Driven: Prototype 2011 GMC Sierra 2500 Regular Cab Duramax Diesel

Driven: Prototype 2011 GMC Sierra 2500 Regular Cab Duramax Diesel

While testing the latest heavy-duty pickup trucks during our 2010 HD Shootout comparison, General Motors showed up with a prototype 2011 GMC Sierra 2500HD regular cab work truck with the new 6.6-liter Duramax V-8 diesel for some high-performance fun at Milan Dragway. We drove it.

A two-door GM heavy-duty pickup with an 8-foot-long cargo box and Duramax oil burner is a $8,395 upgrade over the standard truck. The base engine is a 6.0-liter V-8 gas engine with 360 horsepower and 380 pounds-feet of torque.

The Duramax is the most powerful diesel engine in the segment, rated at 397 hp and 765 pounds-feet of torque. Put that mill under a regular cab Sierra HD’s hood and, according to Brent Deep, GM full-size truck development engineer, the truck isn’t just a workhorse; it’s also a fuel-efficient hot rod.

“We call the truck ‘the rocket,’” Deep said. “When we were putting [the idea for it] together, we were trying to beat the best fuel economy and performance [numbers] in all of today’s full-size pickup trucks, both light- and heavy-duty.”

White Rocket Window Sticker Warning

Deep got close to meeting both of those objectives. He said that in “real world” testing – heavy-duty pickups aren’t required to carry EPA fuel economy labels – only the GMC Sierra 1500 Two-Mode Hybrid beats it for highway mileage, and the GMC Sierra Denali 1500 with the high-performance 403-hp, 417 pounds-feet 6.2-liter V-8 gas engine is faster in the quarter-mile.

To find out for ourselves how fast the prototype is, we got behind the wheel and timed it on the asphalt at Milan.

The fastest run of the day went to Johnny Fort, a senior financial analyst for Cars.com with the reflexes of a puma. Fort nailed the quarter-mile in only 14.79 seconds, beating journalists and truck engineers alike. He was the only person to break the 15-second barrier.

The best zero-to-60 time? According to Deep, it’s only 5.86 seconds. Not too shabby for a 6,522-pound work truck.

If you want a similar truck for your driveway or job site, it’s on sale now.

White Rocket Ready for Launch at Milan Dragway

Update 1: July 22, 07:33 am PT
Corrected statement that said the Duramax diesel is a new option for RCLB. The same configuration has been available in previous models. H/T to Alex for pointing that out (again).

Comments

@ Mike Levine. Thanks for the update on the mileage. I'll look forward to the comparisons.

@Mike

Thanks for fixing that.

@Mike, any chance we can be required to use our forum login/username to post on here? Just to keep our identities on news comments.

The other Alex :)

Alex,

Actually,the Government makes more money off of oil than the oil companies !

Just wait..the government is against drilling ect..so good luck in the future with more engine options..Gas will sky rocket and car companies will go bust...Yep, electric cars are d.o.a look at the black/brown outs we have already,and the lefts are saying we currently use to much power,they say nobody should have a/c !!!...This world is nuts !

The auto companies are scared to have a 1/2 ton diesel...Some factors they are scared of right off the bat..higher production/sale cost,higher fuel cost for a diesel,strict regulations(government) higher rebuild/maint.costs than a gas engine.. Ask anyone who owns a Diesel and needs a rebuild ,very pricey !!

By the way Alex my Hemi Ram gets over 16 mpg !!

@Dodge - I didn't know Dodge made a regular cab SRT10. I've never seen one.
These diesel trucks just get better and better.
Anyone pining away for the "good old days" are going to miss out on some awesome machines.
With that being said - I can think of many old trucks that look much better than the current crop of trucks.

@Dodge,

My V10 F250 get's 8 mpg on a 8 inch lift and 38" Super Swampers. My 7.3L gets 12 mpg hauling 8000 lbs and 16-17 mpg unloaded.

Beat that? LOL!

@Frank - but, but, but - your V10 ISN'Ta watered down cast iron weak clone of the Viper motor. That alone means the Ram V10 is better than your V10. So what if the SRT10 can't tow anything. It's faster in the 1/4 mile. It can race you from gas station to gas station.


BWHAAAAHAHAAAA.

@Lou,

You got me there.

"@Mike, any chance we can be required to use our forum login/username to post on here? Just to keep our identities on news comments." - The other Alex

Don't overwhelm the poor guy. He is doing the best he can with the site.

@Alex

I've read about the 2.9L, it was supposed to be put in a Caddy but It was canceled (maybe it is still in Europe). WIth it's power numbers, I would take that over the 4.5 anyday.

@Frank, I can see the downside, our friend Bobby wouldn't be able to use so many different names.

I like it.

@dodge

Your Hemi Ram gets 16mpg? I would have expected better.

my 07 ranger gets 24 mpg around town with the a/c on and 29 hwy, cost me 1/3 the cost of any hd diesel brand newand its $50 dollars to change its oil. and since 90% of my driving is empty cargo like the rest of you i can not understand everybody argueing over which truck pulls best?

That is a nice looking truck!

Alex wrote :"How about in the 1500, offer the 2.9L V6 diesel with 250 HP/406 lb-ft (30-35 mpg) with an optional 4.5L Duramax with 310/520 (25-30 mpg)

2500 and 3500 offer the 4.5L Duramax and have the 6.6 optional

No this makes too much sense, you will have too many pickups getting over 16mpg! That would be ridiculous, the oil companies would be losing money."

As anti liberal as I feel that I am, I think as a country we are moving backwards. Half of the heavy duty truck owners own them to show off to their buddies as a conversation piece or to race on the highway as a feel good notion. Seems most on here could care less about them autos working less on the HP/Tq numbers and more on fuel economy. That would make too much sense. The arab oil sheiks are glittering with happiness over fools like the USA that has such large pickups. BTW, I own a supercrew 4x4, but I want a smaller, lighter fuel efficient truck with 4x4, and like the fools the US auto industry is, they are going to force me to attribute to the lining of the foriegn auto industry. Just sad. And...who cares what brand it is, just so it fits your taste.

QUOTE; Lou,

A single cab RAM SRT-10 runs high 12's in the 1/4 mile !!! 4 second range 0-60.. I know of a few good drivers who own these and they can get 12.70's..with spinning prone stock tires..1 now runs a 12.3 with a Computer upgrade..headers,exhaust..needs slicks to really improve !


My 2005 ,4 door SRT ran 13.30's all stock...and yes traction is a problem..no mods,nicely broken in..First run ever 3500 miles on the clock,I was getting 13.50's but tried not to spin to hurt the engine,walked it out a bit before tromping on it..I now have different exhaust,computer it runs high 12's ! With not so much traction on take off..It's like my Hemi Ram when its wet out ,traction wise,but on dry pavement (so ya get the drift)!

Also new Ram R/T HEMI's run high 13's right out of the box,singlecab ect..yes,I know lighter curb weight,but less h.p/torque..

Also a 2010 4 door Crew Cab Hemi Ram Heavy/Duty ran 15.4 @95 in the 1/4 a single cab should run in the 14's.

Yes,I would guess the single cab GMC should move,its got enough torque ! And h.p !

Wonder what axle ratio in the GMC !!

Remember Lou,the article says only 1 driver could make it run in the 14's ! I know with the SRT-10's are all over the map,just like old muscle cars some people know how to drive/control power/wheelspin/some are just average ! You have find the balance between wheel spin/acceleration..


A single cab RAM SRT-10 runs high 12's in the 1/4 mile !!! 4 second range 0-60.. I know of a few good drivers who own these and they can get 12.70's..with spinning prone stock tires..1 now runs a 12.3 with a Computer upgrade..headers,exhaust..needs slicks to really improve !


My 2005 ,4 door SRT ran 13.30's all stock...and yes traction is a problem..no mods,nicely broken in..First run ever 3500 miles on the clock,I was getting 13.50's but tried not to spin to hurt the engine,walked it out a bit before tromping on it..I now have different exhaust,computer it runs high 12's ! With not so much traction on take off..It's like my Hemi Ram when its wet out ,traction wise,but on dry pavement (so ya get the drift)!

Also new Ram R/T HEMI's run high 13's right out of the box,singlecab ect..yes,I know lighter curb weight,but less h.p/torque..

Also a 2010 4 door Crew Cab Hemi Ram Heavy/Duty ran 15.4 @95 in the 1/4 a single cab should run in the 14's.

Yes,I would guess the single cab GMC should move,its got enough torque ! And h.p !

Wonder what axle ratio in the GMC !!

Remember Lou,the article says only 1 driver could make it run in the 14's ! I know with the SRT-10's are all over the map,just like old muscle cars some people know how to drive/control power/wheelspin/some are just average ! You have find the balance between wheel spin/acceleration.
end quote

a tuned diesel is pretty tough to beat. you can make an AWFUL lot of power with a diesel.. that engine can be tuned to beat the SRT-10.

and since you were off topic :) my screen name says it all. My 5900 lb. crew max tundra outruns EVERY 5.7 Hemi that i have come up against. the only one i havent run is the challenger. I cannot say i've had it at the track yet but i will.
and if you like fast, you MUST include the Tundra with the TRD Supercharger on a RCSB. its 504 HP and 550lb. ft. under factory warranty and will outrun the SRT-10. check it out on youtube there are several video's of it happening.
the SRT-10 is still SUPER SLICK though.

Back on topic, I LOVE THE FACT THAT EVERYONE is involved with outdoing the other guy. As long as this trend continues EVERYONE will get to enjoy a better truck. Competition makes everyone better

OH, PS the steepest gear GM offers for the duramax is build code GT4, or 3.73.

@hemi lol - you have me mixed up with "Dodge" or at least that is his nom de guerre.

I've never owned one nor do I ever intend on owning one (SRT10).

Duramax power would beat a dodge challenger any day

RAM may not do so hot, Cummins has been dieing to turn the screws to the 6.7L I-6 but the limitations Chrysler puts on the drive train causes Cummins to keep the 6.7 de-tuned, every 6.7L was set at 375hp /735tq back in late 07' early 08' . . .

But due to RAM's transmissions they got de tuned to 350 /650 and 305 / 610 . . .

CEO of Cummins diesel corp said the 6.7 is more then capable of 450+hp in an article not that long ago, they are just waiting on Chrysler's new 8spd automatic to crank the power up.

Mike

i am so glad this internet thing works and your article really helped me.



The comments to this entry are closed.