2003 Chevrolet / GMC Medium Duty Truck Specifications

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FOR RELEASE: March 6, 2002

2003 Chevrolet / GMC Medium Duty Truck Specifications

Vehicle(s):2003 Chevrolet Kodiak / GMC TopKick C4500 and C5500
GENERAL DATA
Location of final assembly: Flint, Michigan
Body style(s): 1-3 passenger regular cab; 1-6 passenger crew cab, Motorhome cutaway cab chassis, Commercial cutaway chassis cab and school bus chassis

EPA size class:
Class 4 (C4500) and Class 5 (C5500)
Trucks available in 16,000-, 18,000-, and 19,500-pound GVW ratings
Key Competitor: Ford SuperDuty
Drivetrain layout: Front-engine, rear-wheel drive
Airbags: Available driver- and passenger-side
POWERTRAINS
Engine type (C4500 and C5500):Vortec 8100 (L18) OHV gas V8, cast-iron block and heads
Bore x stroke (in./mm):4.25 x 4.37 / 107.95 x 111.0
Displacement (cu in / cc):496 / 8128
Compression ratio:9.1:1
Valve gear:OHV, 2 valves per cylinder
Fuel induction:
Sequential Fuel Injection (coil-near-plug)
SAE Horsepower (hp / kw @ rpm): 225 (LQR) or 325 (LRW) / 168 (LQR) or 242 (LRW) @ 3600 (LQR) / 4000 (LRW)
SAE Torque (lb-ft / Nm @ rpm): 350 (LQR) or 450 (LRW) / 475 (LQR) or 603 (LRW) @ 1200 (LQR) or 2800 (LRW)
Transmission type: ZF S6-650 (M50) 6-speed manual
Gear Ratios: 

1st

5.79

2nd

3.31

3rd

2.10

4th

1.31

5th

1.00

6th

0.76
Reverse5.23
Final drive (axle) ratio5.13
Max. engine speed (rpm):5500
Electrical: Single battery (600 CCA), 105-amp alternator
Recommended fuel:87 octane unleaded (minimum)
Engine type (C4500 and C5500):Duramax 6600 (LB7), OHV diesel V8,
cast-iron block, aluminum heads
Bore x stroke (in./mm): 4.06 x 3.90 / 103.0 x 99.0
Displacement (cu in / cc): 403 / 6599
Compression ratio: 17.5:1
Valve gear: OHV, 4 vales per cylinder
Fuel induction:Turbocharged, intercooled
Direct Injection via
high-pressure common rail
SAE Horsepower (hp / Kw @ rpm): 210 or 300 / 157 or 224 @ 3100
SAE Torque (lb-ft / Nm @ rpm):520 / 705 @ 1800
Transmission type:Allison 1000 (M74) 5-speed automatic
Gear Ratios: 

1st

3.10

2nd

1.81

3rd

1.41

4th

1.00

5th

0.71
Reverse 4.49
PTO (optional):6-bolt SAE
Final drive (axle) ratio:4.88 / 5.13
Max. engine speed (rpm):3250
Electrical:Dual 1110 series battery (1500 CCA), 105-amp alternator
Recommended fuel: No. 2 diesel
DIMENSIONS / CAPACITIES
(Representative Models)
Wheelbase (in.):128.0 (Regular Cab) 194.0 (Crew Cab)
Length (in.):205.5 (Regular Cab) 315.3 (Crew Cab)
Width (in.):95.8 (114.9 with mirrors)
Height (in.):90.6 (Regular Cab) 91.2 (Crew Cab)
Frame width (in.): 33.5 (C4500: 80,000 psi; C5500: 80,000 psi)
Track, f / r (in.):79.6 / 73.1
Head room f & r (in.):4.6 (minimum head clearance)
Leg room f / r (in.):39.9 / 39.4
Shoulder room f / r (in.):68.8 / 67.4
Mirrors, surface area (sq. in.):120 (outside-mounted mirrors only)
Ground clearance (in.): 8.4 (Regular Cab) 8.3 (Crew Cab)
Approach / departure angle (deg.):28.1 / 23.0 (Reg. Cab), 19.9 (Crew Cab)
Step-in height (in.):19.0
GVWR (lbs.): 16,000
GCWR (lbs.):24,000 (C4500); 26,000 (C5500)
Fuel capacity (gal.):40 (single, behind rear axle)
(opt 41 gallon dual tank: 25 midship and 16 aft of rear axle)
CHASSIS
Suspension, front:I-beam axle (6,000-lb. w/C4500, 6,000 or 7,000-lb. w/C5500), single-stage parabolic tapered leaf springs with 34mm square-tube stabilizer bar
35mm shock absorbers
Suspension, rear:Full floating axle (11,000-lb. w/C4500, 13,500-lb. w/C5500), multi-leaf springs with 35mm shock absorbers, 44.5mm stabilizer bar (standard with taper-leaf and optional with multi-leaf)
Steering type:ZF S-2 recirculating ball, integral power
Ratio:Variable, 16.1:1 to 19.6:1
Turning diameter (ft.):as low as 35.3 (Regular Cab) or as low as 44.6 (Crew Cab)
Brakes, front:hydraulic,15-in. discs, four-channel ABS, EBD
Brakes, rear:hydraulic,15-in. discs, four-channel ABS, EBD
(opt. brake-controlled Traction Control System)
Wheels: Hub-piloted steel, 8-hole, 19.5 in. x 6-in.
(opt. 19.5 x 6.75 size in steel and aluminum)
Tires:225/70R19.5F, with choice of Premium Highway, Traction or All-Season tread design
OVERALL WHEELBASE AND FRAME DIMENSIONS
 Wheelbase
(inches)
Cab-to- Axle (CA)
(inches)
Cab to End of Frame (CE)
(inches)
Conventional Cab Chassis
 1286095.9
 15284139.3
 176108177.6
 188120203.0
 194126209.0
 206138221.0
Crew Cab
 16960121.3
 19484146.3
 217 108 192.0
 229120204.0
 235126210.1
Motor Home Cutaway
 165.5100 182.9
 183.5118 217.4
 195.5 130245.9
 213.5148264.0
Commercial Cutaway
 165.5100 169.7
 183.5 118201.0
 195.5130213.0

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