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veHiCle speCifiCations
sieRRA Hd sPeCiFiCAtions
enGines
VORTEC 6.0L V-8 VVT ( L96 )
FUEL TYPE
Gasoline (FlexFuel)
CAPACITY
6.0 liters (364 cu. in.)
SAE NET HORSEPOWER @ RPM
360
5400 (<10,000-lb GVWR
@
322
4400 (>10,000-lb GVWR
@
SAE NET TORQUE @ RPM ( LB-FT )
380
4200
@
TRANSMISSIONS
Electronically controlled 6-speed heavy-duty automatic transmission
with overdrive, electronic engine grade braking and Tow/Haul mode
standard teCHniCal data
All models: Power 4-wheel antilock braking system
Series/Drive Type
2WD
BRAKES
14" dia. 4-wheel disc
STEERING
Power recirculating ball
FUEL TANK CAPACITY
36.0
(Approx. gals.: Standard/Long Box )
ALTERNATOR
125
( Amps )
maximum Gvwr
1
(Gross veHiCle weiGHt ratinG) vorteC 6.0l v-8/duramax
diesel 6.6l v-8 turBo
REGULAR CAB
2500HD
Standard Box
— /—
Long Box
10,000/9900
3500HD
SRW
10,700/11,400
DRW
13,400/13,025
maximum payload
All capacities in lbs
SELECT RATINGS
2500Hd
2wd / 4wd
Regular Cab Long Box
4212/3538
Crew Cab Standard Box
3347/3066
Denali Crew Cab Standard Box
3347/3066
Crew Cab Long Box
3247/3305
3500Hd
Regular Cab
SRW
4625/4609
DRW
7222/6876
Crew Cab
SRW Standard Box
4187/4190
SRW Long Box
4308/4266
Denali SRW
4187/4190
DRW
6245/5914
Denali DRW
6245/5914
DURAMAX DIESEL 6.6L V-8 TURBO ( LML)
Diesel (B20 biodiesel capable)
6.6 liters (402 cu. in.)
)
397
3000
1
@
1
)
765
1600
@
Electronically controlled Allison 1000 Series 6-speed automatic transmission
with overdrive, electronic engine grade braking and Tow/Haul mode
CarGo dimensions
2
4WD
Cargo Volume
14" dia. 4-wheel disc
Inside Width at Floor
Power recirculating ball
Box Length at Floor
36.0
exterior dimensions
125
Height
Overall Length
Standard Box
CREW CAB
Long Box
9500/10,000
wHeelBase
9500/10,000
11,000/11,600
Standard Box
13,025/13,025
Long Box
maximum trailerinG
Ball HitCH
3
4
Vortec 6.0L V-8 / Duramax Diesel 6.6L V-8 Turbo
2wd
4wd
13,000/13,000
13,000/13,000
13,000/13,000
13,000/13,000
13,000/13,000
13,000/13,000
13,000/13,000
13,000/13,000
13,000/—
13,000/13,000
14,100/—
13,800/16,000
13,000/13,000
13,000/13,000
13,000/13,000
13,000/13,000
13,000/13,000
13,000/13,000
13,500/16,500
13,200/18,000
13,500/16,500
13,200/18,000
STANDARD BOX
LONG BOX
60.7 cu. ft.
75.5 cu. ft.
62.46"
62.46" - 64.70"
78.9"
97.80"
REGULAR CAB
CREW CAB
77.50"-77.60"
78.10"-78.30"
—
240.20"
225.0"
259.10"
REGULAR CAB
CREW CAB
—
153.70"
133.7"
167.70"
maximum trailerinG
fiftH-wHeel or GooseneCk
4
Vortec 6.0L V-8 / Duramax Diesel 6.6L V-8 Turbo
2wd
4wd
14,700/17,800
14,400/17,500
14,200/17,400
13,900/15,800
14,200/17,400
13,900/15,800
14,100/16,700
13,800/14,700
14,500/—
14,200/17,400
14,200/—
13,800/23,100
14,000/17,200
13,700/17,000
13,900/17,300
13,600/16,800
14,000/17,200
13,700/17,000
13,500/22,800
13,200/22,500
13,500/22,800
13,200/22,500
front suspensions
independent torsion Bar–2500Hd/3500Hd
5
STANDARD FRONT AXLE CAPACITY
2WD
Regular Cab ( lbs )
4400/4400
Crew Cab ( lbs )
4400/4400
STANDARD FRONT SPRING CAPACITY
Regular Cab ( lbs )
4400/4400
Crew Cab ( lbs )
4400/4400
rear suspensions
semielliptiCal multileaf—
5
2500Hd/3500Hd-srw/3500Hd-drw
REAR AXLE CAPACITY
2WD
Regular Cab ( lbs )
6200 / 7050 / 9825
Crew Cab ( lbs )
6200 / 7050 / 9375
REAR SPRING CAPACITY
Regular Cab ( lbs )
6200 / 7050 / 9825
Crew Cab ( lbs )
6200 / 7050 / 9375
REAR AXLE CAPACITY
4WD
Regular Cab ( lbs )
6200 / 7050 / 9825
Crew Cab ( lbs )
6200 / 7050 / 9375
REAR SPRING CAPACITY
Regular Cab ( lbs )
6200 / 7050 / 9375
Crew Cab ( lbs )
6200 / 7050 / 9375
1
When properly equipped; includes weight of vehicle, passengers, cargo and equipment.
2
Cargo and load capacity limited by weight and distribution.
includes weight of driver, passengers, optional equipment and cargo.
weight ratings are calculated assuming a base vehicle, except for any option(s) necessary
to achieve the rating, plus driver. The weight of other optional equipment, passengers and
cargo will reduce the maximum trailer weight your vehicle can tow.
weight ratings are dependent on model, engine, transmission and GVWR combinations.
See your GMC dealer for details.
4WD
4400/4400
4800/4800
4400/4400
4800/4800
3
Maximum payload capacity
4
Maximum trailer
5
Capacities and
speCifiCations | 28
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