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2003 Chevy Trailblazer - Review
2003 Chevrolet Trailblazer EXT- Review
2003 Chevy Trailblazer - Photos
2003 Chevrolet Reviews
2003 Trailblazer - Price Quote

Visit Chevrolet for more information on the Chevrolet Trailblazer.

TrailBlazer - Engine Specs
TrailBlazer - Transmission Specs
TrailBlazer - Chassis / Suspension
TrailBlazer - Exterior Dimensions
TrailBlazer - Interior Dimensions
TrailBlazer - Capacities

Models	Engine		Transmission
Models	Vortec 4200 4.2L I6	Vortec 5300 5.3L V8	4-speed auto (Hydra-Matic 4L60-E)
LS	Standard	-	Standard
LT	Standard	-	Standard
LTZ	Standard	-	Standard
TrailBlazer EXT	Standard	Optional	Standard

Engine	Vortec 4200 4.2L I6 (LL8)	Vortec 5300 5.3L V8 (LM4)
Application	standard on TrailBlazer and TrailBlazer EXT	optional on TrailBlazer EXT
Type	4.2-liter inline six cylinder	5.3-liter V8
Displacement (cu in/cc)	256 / 4195	325 / 5328
Bore & stroke (in / mm)	3.66 x 4.01 / 93 x 102	3.78 x 3.27 / 96 x 92
Block material	cast aluminum	cast aluminum
Cylinder head material	cast aluminum	cast aluminum
Valvetrain	dual overhead camshafts, variable cam phasing – exhaust cams, 4 valves per cylinder	overhead valves, camshaft in block, 2 valves per cylinder
Ignition system	coil-on-plug, platinum-tip spark plugs	coil near plug
Fuel delivery	sequential fuel injection	sequential fuel injection
Compression ratio	10.1:1	9.5:1
Horsepower (hp / kw @ rpm)	275 / 205 @ 6000	290 / 216 @ 5200
Torque (lb-ft / Nm @ rpm)	275 / 373 @ 3600	325 / 441 @ 4000
Recommended fuel	unleaded regular	unleaded regular
Maximum engine speed (rpm)	6300	5900
Emissions controls	catalytic converter; NLEV	evaporative system, catalytic converter, exhaust gas recirculation, positive crankcase ventilation; NLEV
Estimated fuel economy (mpg city / hwy / combined)	TrailBlazer 2WD: 16 / 22 / 19	2WD:TBD; 4WD:TBD
	TrailBlazer 4WD: 15 / 21 / 18
	TrailBlazer EXT 2WD: 15/20/17
	TrailBlazer EXT 4WD: 15/20/17

Transmission	Hydra-Matic 4L60-E
Type	four-speed automatic transmission, rear-wheel drive, electronically controlled automatic overdrive with torque converter clutch
Gear ratios (:1)
1st	3.059
2nd	1.625
3rd	1.000
4th	0.696
Reverse	2.294
Final Drive Ratio	3.42:1; 3.73:1 and 4.10:1* are optional (*not optional on V8)

Chassis / Suspension	2003 Chevy Trailblazer
Front	independent, double A-arm, 46mm shocks, 44mm stabilizer
Rear	five-link solid axle, 36 mm shocks, 21mm stabilizer bar on 2WD, 24mm stabilizer bar on 4WD
Transfer case system	Autotrac (standard on 4WD)
Steering type	rack-and-pinion (hydraulically assisted)
Steering ratio	TrailBlazer: 20.4:1
Steering ratio	TrailBlazer EXT: 18.5:1
Steering wheel turns, lock-to-lock	TrailBlazer: 3.82
Steering wheel turns, lock-to-lock	TrailerBlazer EXT: 3.48
Turning circle, curb-to-curb (ft / m)	TrailBlazer: 36.4 / 11
Turning circle, curb-to-curb (ft / m)	TrailBlazer EXT: 41.3 / 12.6

Brakes		TrailBlazer	Trailblazer EXT
Type:		four-wheel vented disc with front aluminum dual piston calipers, standard four-wheel ABS; drum-in-hat parking brake	four-wheel vented disc with front aluminum dual piston calipers, standard four-wheel ABS; drum-in-hat parking brake
Rotor diameter x thickness (in/mm)	Front	12 x 1.14 / 305 x 29	12.8 x 1.14 / 325 x 29
Rotor diameter x thickness (in/mm)	Rear	12.8 x 0.78 / 325 x 20	12.8 x 0.78 / 325 x 20
Total swept area (sq in / sq cm)	Front	209.7 / 1353	227.8 / 1469
Total swept area (sq in / sq cm)	Rear	216.6 / 1397	216.6 / 1397

Wheels and Tires	TrailBlazer	TrailBlazer EXT
Wheel size & type	cast aluminum, 16-inch standard	cast aluminum, 17-inch
	17-inch optional
Tires	standard: P245/70R16;	P245/65R17
	optional: P245/65R17

Exterior Dimensions		TrailBlazer	Trailblazer EXT
Wheelbase (in / mm)		113 / 2869	129 / 3275
Overall length (in / mm)		191.8 / 4870	207.8 / 5276
Overall width (in / mm)		74.6 / 1894	74.7 / 1896.5
Overall height (in / mm)		71.9 / 1826 (without luggage rack)	75.5 / 1917 (without luggage rack)
Track (in / mm):	Front	63.1 / 1603	63.1 / 1603
	Rear	62.1 / 576	62.1 / 1576
Minimum ground clearance (in / mm)		8 / 203	8 / 203
Ground to top of load floor (in / mm)		32.1 / 817	31.9. / 810
Step-in height (in / mm)		18.1 / 459	19 / 482.5
Approach angle		33.9º	2WD: 34.6º / 4WD: 34.1º
Departure angle		23º	2WD: 23.1º / 4WD: 23.6º
Curb weight (lbs / kg)		2WD: 4432 / 2010	2WD w/Vortec 4200: 4787 / 2171
			4WD w/Vortec 4200: 4968 / 2253
		4WD: 4616 / 2094	2WD w/Vortec 5300: 4670 / 2118
			4WD w/Vortec 5300: N/A
Weight distribution (% front / rear)		2WD: 53 / 47	2WD w/Vortec 4200: 53 / 47
			4WD w/Vortec 4200: 54 / 46
		4WD: 54 / 46	2WD w/Vortec 5300: 56 / 44
			4WD w/Vortec 5300: TBD

Interior Dimensions	TrailBlazer	TrailBlazer EXT
Seating capacity	1st row: 2; 2nd row: 3 (total 5)	1st row: 2; 2nd row: 3; 3rd row: 2 (total 7)
Head room (in / mm)	1st row: 40.2 / 1021	1st row: 40.2 / 1021
	2nd row: 39.6 / 1006	2nd row: 39.6 / 1006
	-	3rd row: 38.5 / 978.4
Leg room (in / mm)	1st row: 43.1 / 1094	1st row: 43.1 / 1094
	2nd row: 37.1 / 942	2nd row: 37.5 / 951.5
	-	3rd row: 32.2 / 818
Shoulder room (in / mm)	1st row: 58.5 / 1485	1st row: 58.5 / 1485
	2nd row: 58.5 / 1485	2nd row: 58.4 / 1484.2
	-	3rd row: 58.3 / 1481.6
Hip room (in / mm)	1st row: 55.5 / 1410	1st row: 55.5 / 1410
	2nd row: 58.1 / 1476	2nd row: 58.4 / 1482.8
	-	3rd row: 45.9 / 1166.6
Cargo length floor (in / mm)	70 / 1778	85.5 / 2180
Cargo volume (cu ft / liters)	2nd row seat up: 41 / 1162	3rd row seat up: 22.3 / 631
	behind 1st row seat: 80.1 / 2268	2nd row seat up: 61.6 / 1745
	-	behind 1st row seat: 100.2 / 2839

Capacities	TrailBlazer	TrailBlazer EXT (Vortec 4200)	TrailBlazer EXT (Vortec 5300)
GVWR, standard (lbs / kg)	2WD: 5500 / 2494	2WD: 6200 / 2812	2WD: 6200 / 2812
GVWR, standard (lbs / kg)	4WD: 5750 / 2608	4WD: 6400 / 2903	4WD: 6400 / 2903
Payload, base (lbs / kg)	2WD: 1069 / 485	2WD: 1414 / 641	2WD: 1381 / 626
Payload, base (lbs / kg)	4WD: 1134 / 514	4WD: 1433 / 650	4WD: N/A
Trailer towing maximum (lbs / kg)	2WD: 6300 / 2858	2WD: 5900 / 2676	2WD: 7200 / 3265
Trailer towing maximum (lbs / kg)	4WD: 6200 / 2812	4WD: 5800 / 2630	4WD: 7000 / 3175
Maximum tongue weight (lbs / kg)	400 / 181 (without sway control)	400 / 181 (without sway control)	400 / 181 (without sway control)
Fuel tank (gals / liters)	22 / 83.3	25 / 96.1	25 / 96.1
Engine oil (qts / liters	7 / 6.6	7 / 6.6	7 / 6.6
Cooling system (qts / liters)	13.9 / 13.1	15.3 / 14.4	18 / 17

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