DETROIT
CLEVELAND
PITTSBURGH
BALTIMORE
WASHINGTON, D.C.
RICHMOND
680
20 30
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2 0 1 1 D U R A M A X D I E S E L 6 . 6 V - 8 T U R B O
76 5 LB - FT @ 16 0 0R PM
39 7 HP @3 00 0 R P M
TO RQ UE (L B- F T )
HO RS EP O WE R (H P )
EN GI NE SP EE D ( RP M X 1 00 )
S T A R T S I N 3 . 0 S E C O N D S . AT - 4 0 º F.
A diesel that starts easily in Arctic-like weather? It’s all in a cold day’s
work for the Duramax Diesel 6.6L V-8 Turbo. With an advanced Direct-
Injection (DI) fuel system, the Duramax injectors pressurize fuel up to
30,000 psi. That helps to turn cold, heavy diesel fuel into an ultra-fine
mist that burns quickly and easily, to give you fast starts, quieter operation
and lower emissions than the previous model.
B 2 0 B I O D I E S E L F U E L C O M P A T I B L E
To help reduce carbon dioxide emissions, the Duramax Diesel 6.6L V-8 Turbo
can run on B20 biodiesel, a mixture of 20 percent biodiesel produced from
domestic renewable resources, and 80 percent petroleum diesel.
S M O O T H S H I F T S
W I T H E X C E P T I O N A L
C O N T R O L
The Allison 1000 Series
6-speed automatic—the
same make used in the
M1 tank—is built with
multiple features to help
the driver handle heavy
loads with confidence.
There’s range selection
mode to enhance control
and engine braking in
specific driving situations
and grade braking mode
that helps slow the
vehicle on long grades
by automatically
selecting a lower gear.
P R O V E N A N D
R E L I A B L E
The Duramax/Allison
powertrain has a proven
track record, with more
than 1.2 million sold
since 2000.
D U R A M A X D I E S E L 6 . 6 L V - 8 T U R B O + A L L I S O N 1 0 0 0 S E R I E S 6 - S P E E D A U T O M A T I C
F i g u r e 6 : 2 0 1 1 d u r a m a x d i e s e l 6 . 6 l v - 8 t u r b o
1
Based on GM testing.
2
Visit onstar.com for details and system limitations.
OFF-THE-CHART POWER. OFF-THE-MAP RANGE.
The available new Duramax Diesel 6.6L V-8 Turbo and Allison 1000 Series
6-speed automatic transmission are engineered to achieve a goal that most
assumed to be impossible: improving power and mileage, together. Advanced
diesel direct-injection technology and an adaptive transmission controller help
Duramax to run at peak efficiency, and provide you with a highway mileage
range of up to 680 highway miles.
1
F I G U R E 7 : I M P R O V E D F U E L E C O N O M Y
A M O N T H L Y C H E C K U P
F R O M O N S T A R
With available OnStar,
your Sierra HD can run
through a monthly
check of your engine,
transmission, antilock
brakes and more and
e-mail you the results.
2
You can also ask for an
OnStar Onboard Vehicle
Diagnostics check while
you’re driving.
STAND A RD 3 6 -G A LL ON (A PP R OX .) FU EL TANK
FO R U P T O 6 8 0 M I LE S H IG HWAY RA N GE W I TH
TH E D U R A MA X D IE S EL 6 . 6L V-8 TU RB O
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