancy of the 2nd most expensive item everybody in North America purchases.

[silveradosid]

ya it is sad that a new truck costs more than i paid for my house in 88

[Silverado4x4]

1 hour ago, silveradosid said:

ya it is sad that a new truck costs more than i paid for my house in 88

Isn’t that the truth, my wife's Tahoe cost more than our first house in 89.

[Srode1]

18 hours ago, Transient said:

The irony here is that you have the first generation of the 8-speed transmission

Exactly why I bought it, 8L90 is a solid performer with an occasional clunky shift once the new fluid is in it - and no 10 speed valve body problems which apparently have no known solution. 

Edited April 17 by Srode1

[Transient]

14 hours ago, Srode1 said:

Exactly why I bought it, 8L90 is a solid performer with an occasional clunky shift once the new fluid is in it - and no 10 speed valve body problems which apparently have no known solution. 

You mean the 10 speed valve body issue that affected the 3.0 Duramax engine, but not the 6.2 and 5.3 V8s?  Hmm...

 

That first gen 8 speed has a class action lawsuit that's been going on for years. 

[Srode1]

8 hours ago, Transient said:

You mean the 10 speed valve body issue that affected the 3.0 Duramax engine, but not the 6.2 and 5.3 V8s?  Hmm...

 

That first gen 8 speed has a class action lawsuit that's been going on for years. 

I don't know of any issues with 8 speeds that left lots of trucks incapacitated waiting on parts for months at dealers do you?  Once the updated fluids are put in and in some cases a new torque converter the they have no issues with the exception of an occasional clunky shift, that's been my experience and what I've read regardless of any class action that's unresolved.   

 

You might be thinking it's just diesel because that's where the safety recall was initiated 

 

[newdude]

3 minutes ago, Srode1 said:

 

I don't know of any issues with 8 speeds that left lots of trucks incapacitated waiting on parts for months at dealers do you?  Once the updated fluids are put in and in some cases a new torque converter the they have no issues with the exception of an occasional clunky shift, that's been my experience and what I've read regardless of any class action that's unresolved.   

 

 

 

Pretty much.  We've opened up way more 10 speeds than 8s.  

 

I'd take an 8 over a 10 right now until they get their act together.  34,000mi on my 22.5 2.7 HO and 8 speed, that transmission has given me zero issues so far.  

 

Edited April 18 by newdude