Fuel Economy

Engine	Estimated MPG city/hwy.1
Vortec 5300 V8
2WD	15/19
4x4	14/18
Vortec 6000 V82
2WD	—
4x4	—
VORTEC 8100 V82
2WD	—
4x4	—

¹  Official EPA estimates not yet available. Estimates based on GM testing.

²  The EPA does not rate the fuel economy of these engines.

Dimensions

NOTE: All dimensions shown are inches/millimeters unless otherwise noted.
Exterior	1/2-Ton	3/4-Ton
Wheelbase	130.0/3302	130.0/3302
Length	219.3/5570	219.3/5570
Height (with luggage rack)
2WD	73.6/1869	76.4/1941
4x4	75.4/1915	76.5/1943
Width	78.9/2004	79.8/2027
Bumper to front axle	37.0/940	37.0/940
Rear overhang	52.3/1327	52.3/1327
Ground to rear load floor
2WD	31.2/792	32.5/826
4x4	31.0/787	33.2/843

Ground clearance (min.)	1/2-Ton	3/4-Ton
2WD, front	9.8/249	8.1/206
2WD, rear	8.4/213	7.1/180
4x4, front	9.8/249	8.4/213
4x4, rear	8.4/213	7.1/180

Interior	Front	Middle	Rear
Headroom	40.7/1034	39.0/991	38.6/980
Legroom	41.3/1049	39.1/993	36.1/917
Shoulder room	65.2/1656	65.1/1654	64.4/1636
Hip room	61.4/1560	61.3/1557	49.2/1250

Cargo Area	1/2-Ton	3/4-Ton
Cargo volume1
At front seat (cu. ft./liters)	131.6/3727	131.6/3727
At rear seat (cu. ft./liters)	45.7/1294	45.7/1294
Load floor length
At front seat	104.6/2657	104.6/2657
At middle seat	69.6/1768	69.6/1768
At rear seat	36.1/917	36.1/917
Width between wheelhousings	49.2/1247	49.2/1247

¹  Cargo and load capacity limited by weight and distribution.

Capacities

	1/2-Ton	3/4-Ton
Seating	7–9	7–9
Fuel tank, approx. (gal./liters)	31/117	37/140
GVWR,1 standard (lbs./kg)
2WD	7000/3175	8600/3901
4x4	7200/3266	8600/3901
Payload,2 base (lbs./kg)
2WD	1732/786	2827/1282
4x4	1726/783	2527/1146
Curb weights, estimated (lbs./kg)
2WD	5268/2390	5773/2619
4x4	5474/2483	6073/2755

¹  Gross Vehicle Weight Rating (GVWR). When properly equipped; includes weight of vehicle, driver, passengers, optional equipment and cargo.

²  Maximum payload capacity includes weight of driver, passengers, optional equipment and cargo.

Trailering

Engine	Vortec 5300		Vortec 6000		Vortec 8100
	Trailer Capacity1 (max.)	Required Axle Ratio	Trailer Capacity1 (max.)	Required Axle Ratio	Trailer Capacity1 (max.)	Required Axle Ratio
1/2-ton 2WD (lbs.)	7400	3.42	—	—	—	—
1/2-ton 2WD (lbs.)	8400	4.10	—	—	—	—
1/2-ton 4x4 (lbs.)	7200	3.42	—	—	—	—
1/2-ton 4x4 (lbs.)	8200	4.10	—	—	—	—
3/4-ton 2WD (lbs.)	—	—	79002	3.73	10,600	3.73
3/4-ton 2WD (lbs.)	—	—	99002	4.10	12,000	4.10
3/4-ton 4x4 (lbs.)	—	—	76002	3.73	10,300	3.73
3/4-ton 4x4 (lbs.)	—	—	96002	4.10	12,000	4.10

¹  Maximum trailer 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. See your Chevy dealer for additional details.

²  The QUADRASTEER option (specially equipped Suburban three-quarter-ton models only) will reduce the maximum trailer weight rating by 200 lbs.

NOTE: For recreational towing restrictions and availability, consult the Owner’s Manual.

Braking

	1/2-Ton	1/2-Ton	3/4-Ton	3/4-Ton
	U.S. Standard	Metric	U.S. Standard	Metric
Type (power)	Hydro-Boost four-wheel disc
Antilock system	standard four-wheel
Front
Rotor size (dia. x thick.)	12 x 1.1 in.	305 x 28mm	12.80 x 1.50 in.	325 x 38mm
Swept area	213.4 sq. in.	1377 sq. cm	245.5 sq. in.	1583.8 sq. cm
Rear
Rotor size (dia. x thick.)	12.9 x 1.2 in.	328 x 30mm	13.00 x 1.4 in.	330 x 36mm
Swept area	223.7 sq. in.	1443.2 sq. cm	236.4 sq. in.	1525.2 sq. cm

Engine

	Vortec 5300 V8	Vortec 6000 V8	Vortec 8100 V8
RPO	L59	LQ4	L18
Displacement (cu. in./liters)	325/5.3	364/5.97	496/8.1
Bore x Stroke (in.)	3.78 x 3.62	4.00 x 3.62	4.25 x 4.37
Bore x Stroke (mm)	96.0 x 92.0	101.6 x 91.9	108.0 x 111.0
Compression ratio	9.5:1	9.4:1	9.1:1
Cylinder-block material	cast-iron	cast-iron	cast-iron
Cylinder-head material	cast-aluminum	cast-aluminum	cast-iron
Valvetrain configuration	OHV	OHV	OHV
Valves per cylinder	2	2	2
Ignition	direct	direct	direct
Lifters	hydraulic roller	hydraulic roller	hydraulic roller
Cam drive	chain	chain	chain
Coolant capacity (gallons/liters)	3.15/11.95	4.05/15.3	6.72/25.6
Oil capacity (quarts/liters)	6.0/5.7	6.0/5.7	6.0/5.7
Alternator rating (amps)	160	145	145
Battery (SAE rating, cca)	600	600	600
Recommended unleaded fuel	87 octane	87 octane	87 octane
Maximum engine speed (RPM)	5900	5600	5000
Horsepower/kW @ RPM	295/220 @ 5200	335/242 @ 5200	320/239 @ 4200
Torque (lb.-ft./N-m) @ RPM	335/452 @ 4000	375/493@ 4000	440/594 @ 3200

Steering

	1/2-Ton (2WD)	1/2-Ton (4x4)	3/4-Ton (2WD)	3/4-Ton (4x4)
Type (power)	recirculating ball	recirculating ball	recirculating ball	recirculating ball
Ratio	15.8:1	15.8:1	16.4:1	16.4:1
Turning diameter (curb-to-curb ft./m)	43.0/13.1	43.7/13.3	44.5/13.6	44.3/13.5
With available QUADRASTEER on specially equipped three-quarter-ton models only (curb-to-curb ft./m)	—	—	36.5/11.1	36.5/11.1

Transmission

	1/2-Ton	3/4-Ton
Type	Hydra-Matic four-speed automatic	Hydra-Matic, heavy-duty, four-speed automatic
RPO	M30 (4L60-E)	MT1 (4L80-E)
First gear	3.06	2.48
Second gear	1.63	1.48
Third gear	1.00	1.00
Fourth gear	0.70	0.75
Reverse gear	2.29	2.07
Fluid capacity (quarts/liters)	11.4/10.8	13.2/12.5
Case material	cast-aluminum	cast-aluminum
Converter size (in./mm)	11.8/300	12.2/310