• GMC Sierra HD
  • GMC Sierra HD
  • GMC Sierra HD

2014 GMC SIERRA HD

ENGINES

Vortec 6.0L V8 (L96 / LC8)
Displacement (cu in / cc) - 364 / 5967
Bore & stroke (in / mm) - 4.00 x 3.62 / 101.6 x 92
Block material - cast iron
Cylinder head material - cast aluminium
Valvetrain - overhead valve, two valves per cylinder, variable valve timing
Ignition system - coil-near-plug, platinum- tipped spark plugs, low-resistance spark plug wires
Fuel delivery - sequential fuel injection
Compression ratio - 9.6:1
Horsepower (hp / kW @ rpm) - 360 / 268 @ 5400  (L96 / LC8 w/ gas) - 301 / 225 @ 5000 (LC8 w/ CNG)
Torque (lb-ft / Nm @ rpm) - 380 / 515 @ 4200 (L96 / LC8 w/ gas) - 333 / 452 @ 4200 (LC8 w/ CNG)
Recommended fuel - regular unleaded (L96) - regular unleaded or CNG (LC8)
Maximum engine speed (rpm) - 6000
Emissions controls - three-way catalytic converter, positive crankcase ventilation, evaporative collection system

Duramax 6.6L Turbo Diesel V8 (LML)
Displacement (cu in / cc) - 403 / 6599
Bore & stroke (in / mm) - 4.05 x 3.89 / 103 x 99
Block material - cast iron
Cylinder head material - cast aluminium
Valvetrain - overhead valve, four valves per cylinder
Ignition system - compression, glow plug start aid
Fuel delivery - direct injection diesel with high pressure common rail
Compression ratio - 16.0:1
Horsepower (hp / kW @ rpm) - 397 / 296 @ 3000
Torque (lb-ft / Nm @ rpm) - 765 / 1037 @ 1600
Recommended fuel - diesel or B20
Maximum engine speed (rpm) - 3000
Emissions controls - cooled exhaust gas recirculation (EGR), EGR cooling-bypass system, diesel particulate filter system (DPF), selective catalyst reduction (SCR)


TRANSMISSIONS

Hydra-Matic 6L90 six-speed automatic (with Vortec 6.0L)
Gear ratios:
First - 4.03
Second - 2.36
Third - 1.53
Fourth - 1.15
Fifth - 0.85
Sixth - 0.67
Reverse - 3.06
Final drive ratio - 4.10 or 3.73

Allison 1000 six-speed automatic (with Duramax 6.6L)
Gear Ratios:
First - 3.10
Second - 1.81
Third - 1.41
Fourth - 1.00
Fifth - 0.71
Sixth - 0.61
Reverse - 4.49
Final drive ratio - 3.73


CHASSIS / SUSPENSION
Front - all models: std long- and short-arm independent front torsion bar suspension
Rear - semi-elliptic two-stage multi-leaf spring
Steering type - integral power-assisted recirculating ball
Steering ratio - 16.1
Steering wheel turns, lock-to-lock - 3.57


TURNING CIRCLE
Turning circle, curb-to-curb (ft / m):
Regular Cab, std. box - 44.9 / 13.7
Crew Cab, std. box - 50.5 / 15.4
Crew Cab, long box - 54.8 / 16.7


BRAKES
Type - power-assisted, Hydroboost brake-apply system, four-wheel disc, four-wheel ABS
Rotor diameter x thickness  (in / mm):
Front - 13.80 x 1.57 / 350 x 40
Rear - 14.17 x 1.34 / 360 x 34
Total swept area (sq in / sq cm):
Front - 277.6 / 1791
Rear - 282 / 1819


WHEELS / TYRES
Wheel size and type:
17x7.5-in steel
17x7.5-in chrome-clad steel
17x7.5-in machined aluminium
18x8.0-in steel
18x8.0-in polished aluminium
20x8.5-in polished aluminium
Tyre size:
LT245/75R17 all season blackwall
LT265/70R17 all terrain blackwall
LT265/70R18 all season blackwall
LT265/70R18 all terrain blackwall
LT265/60R20 all terrain blackwall


DIMENSIONS

EXTERIOR
Wheelbase (in / mm):
Regular Cab Long Box - 133.7 / 3369
Crew Cab Standard Box - 153.7 / 3904
Crew Cab Long Box - 167.7 / 4260
Overall length (in / mm):
Regular Cab Long Box - 225 / 5715
Crew Cab Standard Box - 240.2 / 6101
Crew Cab Long Box - 259.1 / 6581
Overall width (in / mm):
Regular Cab Long Box - 80 / 2032 
Crew Cab Standard Box - 80 / 2032
Crew Cab Long Box - 80 / 2032
Overall height (in / mm):
Regular Cab Long Box - 77.6 / 1971
Crew Cab Standard Box - 78.3 / 1958
Crew Cab Long Box - 78.1 / 1984
Track – front (in / mm):
Regular Cab Long Box - 68.8 / 1748
Crew Cab Standard Box - 68.8 / 1748
Crew Cab Long Box - 68.8 / 1748
Track – rear (in / mm):
Regular Cab Long Box - 67.3 / 1709
Crew Cab Standard Box - 67.3 / 1709
Crew Cab Long Box - 67.3 / 1709
Min. ground clearance – 2WD (in / mm):
Regular Cab Long Box - front: 9.8 / 249, rear: 9.1 / 231
Crew Cab Standard Box - front: 9.8 / 249, rear: 8.4 / 213
Crew Cab Long Box - front: 9.8 / 249, rear: 8.3 / 211
Min. ground clearance – 4WD (in / mm):
Regular Cab Long Box - front: 9.75 / 248, rear: 9.1 / 231
Crew Cab Standard Box - front: 9.75 / 248, rear: 8.2 / 208
Crew Cab Long Box - front: 9.75 / 248, rear: 8.2 / 208
Step-in height (in / mm):
Regular Cab Long Box - 26.3 / 668
Crew Cab Standard Box - 26 / 661
Crew Cab Long Box - 25.9 / 658


WEIGHT & PAYLOAD RATINGS

Regular cab, long box (2WD):
GVWR (lb / kg) - 6.0L: 10000 / 4536*, 6.6L: 9900 / 4491
Curb Weight (lb / kg) - 6.0L: 5788 / 2625*, 6.6L: 6469 / 2934
Payload (lb / kg) - 6.0L: 4212 / 1910*, 6.6L: 3431 / 1556
*with UB7 Performance Package

Regular cab, long box (4WD):
GVWR (lb / kg) - 6.0L: 9500 / 4309, 6.6L: 9900 / 4491
Curb Weight (lb / kg) - 6.0L: 5962 / 2704, 6.6L: 6821 / 3094
Payload (lb / kg) - 6.0L: 3538 / 1605, 6.6L: 3079 / 1396

Crew cab, std. box (2WD):
GVWR (lb / kg) - 6.0L: 9500 / 4309, 6.6L: 10000 / 4536
Curb Weight (lb / kg) - 6.0L: 6153 / 2791, 6.6L: 6963 / 3158
Payload (lb / kg) - 6.0L: 3347 / 1518, 6.6L: 3037 / 1377

Crew cab, std. box (4WD):
GVWR (lb / kg) - 6.0L: 9500 / 4309, 6.6L: 10000 / 4536
Curb Weight (lb / kg) - 6.0L: 6434 / 2918, 6.6L: 7294 / 3308
Payload (lb / kg) - 6.0L: 3066 / 1391, 6.6L: 2706 / 1227

Crew cab, long box (2WD):
GVWR (lb / kg) - 6.0L: 9500 / 4309, 6.6L: 10000 / 4536
Curb Weight (lb / kg) - 6.0L: 6253 / 2836, 6.6L: 7068 / 3206
Payload (lb / kg) - 6.0L: 3247 / 1473, 6.6L: 2932 / 1330

Crew cab, long box (4WD):
GVWR (lb / kg) - 6.0L: 9900 / 4490, 6.6L: 10000 / 4536
Curb Weight (lb / kg) - 6.0L: 6595 / 2991, 6.6L: 7448 / 3378
Payload (lb / kg) - 6.0L: 3305 / 1499, 6.6L: 2552 / 1157

Denali (2WD):
GVWR (lb / kg) - 6.0L: 9500 / 4309, 6.6L: 10000 / 4536
Curb Weight (lb / kg) - 6.0L: 6307 / 2860, 6.6L: 7129 / 3233
Payload (lb / kg) - 6.0L: 3193 / 1448, 6.6L: 2871 / 1302

Denali (4WD): 

GVWR (lb / kg) - 6.0L: 9500 / 4309, 6.6L: 10000 / 4536
Curb Weight (lb / kg) - 6.0L: 6601 / 2994, 6.6L: 7456 / 3382
Payload (lb / kg) - 6.0L: 2899 / 1315, 6.6L: 2545 / 1154


CARGO BOX
Cargo volume (cu ft / L):
Standard Box - 60.7 / 1718 
Long Box - 75.5 / 2138
Length at floor (in / mm):
Standard Box - 78.8 / 2003
Long Box - 97.8 / 2484
Width at floor (in / mm): 
Standard Box - 62.4 / 1586
Long Box - 62.4 / 1586
Tailgate width (in / mm):
Standard Box - 61.6 / 1564
Long Box - 61.6 / 1564
Width between wheel housings (in / mm):
Standard Box - 50.6 / 1286
Long Box - 50.6 / 1286
Inside height (in / mm):
Standard Box - 21 / 533
Long Box - 21 / 533


INTERIOR
Headroom (in / mm):
Regular Cab - 41.3 / 1049
Crew Cab - front: 41.3 / 1049, rear: 40.6 / 1031
Legroom (in / mm):
Regular Cab - 41.3 / 1049
Crew Cab - front: 41.3 / 1049, rear: 39 / 991
Shoulder room (in / mm):
Regular Cab - 65.2 / 1657
Crew Cab - front: 65.2 / 1657, rear: 65.2 / 1656
Hip room (in / mm):
Regular Cab - 60.3 / 1532
Crew Cab - front: 60.3 / 1532, rear: 65.5 / 1664


TRAILERING

Trailer towing maximum with ball hitch (lb / kg)

Regular cab, long box:
2WD w/ 6.0L (4.10 axle): 13000 / 5897
2WD w/ 6.6L (3.73 axle): 13000 / 5897
4WD w/ 6.0L (4.10 axle): 13000 / 5897
4WD w/ 6.6L (3.73 axle): 13000 / 5897

Crew cab, std. box:
2WD w/ 6.0L (4.10 axle): 13000 / 5897
2WD w/ 6.6L (3.73 axle): 13000 / 5897
4WD w/ 6.0L (4.10 axle): 13000 / 5897
4WD w/ 6.6L (3.73 axle): 13000 / 5897

Crew cab, long box:
2WD w/ 6.0L (4.10 axle): 13000 / 5897
2WD w/ 6.6L (3.73 axle): 13000 / 5897
4WD w/ 6.0L (4.10 axle): 13000 / 5897
4WD w/ 6.6L (3.73 axle): 13000 / 5897

Denali: 
2WD w/ 6.0L (4.10 axle): 13000 / 5897
2WD w/ 6.6L (3.73 axle): 13000 / 5897
4WD w/ 6.0L (4.10 axle): 13000 / 5897
4WD w/ 6.6L (3.73 axle): 13000 / 5897

Trailer towing maximum with fifth-wheel hitch (lb / kg)

Regular cab, long box:
2WD w/ 6.0L (4.10 axle): 14700 / 6668
2WD w/ 6.6L (3.73 axle): 17800 / 8074
4WD w/ 6.0L (4.10 axle): 14400 / 6531
4WD w/ 6.6L (3.73 axle): 17500 / 7938

Crew cab, std. box:
2WD w/ 6.0L (4.10 axle): 14200 / 6441
2WD w/ 6.6L (3.73 axle): 17400 / 7892
4WD w/ 6.0L (4.10 axle): 13900 / 6305
4WD w/ 6.6L (3.73 axle): 15800 / 7167

Crew cab, long box:
2WD w/ 6.0L (4.10 axle): 14100 / 6395
2WD w/ 6.6L (3.73 axle): 16700 / 7575
4WD w/ 6.0L (4.10 axle): 13800 / 6260
4WD w/ 6.6L (3.73 axle): 14700 / 6668

Denali: 
2WD w/ 6.0L (4.10 axle): 14000 / 6350
2WD w/ 6.6L (3.73 axle): 16500 / 7484
4WD w/ 6.0L (4.10 axle): 13700 / 6214
4WD w/ 6.6L (3.73 axle): 14700 / 6668


CAPACITIES
Seating:
Regular Cab - 2 / 3
Crew Cab - 5 / 6
Fuel tank – 2WD and 4WD (gal / L): 
Regular Cab - 36 / 136
Crew Cab - 36 / 136

Specifications, options and details may be subject to change without notice, and availability may be dependent on model, body type or other requirements. Some features may not be available or compatible in Australia.
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