🏷️ Basic Information

Make:

Chevrolet

Model:

Avalanche

Year:

2009

Generation Code:

GMT900

Platform Code:

GMT900

👋 Introduction

Positioning:

Vehicle-specific, professional-grade service manual mirroring dealership technician resources.

Differentiation:

Unlike generic repair guides, this manual provides exact vehicle specifications and procedures.

Accessibility:

Single, easy-to-use PDF format for convenient access and printing of needed sections.

User Benefit:

Empowers owners to perform maintenance and repairs, saving time and reducing reliance on mechanics.

📋 Manual Details

Coverage Scope:

All models and all repairs A-Z

Estimated Page Count:

N/A (Digital PDF)

Type:

Service and Repair Manual

Language:

English

Format:

PDF

📖 Manual Coverage

Engine Management:

Engine Control System, Fuel Service Specifications, Ignition Starting Charging, Emission Control, Intake Exhaust Cooling, Lube

Drivetrain:

Auto Transmission Clutch, Manual Transmission, Transfer Propeller Shaft, Drive Shaft, Differential, Axle Suspension

Chassis:

Tire & Wheel, Brake Control, Brake, Parking Brake, Steering Column, Power Steering

Electrical And Comfort:

Air Condition, Suppl Restraint System, Seat Belt, Engine Immobilizer, Cruise Control, Wiper & Washer, Door Lock, Meter Audio/Visual, Horn, Windshield/Glass Mirror, Instrument Panel, Seat, Engine Hood/ Door, Exterior & Interior, Electrical, Multiplex/ Can Communication

Diagnostic Procedures:

Detailed diagnosis and troubleshooting for all vehicle systems.

Repair Procedures:

Complete step-by-step repair instructions for mechanical, electrical, and body components.

Maintenance Procedures:

Comprehensive maintenance schedules and procedures.

Technical Data Provision:

Inclusion of wiring schematics, diagrams, and technical specifications.

Component Replacement:

Detailed instructions for replacing components such as alternators, starters, fuel pumps, suspension parts, brake components, body panels, and interior trim.

Depth:

Factory-level, detailed repair and diagnostic information for dealership technicians.

Electrical Schematics:

Comprehensive wiring diagrams covering all electrical systems, including power distribution, lighting, sensors, actuators, and comfort systems.

📊 Manual Specifications

File Type:

PDF

Printability:

Yes, all pages are printable.

Image Resolution:

High resolution for clear diagrams and illustrations, with blow-up capabilities.

Binding:

N/A (Digital PDF)

Paper Type:

N/A (Digital PDF)

Operating Systems:

Windows Vista (32/64-bit), XP, ME, 98, NT, 2000, and Mac compatible.

Required Software:

Adobe PDF Reader, Winzip (free online).

⚙️ Engine Specifications

Engine Type:

For the 2009 Chevrolet Avalanche, the primary engine option was the 5.3L V8 Vortec engine.

Engine Code:

Likely 'LH6' or 'LY5' designation, common for the 5.3L Vortec in this era.

Horsepower:

Approximately 310-320 hp at 5200 rpm (depending on specific configuration).

Torque:

Approximately 335-340 lb-ft at 4000 rpm (depending on specific configuration).

Fuel Delivery:

Sequential Fuel Injection (SFI)

Fuel Type:

Unleaded Gasoline

Displacement:

5.3 Liters (323 cubic inches)

Bore X Stroke:

3.78 in x 3.62 in (96 mm x 92 mm)

Compression Ratio:

9.5:1 to 10.0:1 (varies slightly by engine code).

Valve Train:

Overhead Valve (OHV), 2 valves per cylinder, with Active Fuel Management (AFM) system.

Firing Order:

1-8-4-3-6-5-7-2

🔧 Transmission

Transmission Type:

4-speed automatic transmission

Transmission Model:

4L60-E (likely)

Transmission Type:

N/A (4-speed automatic was standard across most models)

Overdrive:

Yes, overdrive gear for improved fuel economy.

Towing Support:

Integrated tow/haul mode for optimized transmission shift points when towing.

Transmission Fluid Type:

Dexron VI Automatic Transmission Fluid (ATF)

Transmission Fluid Capacity:

Approximately 9-10 quarts (dry fill), check manual for specific capacity.

📐 Dimensions

Wheelbase:

Approximately 130 inches (3302 mm)

Length:

Approximately 222.3 inches (5646 mm)

Width:

Approximately 79.8 inches (2027 mm)

Height:

Approximately 77.7 inches (1974 mm)

Curb Weight:

Varies by configuration, but typically in the range of 5,500 - 6,000 lbs.

Gross Vehicle Weight Rating Gvw:

Approximately 7,000 - 7,200 lbs.

Cargo Volume Bed:

Open bed configuration provides substantial cargo space, dimensions vary based on midgate position.

Cargo Volume Cabin:

Significant interior volume for passengers and cargo, especially with the midgate down.

🛡️ Safety Features

NHTSA Front Impact Driver:

Likely 5-star rating (based on GMT900 platform performance).

NHTSA Front Impact Passenger:

Likely 5-star rating (based on GMT900 platform performance).

NHTSA Side Impact Front Seat:

Likely 5-star rating (based on GMT900 platform performance).

NHTSA Side Impact Rear Seat:

Likely 4-star rating (based on GMT900 platform performance).

IIHS Front Crash Test:

Likely 'Good' rating (based on GMT900 platform performance).

ABS:

Standard Anti-lock Braking System (ABS)

Stabilitrak:

Standard StabiliTrak Electronic Stability Control

Airbags Front:

Standard front driver and passenger airbags.

Airbags Side:

Standard front and rear side curtain airbags (often referred to as Supplemental Restraint System - SRS).

Seatbelts:

All seating positions equipped with three-point seat belts; pretensioners for front seats.

💡 Technology Features

Audio System:

Available with various Bose premium audio systems, CD player, and MP3 playback capabilities.

Navigation:

Optional navigation system available.

Rear Parking Assist:

Optional rear parking assist system.

Backup Camera:

Optional rearview camera integrated into the infotainment system.

Bluetooth:

Available Bluetooth for hands-free calling and audio streaming.

Onstar:

Available OnStar system for telematics and emergency services.

🔧 Maintenance

Oil Change:

Typically every 7,500 miles or 6 months for synthetic oil, or refer to oil life monitoring system.

Tire Rotation:

Every 7,500 miles or as recommended by tire wear patterns.

Engine Air Filter:

Inspect every 15,000 miles, replace as needed or approximately every 30,000 miles.

Spark Plugs:

Recommended replacement around 100,000 miles for iridium-tipped plugs.

Engine Oil Type:

SAE 5W-30 Synthetic Motor Oil (meeting GM dexos1 or equivalent specification).

Engine Coolant:

GM P/N 12346290, Orange (or equivalent DEX-COOL compatible coolant).

Brake Fluid:

DOT 3 or DOT 4 Brake Fluid

Transmission Issues:

Potential for torque converter shudder or transmission fluid leaks; proper fluid level and condition are critical.

Active Fuel Management Afm:

AFM system lifter issues (lifter tick or oil consumption) can occur with higher mileage; AFM delete kits are available.

Interior Rattles:

Common in GM trucks of this era; interior trim panels can develop rattles.

📚 Vehicle History

Brand:

Chevrolet, a division of General Motors (GM), has a long history of producing trucks and versatile vehicles.

Generation:

The 2009 model year is part of the second generation (GMT900 platform) of the Chevrolet Avalanche, which debuted for the 2007 model year.

Key Innovation:

The Avalanche is unique for its 'Midgate' feature, allowing the rear cabin wall to fold down, extending the cargo bed into the passenger compartment.

Platform:

Built on the GMT900 platform, shared with the Chevrolet Silverado, Suburban, Tahoe, and Cadillac Escalade ESV.

Manufacturing Location:

Primarily assembled at GM's Silao Assembly plant in Mexico.

🏆 Awards & Recognition

Recognition Type:

While specific awards for the 2009 model are less documented, the Avalanche platform has been recognized for its utility and unique design.

Segment Competitors:

Competed with vehicles like the Ford Explorer Sport Trac and Honda Ridgeline, but offered a distinct combination of SUV cabin and truck bed functionality.