🏷️ Basic Information

Make:

Chevrolet

Model:

Colorado

Year:

2008

Generation:

First Generation (GMT355 platform)

Platform Code:

GMT355

👋 Introduction

Market Position:

Mid-size pickup truck, positioned as a versatile and capable vehicle for work and recreational use.

Competitive Analysis:

Competed against vehicles like the Toyota Tacoma, Nissan Frontier, Ford Ranger, and Dodge Dakota. Known for its robust platform and availability in various configurations.

Key Features:

Availability of multiple engine and transmission options, rear-wheel drive and four-wheel drive, choice of cab styles (extended cab, crew cab) and bed lengths.

📋 Manual Details

Coverage Areas:

All Models, Engines, Trim Levels, Transmission Types

Page Count:

Not Specified (Comprehensive)

Manual Type:

Workshop Service Repair Manual

Language:

English

Format:

Downloadable Digital File (PDF compatible)

📖 Manual Coverage

Engine Mechanical:

Engine assembly, cylinder head, block, crankshaft, pistons, connecting rods, lubrication, cooling, fuel, exhaust, timing systems, emission controls.

Engine Electrical:

Ignition system, starter motor, alternator, battery, engine control module (ECM), sensors, wiring diagrams.

Transmission:

Manual and automatic transmission overhaul, clutch, torque converter, shifting mechanisms, transmission control module (TCM).

Drivetrain:

Front and rear axle, drive shafts, universal joints, differentials, hubs, CV joints.

Suspension:

Front and rear suspension components, shock absorbers, struts, springs, control arms, ball joints, bushings.

Steering:

Steering column, steering gear, power steering system, tie rods, steering linkage.

Brakes:

Front and rear brake systems (disc and drum), ABS, parking brake, hydraulic system, brake lines, calipers, rotors, pads.

Electrical Body:

Exterior and interior lighting, power windows, door locks, mirrors, seats, instrument cluster, HVAC controls, body control module (BCM).

Body And Frame:

Body panel removal and installation, frame repair, door hinges, latches, exterior trim, bumpers.

HVAC:

Heating, ventilation, and air conditioning system diagnosis and repair, compressor, condenser, evaporator, refrigerant service.

Diagnostics Troubleshooting:

Diagnostic trouble codes (DTCs), symptom-based troubleshooting, diagnostic procedures for all major systems.

Maintenance:

Oil changes, fluid checks and replacements, filter replacements, tire rotation, brake inspections, battery checks.

Repair:

Component replacement (e.g., alternator, starter, water pump, fuel pump), engine rebuild, transmission overhaul, suspension component replacement, brake caliper/rotor replacement.

Troubleshooting:

Diagnosis of common drivability issues, electrical problems, starting and charging system faults, HVAC system malfunctions.

Diagnostics:

Diagnostic procedures using scan tools, multimeter usage, circuit testing, component testing.

Specifications:

Torque specifications for all fasteners, clearances, fluid capacities, diagnostic data.

Technical Depth:

Comprehensive, covering basic maintenance to complete engine and transmission rebuilds, including detailed diagnostic strategies and wiring diagrams.

📊 Manual Specifications

File Format:

PDF

Print Quality:

High Quality, Printable Pages

Binding Type:

Digital Download (Printable)

Paper Type:

N/A (Digital)

⚙️ Engine Specifications

Engine Options:

2.9L Vortec Inline-4 (LLR) and 3.7L Vortec Inline-5 (LLM)

2.9L Llr Horsepower:

185 hp @ 5600 rpm

2.9L Llr Torque:

203 lb-ft @ 2800 rpm

3.7L Llm Horsepower:

242 hp @ 5600 rpm

3.7L Llm Torque:

242 lb-ft @ 4600 rpm

Fuel Delivery:

Electronic Fuel Injection (EFI)

Engine Type:

Inline-4 and Inline-5, DOHC, 4 valves per cylinder

Cooling System Type:

Liquid-cooled

🔧 Transmission

Standard Transmission:

5-speed manual transmission

Optional Transmission:

4-speed automatic transmission (4L60-E / 4L70-E)

Transmission Features:

Available with electronic shift control and tow/haul mode on automatic transmissions.

📐 Dimensions

Wheelbase Options:

111.9 inches (regular cab short bed), 126.2 inches (crew cab/extended cab short bed and long bed)

Bed Length Options:

61.1 inches (short bed), 73.9 inches (long bed)

Curb Weight Range:

Approx. 3,800 - 4,500 lbs depending on configuration

Towing Capacity:

Up to 5,700 lbs (properly equipped)

🛡️ Safety Features

NHTSA Rollover Resistance:

4 out of 5 stars (for most configurations)

Active Safety Features:

Anti-lock Braking System (ABS), Traction Control System (TCS) available.

Passive Safety Features:

Front airbags, available side curtain airbags, three-point seat belts.

💡 Technology Features

Infotainment System:

Base models feature a standard AM/FM stereo with CD player. Optional upgrades include an auxiliary input and a premium audio system.

Driver Assistance Features:

Limited driver assistance features for this model year, primarily focused on ABS and TCS.

Connectivity Options:

Auxiliary audio input jack available on upgraded audio systems.

🔧 Maintenance

Oil Change Interval:

Every 7,500 miles or 12 months (synthetic blend or full synthetic oil recommended), or 5,000 miles under severe driving conditions.

Tire Rotation Interval:

Every 7,500 miles

Engine Air Filter Replacement:

Every 30,000 miles or as needed based on inspection.

Cabin Air Filter Replacement:

Every 15,000 miles or annually.

Engine Oil Type:

SAE 5W-30 (API Certified)

Engine Oil Capacity:

2.9L I4: 5.5 quarts (5.2 L); 3.7L I5: 6.0 quarts (5.7 L)

Transmission Fluid Type Auto:

Dexron VI Automatic Transmission Fluid

Transmission Fluid Type Manual:

GM Manual Transmission Fluid (GM P/N 12346190 or equivalent)

Coolant Type:

Dex-Cool Extended Life Antifreeze/Coolant (or equivalent orange silicate-free coolant)

Known Issues:

Some common issues reported include corrosion on the frame, premature wear of suspension components, potential for HVAC blower motor failure, and minor electrical gremlins. The manual will provide detailed troubleshooting for these and other potential problems.

📚 Vehicle History

Brand Heritage:

Chevrolet has a long history of producing reliable trucks and utility vehicles, dating back to the early 20th century.

Model Evolution:

The Colorado replaced the Chevrolet S-10 pickup truck. It was developed as a joint venture with Isuzu and shared its GMT355 platform with the Chevrolet TrailBlazer SUV and GMC Canyon.

Production Location:

Shreveport, Louisiana, USA; Wentzville, Missouri, USA (later models)

Production Years:

2004-2012 (First Generation)

🏆 Awards & Recognition

Recognitions:

While specific awards for the 2008 model might vary, the Colorado platform has been recognized for its capability and value in the mid-size truck segment.