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2003 Chevy Express - Specs
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Engines |
Vortec
4300
4.3L V6 (LU3)
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Vortec
4800
4.8L V8 (LR4)
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Vortec
5300
5.3L V8 (LM7)
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Vortec
6000
6.0L V8 (LQ4)
|
Type |
4.3-liter V-6
|
4.8-liter V8
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5.3-liter V8
|
6.0-liter V8
|
Displacement
(cu in / cc) |
262 / 4293
|
294 / 4807
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327 / 5328
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366 / 5998
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Bore & stroke (in / mm) |
4.00 x 3.48 /
101.6 x 88
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3.78 x 3.62 /
96 x 83
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3.78 x 3.27 /
96 x 92
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4.00 x 3.62 /
101.6 x 92
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Block material |
cast iron
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cast iron
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cast iron
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cast iron
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Cylinder head material |
cast iron
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cast iron
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cast iron
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cast iron
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Valvetrain |
OHV, 2 valves per cylinder
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OHV, 2 valves per cylinder
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OHV, 2 valves per cylinder
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OHV, 2 valves per cylinder
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Ignition system |
composite distributor, platinum-tip
spark plugs, low-resistance spark plug wires
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composite distributor, platinum-tip
spark plugs, low-resistance spark plug wires
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electronic spark control, composite
distributor, platinum-tip spark plugs
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coil near plug, platinum-tip spark
plugs, low resistance spark plug wires
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Fuel delivery |
sequential fuel injection
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sequential fuel injection
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sequential fuel injection
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modified sequential fuel injection
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Compression ratio |
9.2:1
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9.5:1
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9.5:1
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9.4:1
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Horsepower
(hp / kw @ rpm) |
200 / 149 @ 4400
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270 / 201 @ 5200
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285 / 213 @ 5200
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300 / 224 @ 4400
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Torque
(lb-ft / Nm @ rpm) |
250 / 339 @ 2800
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285 / 386 @ 4,000
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325 / 441 @ 4,000
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360 / 488 @ 4,000
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Recommended unleaded fuel |
87 octane
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87 octane
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87 octane
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87 octane
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Maximum engine speed (rpm) |
5600
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5600
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5600
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5000
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Emissions controls |
three-way catalytic converter,
exhaust gas recirculation, positive crankcase ventilation,
evaporative collection system
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three-way catalytic converter,
exhaust gas recirculation, positive crankcase ventilation,
evaporative collection system
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three-way catalytic converter,
exhaust gas recirculation, positive crankcase ventilation,
evaporative collection system
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three-way catalytic converter,
exhaust gas recirculation, positive crankcase ventilation,
evaporative collection system
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Estimated
fuel economy (mpg city / hwy / combined) |
Cargo |
15 / 18 / 16
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15 / 19 / 17
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14 / 17 / 15
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Not available
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Passenger |
14 / 18 / 16
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14 / 18 / 16
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13 / 17 / 15
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Not available
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Transmissions |
Hydra-Matic
4L60-E
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Hydra-Matic
4L80-E
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Type |
4-speed electronic automatic with
overdrive and torque converter
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4-speed heavy-duty electronic
automatic with overdrive and torque converter
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Gear ratios (:1) |
1st |
3.06
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2.48
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2nd |
1.63
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1.48
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3rd |
1.00
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1.00
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4th |
0.70
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0.75
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Reverse |
2.29
|
2.08
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Final drive ratio |
3.42:1 std. with 4.3-liter,
5.3-liter on 1500 Series |
3.73:1 std. with 4.3-liter
on 2500 Series; opt. with 5.3-liter on 1500 Series
and std. with 5.3-liter on 2500 Series; std. with
4.8-liter on 2500 Series and some 6.0-liter models |
4.10:1 opt. with 4.8-liter
on 2500 Series and std. on 3500 Series; std. or opt.
with 6.0-liter, depending on the model |
Chassis/Suspension |
G1500
|
G2500
(135-, 155-in WB)
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G3500
(135-, 155-in WB)
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Front |
independent short/long arm (SLA)
coil springs, 33mm stabilizer bar
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independent short/long arm (SLA)
coil springs, 35mm stabilizer bar
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independent short/long arm (SLA)
coil springs, 35mm stabilizer bar
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Rear |
two-stage, semi-elliptic multileaf
springs and semifloating rear axle
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two-stage, semi-elliptic multileaf
springs and semifloating rear axle (depending on
the GVW)
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two-stage, semi-elliptic multileaf
springs and semifloating rear axle
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Steering type
(all models) |
power, rack and pinion integral
power integral power
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Steering ratio |
17.3:1
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17.2:1
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17.2:1
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Steering wheel turns,
lock-to-lock |
3
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3
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3
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Turning
circle, curb-to-curb (ft / m) |
135-in WB |
48.6 / 14.8
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48.6 / 14.8
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48.6 / 14.8
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155-in WB |
-
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54.5 / 16.6
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54.5 / 16.6
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Brakes |
6,200-7,300
lb GVW
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7,300
lb
GVW
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8,600
lb
GVW
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9,600
lb
GVW
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12,300
lb
GVW
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Type (all models) |
HydroBoost 4-wheel-disc, 4-wheel
ABS with Dynamic Rear Proportioning
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Rotor diameter x thick (in
/ mm) |
Front |
12.01 x 1.14 / 305 x 29
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12.01 x 1.14 / 305 x 29
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12.80 x 1.50 / 325 x 38
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12.80 x 1.50 /
325 x 38
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12.80 x 1.50 / 325 x 38
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Rear |
13 x 1.14 /
330 x 29
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13 x 1.14 / 330 x 29
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13 x 1.14 /
330 x 29
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13 x 1.14 /
330 x 29
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12.80 x 1.20 / 325 x 30
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Total Swept
Area (sq in / sq cm) |
Front |
213.6 / 1378
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213.6 / 1378
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245.5 / 1584
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245.5 / 158
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245.5 / 1584
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Rear |
236.5 / 1526
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236.5 / 1526
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236.5 / 1526
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236.5 / 1526
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235.1 / 1517
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Wheels/Tires |
G1500
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G2500
(135-, 155-in WB)
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G3500
(135-, 155-in WB)
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Wheel size & type |
15-inch steel standard brushed
chrome (standard) SLT
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16-inch steel standard
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16-inch steel standard
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Tires |
P235/75R15* all-season steel-belted
radials
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LT225/75R16E** all-season steel-belted
radials
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LT245/75R16E all-season steel-belted
radials
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*Standard on all G1500, except cargo
van with 6,100-lb GVWR, which has a standard P215/75R15
**Standard on all G2500, except cargo van with 7,300-lb
GVWR, which has a standard LT225/75R16D
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Exterior
Dimensions |
G1500
Regular
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G2500
Regular
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G2500
Extended
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G3500
Regular
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G3500
Extended
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Wheelbase
(in / mm) |
135 / 3429
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135 / 3429
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155 / 3937
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135 / 3429
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155 / 3937
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Overall length
(in / mm) |
224.1 / 5692
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224.1 / 5692
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155 / 3937
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224.1 / 5692
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155 / 3937
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Overall width
(in / mm) |
79.4 / 2016
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79.4 / 2016
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79.4 / 2016
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79.4 / 2016
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155 / 3937
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Overall height
(in / mm) |
81.6 / 2072
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82 / 2082
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82 / 2082
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82 / 2082
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82 / 2082
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Track (in
/ mm) |
Front |
67.8 / 1721
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67.8 / 1721
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67.8 / 1721
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67.8 / 1721
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67.8 / 1721
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Rear |
67.8 / 1721
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67.8 / 1721
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67.8 / 1721
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67.8 / 1721
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67.8 / 1721
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Min. ground
clearance (in / mm) |
Front |
7.6 / 193
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8.2 / 208
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8.1 / 206
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8.7 / 221
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8.7 / 221
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Rear |
7.2 / 183
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8 / 203
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8 / 203
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8.5 / 216
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8.5 / 216
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Ground
to top of rear load floor (in / mm) |
Passenger |
25.5 / 648
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27.2 / 690
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27.2 / 690
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27.8 / 707
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27.8 / 707
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Cargo |
22.8 / 580
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25.1 / 637
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27.2 / 690
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27.8 / 707
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27.8 / 707
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Step-in
height (in / mm) |
Passenger,
front door |
17.3 / 439
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19 / 483
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19 / 483
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19.6 / 498
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19.6 / 498
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Passenger,
side door |
15.5 / 394
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18 / 457
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18 / 457
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19.5 / 495
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19.6 / 498
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Cargo, front door |
16.9 / 428
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18.8 / 478
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18.8 / 478
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20.5 / 521
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20.6 / 523
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Cargo, side door |
15.5 / 394
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18 / 457
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18 / 457
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19.5 / 495
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19.6 / 498
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Curb weight
(lbs / kg) |
Cargo |
4596 / 2085
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4711 / 2137
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4885 / 2216
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5021 / 2396
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19.6 / 498
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Passenger |
5015 / 2275
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5645 / 2561
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5985 / 2716
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5021 / 2396
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6122 / 2778
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Interior
Dimensions |
G1500
Regular
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G2500
Regular
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G2500
Extended
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G3500
Regular
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G3500
Extended
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Seating
capacity (std / opt) |
Passenger van |
8
|
12 / 8
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12
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12 / 8
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12 / 15
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Cargo van |
2 / 1
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2 / 1
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2 / 1
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2 / 1
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2 / 1
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Headroom
(in / mm): |
Front |
40.2 / 1021
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40.6 / 1032
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40.6 / 1032
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40.6 / 1032
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40.6 / 1032
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Middle (first row) |
38.5 / 978
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39.1 / 992
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39.1 / 992
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39.1 / 992
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39.1 / 992
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Middle
(second row) |
39.2 / 996
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39.2 / 996
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39.2 / 996
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39.2 / 996
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39.2 / 996
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Rear (12-pass) |
-
|
38.9 / 988
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38.9 / 988
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38.9 / 988
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38.9 / 988
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Rear (15-pass) |
-
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-
|
38.2 / 971
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-
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38.2 / 971
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Leg room
(in / mm): |
Front |
41.2 / 1047
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41.2 / 1047
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41.2 / 1047
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41.2 / 1047
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41.2 / 1047
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Middle (first row) |
38.6 / 980
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38.6 / 980
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38.6 / 980
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38.6 / 980
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38.6 / 980
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Middle
(second row) |
38.6 / 980
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38.6 / 980
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38.6 / 980
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38.6 / 980
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38.6 / 980
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Rear (12-pass) |
-
|
38.6 / 980
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38.6 / 980
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38.6 / 980
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38.6 / 980
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Rear (15-pass) |
-
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-
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36.3 / 921
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-
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36.3 / 921
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Shoulder
room (in / mm): |
Front |
68.8 / 1748
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68.8 / 1748
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68.8 / 1748
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68.8 / 1748
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68.8 / 1748
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Middle (first row) |
68.8 / 1748
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68.8 / 1748
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68.8 / 1748
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68.8 / 1748
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68.8 / 1748
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Middle
(second row) |
66.8 / 1697
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66.8 / 1697
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66.8 / 1697
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66.8 / 1697
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66.8 / 1697
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Rear (12-pass) |
-
|
57.2 / 1452
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57.2 / 1452
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57.2 / 1452
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57.2 / 1452
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Rear (15-pass) |
-
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-
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61.2 / 1555
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-
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61.2 / 1555
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Hip room
(in / mm): |
Front |
63.9 / 1652
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63.9 / 1652
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63.9 / 1652
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63.9 / 1652
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63.9 / 1652
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Middle (first row) |
67.6 / 1716
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67.6 / 1716
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67.6 / 1716
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67.6 / 1716
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67.6 / 1716
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Middle
(second row) |
56.1 / 1425
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56.1 / 1425
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55.6 / 1411
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56.1 / 1425
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55.6 / 1411
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Rear (12-pass) |
-
|
56.8 / 1443
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56.8 / 1443
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56.8 / 1443
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56.8 / 1443
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Rear (15-pass) |
-
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-
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61 / 1550
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-
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61 / 1550
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Cargo volume
(cu ft / liters): |
Behind front seat |
267.3 / 7569
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267.3 / 7569
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316.8 / 8970
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267.3 / 7569
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316.8 / 8970
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Width between wheelhousings
(in / mm) |
Cargo |
50.8 / 1290
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50.8 / 1290
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50.8 / 1290
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50.8 / 1290
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50.8 / 1290
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Passenger |
50 / 1271
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50 / 1271
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50 / 1271
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50 / 1271
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50 / 1271
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Load floor
length (in / mm) |
Behind 1st row seat, Cargo |
127.6 / 3240
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127.6 / 3240
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147.6 / 3748
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127.6 / 3240
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147.6 / 3748
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Behind 1st row seat, Passenger |
126.3 / 3208
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126.3 / 3208
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146.3 / 3716
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126.3 / 3208
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146.3 / 3716
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Behind 2nd row, Passenger |
89.4 / 2272
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89.4 / 2272
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109.4 / 2778
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89.4 / 2272
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109.4 / 2778
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Behind 3rd row, Passenger |
57.4 / 1457
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57.4 / 1457
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77.5 / 1969
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57.4 / 1457
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77.5 / 1969
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Behind 4th row, Passenger |
-
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-
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45.6 / 1159
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-
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45.6 / 1159
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Behind 5th row, Passenger |
-
|
-
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-
|
-
|
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Interior height (in / mm): |
Cargo |
54.8 / 1392
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54.8 / 1392
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54.8 / 1392
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54.8 / 1392
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54.8 / 1392
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Passenger |
51.8 / 1316
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51.8 / 1316
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51.8 / 1316
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51.8 / 1316
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51.8 / 1316
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Capacities |
G1500
Regular
|
G2500
Regular
|
G2500
Extended
|
G3500
Regular
|
G3500
Extended
|
GVWR (lbs
/ kg): |
Passenger van (standard) |
7100 / 2767
|
8600 / 3311
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8600 / 3311
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9500 / 4309
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9500 / 4309
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Cargo van (standard) |
6100 / 2767
|
7300 / 3311
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7300 / 3311
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9500 / 4309
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9500 / 4309
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Payload,
base (lbs / kg): |
Cargo van |
1504 / 682
|
2589 / 1174
|
2415 / 1095
|
4218 / 1913
|
4038 / 1831
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Passenger van |
2085 / 946
|
2955 / 1340
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2615 / 1186
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3720 / 1687
|
3378 / 1532
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Trailer
towing maximum (lbs / kg): |
Passenger |
6600 / 2905
|
8000 / 3628
|
7300 / 3312
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10000 / 4538
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10000 / 4538
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Cargo |
6100 / 2767
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8600 / 3901
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8400 / 3810
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10000 / 4538
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10000 / 4538
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Fuel tank
(gals / liters) |
31 / 117.3
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31 / 117.3
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31 / 117.3
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31 / 117.3
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31 / 117.3
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Maximum
tongue weight |
Trailer tongue weight should be
10-15 percent of the total loaded trailer weight,
up to 1,000 pounds. Weight-carrying hitch limit
on 4,000-lb trailer is 400-pound tongue weight.
Weight-distributing hitch and sway control required
for over 4,000-pound trailer weight.
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