GM's impressive new 6.2L V8

[daveyboy]

I wouldn't be too concerned about one stillborn engine just yet. There are always teething issues with brand new technology. Look how many Ecoboom engines Ford has replaced and that engine has already been around a few years. Chrysler also had some teething issues on the DI 3.6L when they first installed it in the Jeep Wrangler. With those teething issues gone that 3.6L is proving to be the best engine to ever grace the frame rails of any Jeep.

I worry about GM actually doing something about problems. The 6.0 leaks in my wife's rig, and started when basically brand new--a problem that plagues YEARS (and potentially millions) of LS engines. That is not a teething issue.

 

[Buliwyf]

If it's as good as the 6.0L GM then I'm sure it'll be a fine engine.
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Too bad it's in a truck I just can't stand. Our fleet trucks are littered with weird nonsense.
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Where do 1/2 tons get their tow rating? Ever half ton I've driven was scary far below their tow rating. Do they just put a ton of numbers in a bag and blindly pick one? Does the marketing team choose it? 12,000 pounds? Yeah, good luck with that.

 

[Larry]

I worry about GM actually doing something about problems. The 6.0 leaks in my wife's rig, and started when basically brand new--a problem that plagues YEARS (and potentially millions) of LS engines. That is not a teething issue.

What leak are you talking about? I am an account manager for a truck manufacturer where we use GM Powertrain engines in some of our products. My main customer has almost 17,000 4.8 ad 6.0L engines from 2005 to 2012. Odd that “leaks” have never been anything to hit our warranty radar and not something the customer has ever mentioned but yet you say this “leak” affects millions of LS engines??? Also odd that none of our GM dealers have ever mentioned a problematic "leak" nor is there anything to be found in the way of bulletins and PI's in GM's service system. Please tell me more.. What is leaking, where does it leak, what has the dealer done to try to correct it? Need more details to back up your odd sounding claim daveyboy. Sounds like you may also need a different dealer working in it too.

Do they just put a ton of numbers in a bag and blindly pick one? Does the marketing team choose it? 12,000 pounds? Yeah, good luck with that.

Yeah, I honestly think that is what they do. Just throw a number on the wall and make sure it is higher than the other guys claims. Toyota is the only manufacturer that is actually complying with the SAE J2807 tow rating standard. Sooner or later the other guys will need to comply too (they are already 2 years late) but they are all dragging their feet as their "claimed" towing ratings will go down pretty significantly where people will be wondering why a truck could tow 11,200 lbs one year then only 9,500 lbs the next. This will be interesting to see how this all plays out. Kudo's to Toyota for complying with the SAE J2807 standard.

 

[VanIsle_Greg]

Good read on the new SAE rating...

http://www.automobilemag.com/features/news/0912_sae_tow_ratings_finally_pass_sniff_test/viewall.html

 

[Kaisen]

Toyota is the only manufacturer that is actually complying with the SAE J2807 tow rating standard. Sooner or later the other guys will need to comply too (they are already 2 years late) but they are all dragging their feet as their "claimed" towing ratings will go down pretty significantly where people will be wondering why a truck could tow 11,200 lbs one year then only 9,500 lbs the next. This will be interesting to see how this all plays out. Kudo's to Toyota for complying with the SAE J2807 standard.

We already know how it played out for GM. ALL manufacturers were supposed to comply with the J2807 standard starting with the 2013 model year. So GM revealed all new ratings at the beginning of the year and published its new tow ratings. When Ford did not adhere to J2807 when they released their 2013 specs, GM was furious and adjusted their own tow ratings back to the previous 2012 levels.

But don't think they would go from "11,200 lbs one year then only 9,500 lbs the next". When the 2013 J2807 ratings were announced, the impact was only 200-300 pounds (150 of which was an extra passenger, per J2807). A 2012 half ton 6.2-liter V-8, 3.73:1 axle ratio and the Max Trailering package was rated to tow 10,700 lbs in 2012. According to the 2013 order guide, the official J2807 rating "dropped" to 10,500 lbs. J2807 won't affect half ton tow ratings very much.

Article on GM's J2807 compliance (and adjustments) at the start of the 2013 model year:
http://news.pickuptrucks.com/2012/05/tow-ratings-adjust-for-2013-gm-pickups.html

 

[Buliwyf]

Even J9207 overestimates IMO. But it's a start. An uneducated customer with a camper or Rv is still pretty much screwed.
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They're testing:
"The engine's power and torque characteristics
The powertrain's cooling capacity
The durability of the powertrain and chassis
Handling characteristics during cornering and braking maneuvers
The structural characteristics of the vehicle's hitch attachment area "
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The handling characteristics test is the only one that concerns me. That's the big difference between 1ton and 1/2 ton towing. Hopefully the Ford Econoline 350 gets a big fat ZERO for towing capacity after that test. Whatever the E350 gets rated at is what I'll use to quantify all of their other tests/reviews. If they rate it to be able to tow 10000 safely. Then I'll know to discount all of their tests by about 3000 pounds at least.

 

[daveyboy]

What leak are you talking about? I am an account manager for a truck manufacturer where we use GM Powertrain engines in some of our products. My main customer has almost 17,000 4.8 ad 6.0L engines from 2005 to 2012. Odd that “leaks” have never been anything to hit our warranty radar and not something the customer has ever mentioned but yet you say this “leak” affects millions of LS engines??? Also odd that none of our GM dealers have ever mentioned a problematic "leak" nor is there anything to be found in the way of bulletins and PI's in GM's service system. Please tell me more.. What is leaking, where does it leak, what has the dealer done to try to correct it? Need more details to back up your odd sounding claim daveyboy. Sounds like you may also need a different dealer working in it too.



Yeah, I honestly think that is what they do. Just throw a number on the wall and make sure it is higher than the other guys claims. Toyota is the only manufacturer that is actually complying with the SAE J2807 tow rating standard. Sooner or later the other guys will need to comply too (they are already 2 years late) but they are all dragging their feet as their "claimed" towing ratings will go down pretty significantly where people will be wondering why a truck could tow 11,200 lbs one year then only 9,500 lbs the next. This will be interesting to see how this all plays out. Kudo's to Toyota for complying with the SAE J2807 standard.

Common knowledge and there have been discussions about it on numerous forums:

05-06-01-034J:Engine Oil Leak at Rear Cover Assembly Area
(Engine Block Porosity RTV Repair Procedure) - (Nov 12, 2009)

Models: 2004-2007 Buick Rainier
2008-2009 Buick LaCrosse Super, Allure Super (Canada Only)
2005-2010 Cadillac CTS-V
2007-2010 Cadillac Escalade, Escalade ESV, Escalade EXT
2003-2009 Chevrolet TrailBlazer
2003-2010 Chevrolet Corvette
2004-2006 Chevrolet SSR
2005-2010 Chevrolet Silverado, Silverado SS
2006-2007 Chevrolet Monte Carlo SS
2006-2009 Chevrolet TrailBlazer SS, Impala SS
2007-2010 Chevrolet Avalanche, Suburban, Tahoe
2009-2010 Chevrolet Colorado Pickup
2010 Chevrolet Camaro
2003-2009 GMC Envoy
2003-2010 GMC Sierra
2004-2005 GMC Envoy XUV
2007-2010 GMC Yukon XL, Yukon Denali, Yukon XL Denali
2009-2010 GMC Canyon
2004-2006 Pontiac GTO
2005-2008 Pontiac Grand Prix GXP
2008-2009 Pontiac G8 GT
2009 Pontiac G8 GXP
2005-2009 Saab 9-7X 5.3i
2008-2009 Saab 9-7X Aero
2003-2010 HUMMER H2
2006-2010 HUMMER H3
with 5.3L, 5.7L, 6.0L, 6.2L, 7.0L VORTEC™ GEN III or GEN IV V8 Engine (All Aluminum Block) (RPOs L33, LC9, LH6, LH8, LH9, LM4, LS4, LS1, LS6, L76, L77, LFA, LZ1, LS2, L92, L94, L99, L9H, LS3, LS9, LSA, LS7)

This bulletin is being revised to add RPOs and model years. Please discard Corporate Bulletin Number 05-06-01-034I (Section 06 -- Engine/Propulsion System).

 

[Buliwyf]

The gensets and fire pumps I service have a lot of GM 4.3L, 5.0L and 5.7L crate engines. We get a ton of warranty calls for oil leaking from the front of the engine and the rear main seal. What do I do? Wipe it up and surf the net for an hour or two. After about 200 hours of use they seal up and run fine. The rear main seal on many GM's leaks for a while when new. No big deal.

 

[Larry]

Common knowledge and there have been discussions about it on numerous forums:

05-06-01-034J:Engine Oil Leak at Rear Cover Assembly Area
(Engine Block Porosity RTV Repair Procedure) - (Nov 12, 2009).

Interesting, but I still never heard of ANY oil leak issues with Gen III engines however the concern that you bring up only affects aluminum blocks. Must be common knowledge on car forums.

Condition

Some customers may comment on an engine oil leak.

Cause

Upon initial diagnosis, it may be determined that the leak is coming from the rear cover gasket. This condition may be caused by engine block porosity on the sealing surface. This issue pertains to aluminum block applications only.

Then it shows a picture of a couple pictures of minor pits in the sealing surface. Doesn’t look like a big deal nor a difficult fix. The fact this concern is only related to some aluminum block engines would explain why this problem that affects MILLIONS

of LS engine hasn’t hit my radar as the engines used in the commercial trucks are iron blocks. If you still have an oil leak related to this HUGE concern I still think you need to find a different dealer to fix it.

 

[Kaisen]

To be fair, all 6.2Ls -- trucks or cars -- have aluminum blocks

All Gen V smallblocks are aluminum, all trucks too

 

[Larry]

To be fair, all 6.2Ls -- trucks or cars -- have aluminum blocks

All Gen V smallblocks are aluminum, all trucks too

Yep, that is correct all 6.2s are aluminum regardless if car or truck. The entire line up of Ecotec3 Gen V engines has not been launched yet but the ones available now are indeed aluminum but there are cast iron blocks coming. Oh, my……I hope they don't leak oil!

This thread is starting to sound like a ASE test. Technician A says.....Technician B says.... who is correct? A, B, Neither or Both

 

[Kaisen]

http://www.autoblog.com/2013/10/02/gm-62l-ecotec-v8-21-mpg-epa/

"The 2014 Chevrolet Silverado 1500 and High Country and the GMC Sierra and Sierra Denali 1500, available this fall, with a 6.2L V-8 produces an SAE-certified 420 horsepower (at 5600 rpm) and 460 lb-ft of torque (at 4100 rpm), the most power of any pickup engine and torque of any light duty pickup truck engine.

The 6.2L V-8 available for Silverado LTZ and High Country and Sierra SLT and Denali models also delivers class-leading maximum available trailering capacity of 12,000 pounds when properly equipped.

Along with power, now comes strong fuel economy as EPA estimates for the 6.2L V-8 EcoTec3 engine technology enable 2WD Sierra and Silverado models to achieve 15 mpg city and 14 mpg city for 4WD. EPA highway estimates are 21 mpg for 2WD versions, and 20 mpg for 4WD models.

"Power and towing capacity are fundamental capabilities for full-size pickups," said Jeff Luke, General Motors Executive Chief Engineer for full- and mid-size trucks. "The 2014 Silverado and Sierra deliver unmatched power and towing capability with a host of ingenious driver aids."

The optional Max Trailering Package is available on 2WD and 4WD V-8 crew cab and double cab models and includes:

-Trailering package with seven-pin and four-pin connector
-Enhanced cooling
-Automatic locking rear differential
-Heavy-duty 9.75-inch rear axle with 3.73 ratio
-Increased-capacity rear leaf springs
-Revised shock tuning for increased control
-Integrated trailer brake controller"

14 mpg city and 20 mpg highway from a 420hp / 460lb-ft crew cab 4x4 pickup.....impressive!

 

[Treybiz]

My 11 Silverado has the 6.2 and I love it.

 

[GDSQDCR]

I have an older GMC sierra with the 5.3. I have never had an engine leak, just the front axle at 160k miles and the rear diff around 140k (had maybe 30k miles on it).

I hope the new ones don't leak because I hope to buy a 2013/2014 in 2-3 years.

 

[zeke2.0]

GM has released some details about the 6.2L V8, optional in the 2014 Chevrolet and GMC pickups. The new motor produces 420 HP and 460 ft-lb. That's better than any competitor's engine in 2014. The Silverado and GMC "half-ton" trucks can tow an amazing 12,000 lb when equipped with the Max Tow package.

http://media.chevrolet.com/content/...ages/news/us/en/2013/Sep/0910-powertrain.html

Sorry to be a stick in the mud. Those hp/torque figures are where most people never push their engines to. Fords echoboost v6 creates 420 ilbs at 2k. Dodges new diesel is similar.