Vehicle Segment:
Full-size SUV with a unique midgate feature, bridging the gap between a traditional SUV and a pickup truck.
Target Audience:
Families, individuals needing versatile cargo and passenger capacity, those who enjoy outdoor activities, and DIY mechanics.
Competitors:
Ford Expedition, Dodge Durango, Toyota Sequoia, Lincoln Navigator.
Unique Selling Proposition:
The innovative Midgate system, which allows the rear window and tailgate to fold down, effectively extending the cargo bed into the cabin, offering unparalleled versatility.
Key Features:
Full-size SUV utility, open-bed cargo capability via Midgate, robust construction, powerful V8 engine options, comfortable interior, available four-wheel drive.
Manual Advantage:
Provides detailed, factory-authorized repair and maintenance information, empowering owners to perform tasks themselves, saving money and ensuring proper vehicle upkeep.
Powertrain:
Engine mechanical, lubrication, cooling, fuel, exhaust, ignition, engine control systems (ECM/PCM), transmission (automatic), transfer case, drive axles.
Chassis:
Suspension (front and rear), steering, brakes (front and rear disc, ABS), wheels, tires.
Body And Frame:
Body structure, exterior panels, doors, glass, interior trim, Midgate system, bed (Composite Cargo Bed), bumpers, chassis frame.
Electrical:
Wiring diagrams, lighting, instrumentation, power distribution, starting and charging system, body control modules (BCM), comfort and convenience features, audio system, HVAC controls, power accessories (windows, locks, mirrors).
HVAC:
Heating, Ventilation, and Air Conditioning system (components, operation, diagnosis, service).
Maintenance:
Scheduled maintenance intervals, fluid changes (oil, coolant, transmission fluid, brake fluid, power steering fluid), filter replacements, lubrication points.
Diagnostics:
Troubleshooting charts, diagnostic trouble codes (DTCs) interpretation, symptom-based troubleshooting, component testing.
Repair:
Step-by-step repair procedures for all major systems, including engine overhaul, transmission overhaul, brake caliper replacement, suspension component replacement, steering rack replacement, electrical component diagnosis and repair.
Disassembly/Assembly:
Detailed instructions for component removal, inspection, and reinstallation, often with torque specifications.
Component Specifications:
Clearance specifications, tolerances, pressure readings, electrical resistance values.
Depth:
Comprehensive from basic maintenance to in-depth diagnostics and complete component overhauls. Includes factory-level repair procedures and specifications.
Searchability:
Searchable text content for quick information retrieval.
Printability:
Printable pages for offline reference or workshop use.
Image Resolution:
High resolution for clear diagrams, illustrations, and photographs.
Digital Format Benefit:
Instant access, portability across multiple devices (PC, tablet, smartphone).
Digital Format Benefit:
Environmentally friendly, no physical storage space required.
Engine Code And Description:
LM7 - 5.3L V8 (325 cu in) OHV 16V
Bore X Stroke:
3.78 in x 3.62 in (96 mm x 92 mm)
Horsepower:
285 hp @ 5200 rpm
Torque:
325 lb-ft @ 4000 rpm
Fuel Delivery:
Sequential Central Port Fuel Injection (SCPI) / Multi-Port Fuel Injection (MPFI)
Fuel Type:
Unleaded Regular 87 Octane
Ignition System:
Distributorless Ignition System (DIS) with individual coil-on-plug (COP) or coil-near-plug (CNP) configuration.
Engine Control Module:
PCM (Powertrain Control Module)
Type:
4-speed Automatic Transmission
Transmission Model:
4L60-E (Hydra-Matic)
Type:
Not applicable for the 1500 model with the 5.3L V8 in 2003.
Drive Modes:
Available with 2WD (RWD) or 4WD (full-time or part-time, depending on configuration).
Transfer Case:
Available with NP1 (2WD), NP8 (2-Speed Autotrac 4WD), or NVG246 (2-Speed Autotrac 4WD) depending on configuration.
Length:
Approximately 221.0 inches (5613 mm)
Width:
Approximately 79.8 inches (2027 mm)
Height:
Approximately 77.0 inches (1956 mm)
Wheelbase:
Approximately 130.0 inches (3302 mm)
Passenger Capacity:
Up to 6 passengers (with 3-row seating option)
Cargo Volume Behind First Row Midgate Open:
Approximately 138.9 cubic feet
Cargo Volume Behind Second Row Midgate Closed:
Approximately 46.0 cubic feet
Curb Weight:
Approximately 5,500 - 6,000 lbs (2495 - 2722 kg) depending on configuration
Max Gvw:
Approximately 7,200 lbs (3266 kg)
NHTSA Rollover Resistance:
3 out of 5 stars (Tumble risk assessment)
ABS:
Standard Four-wheel Anti-lock Braking System (ABS)
Traction Control:
Available StabiliTrak electronic stability control system.
Airbags:
Driver and front passenger airbags. Available side-impact airbags.
Seatbelts:
Three-point seatbelts for all occupants, front pretensioners.
Engine Oil Change:
Every 3,000-7,500 miles or 6 months, depending on driving conditions and oil type (consult manual for specific recommendations).
Transmission Fluid Change:
Every 30,000-100,000 miles, depending on driving conditions and fluid type (consult manual for specific recommendations).
Coolant Flush:
Every 30,000-150,000 miles or 2-5 years, depending on coolant type (Dex-Cool typically longer).
Spark Plug Replacement:
Approximately 100,000 miles for extended-life platinum or iridium plugs.
Engine Oil:
SAE 5W-30, API Certified (Dexos 1 Gen 2 or equivalent for modern use, consult manual for original spec).
Transmission Fluid:
Dexron-III or Dexron-VI Automatic Transmission Fluid (ATF).
Coolant:
GM Engine Coolant (P/N 12346317 or equivalent) or Dex-Cool (orange long-life).
Brake Fluid:
DOT 3 or DOT 4.
Common Issues:
Head gasket leaks (particularly on early 5.3L V8s), intake manifold gasket leaks, ABS sensor failures, fuel pump issues, catalytic converter failures, rear main seal leaks.
Brand History:
Chevrolet, a division of General Motors (GM), has a long history of producing reliable trucks and SUVs known for their robust performance and value.
First Generation:
The Chevrolet Avalanche was introduced for the 2002 model year, based on the GMT800 platform shared with the Chevrolet Silverado and Suburban. The 2003 model represents the second year of its production.
Key Innovations:
The pioneering Midgate system was its defining feature, offering unmatched cargo flexibility in the SUV segment.
Production Location:
Fort Wayne, Indiana, USA
