🏷️ Basic Information

Make:

Chevrolet

Model:

Colorado

Model Years Covered:

2008, 2009, 2010

Generation Code:

GMT355

Platform:

GMT355

👋 Introduction

Vehicle Segment:

Mid-size Pickup Truck

Key Competitors:

Toyota Tacoma, Nissan Frontier, Ford Ranger (in relevant markets)

Vehicle Strengths:

Reputation for durability (especially with 3.7L and 5.3L V8 engines), capable off-road performance (especially Z71 trims), versatile utility for work and recreation.

Manual Value Proposition:

Empowers owners to perform maintenance and repairs themselves, saving money and time. Provides professional-level diagnostic and repair information.

📋 Manual Details

Geographic Coverage:

North America (USA, Canada), Australia, New Zealand (implied by customer base)

Estimated Page Count:

Varies, but potential for large file size up to 5GB suggests comprehensive coverage.

Manual Type:

Service Repair Manual / Workshop Manual / Factory Manual

Language:

English

Delivery Format:

Digital Download (PDF, ZIP, RAR, EXE)

📖 Manual Coverage

Engine Systems:

Engine mechanical, lubrication, cooling, fuel, ignition, emission control, exhaust, engine management systems (ECM/PCM), diagnostics

Transmission Systems:

Manual transmission, automatic transmission, clutch, driveline, axles, differentials, transfer case

Brake Systems:

Front and rear brakes (disc/drum configurations), ABS (Anti-lock Braking System), hydraulic system, parking brake

Suspension Steering:

Front suspension (independent torsion bar or coil spring), rear suspension (leaf spring), steering gear, power steering, wheel alignment

Electrical Systems:

Battery, charging system (alternator), starting system, lighting, instrumentation, body control modules (BCM), fuses, relays, wiring diagrams, diagnostics

Body Chassis:

Frame, body panels, doors, glass, interior trim, bumpers, exterior trim, corrosion protection

HVAC Systems:

Heating, Ventilation, and Air Conditioning (HVAC) system operation, components, and service

Safety Systems:

Airbags, seat belts, safety restraint systems

Maintenance Procedures:

Routine maintenance, oil changes, filter replacements, fluid checks and changes, tire rotation, brake inspections

Repair Procedures:

Step-by-step instructions for component removal, installation, overhaul, and repair of all major vehicle systems

Troubleshooting Diagnostics:

Diagnostic flowcharts, symptom analysis, fault code interpretation, electrical troubleshooting procedures

Rebuild Restoration:

Detailed instructions for rebuilding engines, transmissions, and other major components

Specifications Data:

Torque specifications, clearances, fluid capacities, electrical data, dimensional data

Depth Of Coverage:

Comprehensive, covering all aspects from basic maintenance to advanced diagnostics and complete overhauls. Suitable for professional technicians and DIY enthusiasts.

📊 Manual Specifications

File Types:

PDF, ZIP, RAR, EXE. The use of ZIP/RAR implies potential for multiple files or large compressed archives.

Printable:

Yes, the manual can be printed from any computer.

Binding Type:

N/A (Digital Download - No Physical Binding)

Paper Type:

N/A (Digital Download - No Physical Paper)

Searchable Text:

Likely searchable if PDF is text-based, but not explicitly stated. Manuals can be 'zipped' which might imply non-searchable formats within the archive.

Illustration Quality:

Illustrated with clear step-by-step instructions, zoomable illustrations, detailed component explosions, and exploded views.

⚙️ Engine Specifications

2 8L Lw5 Duramax Diesel:

Displacement: 2.8L (171 cu in); Configuration: Inline-4 Turbocharged Diesel; Horsepower: 181 hp @ 3400 rpm; Torque: 369 lb-ft @ 2000 rpm; Fuel System: Common Rail Direct Injection; Bore x Stroke: 98.5 mm x 95 mm; Compression Ratio: 16.0:1 (This engine was introduced later in the Colorado's lifecycle, but it's important to note its existence and potential for future models). **Note:** The 2.8L Duramax was not available for 2008-2010 model years. The engines for these years were the 2.9L I4 and 3.7L I5, and the 5.3L V8 for specific configurations/trims.

2 9L Llr Inline 4:

Displacement: 2.9L (177 cu in); Configuration: Inline-4; Horsepower: 185 hp @ 5600 rpm; Torque: 190 lb-ft @ 2800 rpm; Fuel System: Multi-Port Fuel Injection (MPFI); Bore x Stroke: 95.3 mm x 103.4 mm; Compression Ratio: 9.1:1

3 7L Lrt Inline 5:

Displacement: 3.7L (226 cu in); Configuration: Inline-5; Horsepower: 242 hp @ 5600 rpm; Torque: 242 lb-ft @ 2800 rpm; Fuel System: Multi-Port Fuel Injection (MPFI); Bore x Stroke: 95.3 mm x 103.4 mm; Compression Ratio: 9.1:1

5 3L Lh8 V8:

Displacement: 5.3L (323 cu in); Configuration: V8; Horsepower: 300 hp @ 5200 rpm; Torque: 320 lb-ft @ 4000 rpm; Fuel System: Active Fuel Management (AFM), Sequential Fuel Injection (SFI); Bore x Stroke: 96 mm x 92 mm; Compression Ratio: 9.1:1 (Available on Crew Cab 4WD LT models)

Tow Haul Mode:

Available on automatic transmissions, optimizes shift points for towing.

Fuel Type:

Regular Unleaded Gasoline (for I4 and I5), Premium Unleaded Gasoline recommended for optimal performance (for V8)

🔧 Transmission

Standard Transmission:

5-speed Manual (for 2.9L I4 and 3.7L I5)

Optional Transmission:

4-speed Automatic (MHY, 4L60-E derived) (for 2.9L I4, 3.7L I5, and 5.3L V8)

Transmission Features:

Lock-up torque converter, electronic control for automatic transmissions.

📐 Dimensions

Wheelbase:

Approximately 126.1 inches (3203 mm) for extended and crew cab models. Shorter wheelbase variants existed for standard cabs.

Length:

Varies by cab configuration (e.g., Extended Cab, Crew Cab) and bed length (e.g., 6.0 ft, 7.0 ft).

Width:

Approximately 71.3 inches (1811 mm) excluding mirrors.

Height:

Approximately 68.6 inches (1742 mm) for 2WD models, and higher for 4WD models.

Curb Weight:

Ranging from approximately 3,800 lbs to over 4,500 lbs depending on configuration, engine, and drivetrain.

Max Gvw:

Gross Vehicle Weight Rating (GVWR) varies by configuration, typically around 6,000 lbs.

Bed Lengths:

Standard 6'1" bed, Long 7'4" bed.

🛡️ Safety Features

NHTSA Front Crash Test:

Good (for driver and passenger) in IIHS testing, which often aligns with NHTSA ratings.

NHTSA Side Impact Test:

Acceptable or Good depending on specific test and year.

Traction Control:

Available, especially on 4WD models.

ABS:

Standard Anti-lock Braking System.

Airbags:

Front airbags for driver and passenger. Side curtain airbags available on some trims/configurations.

Seat Belts:

Three-point seat belts with pretensioners.

💡 Technology Features

Audio System Options:

Base AM/FM stereo with CD player, optional satellite radio, premium audio systems with more speakers available on higher trims.

Navigation:

Optional touch-screen navigation system available on higher trim levels.

Parking Assist:

Rear parking assist sensors were an option on some models.

Auxiliary Input:

Auxiliary audio input jack standard on most models for connecting external devices.

Bluetooth:

Bluetooth hands-free calling was an option on higher trim levels.

🔧 Maintenance

Oil Change Interval:

Typically 7,500 miles or 6 months, whichever comes first, with synthetic oil. Check manual for specific recommendations based on driving conditions.

Engine Coolant Change:

Initial change at 100,000 miles, then every 50,000 miles or 5 years.

Spark Plug Replacement:

I4/I5: Approximately 100,000 miles. V8: Approximately 100,000 miles. Specific plug types and gap settings are crucial and detailed in the manual.

Transmission Fluid Change:

Automatic: Approximately 50,000 miles for severe service, 100,000 miles for normal service. Manual: Inspect periodically, often recommended at 100,000 miles.

Engine Oil Specification:

SAE 5W-30 (for all engines). API certified viscosity grade, synthetic recommended.

Engine Oil Capacity:

2.9L I4: ~5.5 quarts (5.2L); 3.7L I5: ~6.0 quarts (5.7L); 5.3L V8: ~7.0 quarts (6.6L). All with filter change.

Automatic Transmission Fluid:

Dexron VI (or equivalent)

Manual Transmission Fluid:

API GL-4, SAE 75W-85 or 75W-90 (specifics vary by transmission type).

Coolant Type:

GM P/N 12346290 (Orange) or equivalent Dex-Cool compatible antifreeze/coolant. A 50/50 mix with distilled water is standard.

Frame Corrosion:

Potential for frame rust and corrosion in areas with heavy road salt usage, especially on older models. Requires inspection and potential treatment.

Heater Core Leaks:

Some reports of premature heater core failure, leading to coolant leaks inside the cabin.

Vibration Issues:

Some owners have reported driveline vibrations, particularly at certain speeds. This can be related to U-joints, driveshaft balance, or leaf spring issues.

Power Steering Pump:

Occasional reports of power steering pump noise or failure.

📚 Vehicle History

Chevrolet Truck Legacy:

Chevrolet has a long-standing reputation for building robust and reliable trucks, dating back to the Task Force and C/K series pickups.

Colorado Generation I:

The first generation (GMT355) of the Colorado was introduced for the 2004 model year, replacing the Chevrolet S-10. It was designed as a more modern and capable compact/mid-size pickup.

Colorado Refresh 2008:

The 2008 model year saw a significant mid-cycle refresh for the Colorado, including updated styling, improved interior, and the introduction of the 5.3L V8 engine option (LH8).

Manufacturing Locations:

Primary manufacturing location for North American models was Shreveport, Louisiana, USA. (Note: Production moved to Wentzville, Missouri for later generations).

🏆 Awards & Recognition

Motor Trend Truck Of The Year:

The Chevrolet Colorado (as part of the first generation) was named MotorTrend's Truck of the Year in 2004.

Kbb Best Resale Value:

While specific awards for 2008-2010 models might vary, the Colorado has generally been recognized for decent resale value within its segment.