🏷️ Basic Information Identification Make: Chevrolet Model: Colorado Model Alias: Chevy Colorado Body Style: Pickup Truck Generation First Generation Years: 2004-2012 Codes Platform Code: GMT355 👋 Introduction Market Position Segment: Compact/Mid-size Pickup Truck Competitive Analysis Competitors: Toyota Tacoma, Ford Ranger, Nissan Frontier, Dodge Dakota Key Features Attributes: Durable truck for work and recreation, available in various configurations (extended cab, crew cab, 2WD/4WD), reliable powertrain options. 📋 Manual Details Coverage Areas Covered Years: 2009, 2010, 2011, 2012 Models Covered: All models, engines, trims, and transmission types Page Count Estimated Page Count: Thousands (typical for comprehensive workshop manuals) Manual Type Type: Complete Workshop Service Repair Manual Language Language: English Format Format: PDF Download 📖 Manual Coverage Systems Covered Engine Mechanical: Engine assembly, cylinder head, block, crankshaft, pistons, connecting rods, lubrication system, cooling system, fuel system (mechanical components), exhaust system (mechanical components) Engine Electrical: Ignition system, starting system, charging system, fuel injection system (ECM control), sensors, actuators, powertrain control module (PCM) Transmission Manual: Clutch, gearbox assembly, shift mechanisms, hydraulic controls (if applicable) Transmission Automatic: Automatic transmission assembly, valve body, torque converter, electronic controls, hydraulic circuits Drivetrain: Driveshafts, axles, differentials, transfer case (if 4WD) Brakes: Brake system components (discs, calipers, pads, drums, shoes), hydraulic lines, master cylinder, power booster, ABS system, parking brake Suspension: Front suspension (independent), rear suspension (leaf spring solid axle), shocks, springs, control arms, ball joints, tie rods Steering: Steering column, steering gear (rack and pinion or recirculating ball), power steering system (pump, fluid, lines) Electrical Body: Lighting systems (headlights, taillights, interior), power windows, power locks, mirrors, wiper system, horn, fuses, relays, wiring diagrams Climate Control: HVAC system, air conditioning, heating, blower motor, controls, refrigerant system Chassis: Frame, body construction, exterior trim, doors, hood, tailgate, bumpers Procedures Included Maintenance: Scheduled maintenance, oil changes, fluid checks and changes, filter replacements, lubrication Diagnostics: Troubleshooting guides, symptom-based diagnostics, diagnostic trouble codes (DTCs), diagnostic procedures for all systems Repair Major Engine: Engine overhaul, cylinder head removal/installation, piston and rod service, crankshaft service, timing belt/chain replacement Repair Transmission: Transmission removal/installation, internal component repair, clutch replacement, torque converter replacement Repair Brakes: Brake pad/shoe replacement, caliper/wheel cylinder overhaul, brake line replacement, bleeding procedures, ABS component replacement Repair Suspension Steering: Component replacement (shocks, struts, ball joints, tie rods), alignment procedures, power steering system repair Repair Electrical: Component testing and replacement (starters, alternators, sensors), wiring harness repair, fuse/relay diagnosis, module programming Body Work: Door panel removal, interior trim, body panel alignment, glass replacement, component replacement (hinges, latches) Wiring Diagrams: Complete electrical system schematics Technical Depth Depth: Comprehensive: Covers basic maintenance to complete engine and transmission rebuilds, in-depth electrical diagnostics, and chassis repairs. 📊 Manual Specifications File Format Quality: High-quality PDF, typically searchable and zoomable Print Quality Printability: Printable by section or in full, intended for home/shop printing Binding Type Binding: N/A (Digital Download) Paper Type Paper Type: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine Engine Options: 2.9L Inline-4 (LLR), 3.7L V6 (LLM) Performance 2.9L Llr Hp: 185 hp @ 5600 rpm 2.9L Llr Torque: 190 lb-ft @ 2800 rpm 3.7L Llm Hp: 242 hp @ 5600 rpm 3.7L Llm Torque: 242 lb-ft @ 4600 rpm Fuel System Injection Type: Electronic Fuel Injection (EFI), Sequential Port Fuel Injection Fuel Type Fuel Type: Unleaded Gasoline 🔧 Transmission Standard Transmission Options: 5-speed Manual (M50), 4-speed Automatic (4L60-E) Optional Transmission Options: 4-speed Automatic (4L60-E) on some 2.9L models, 5-speed Automatic (5L40-E / 5L50-E) on 3.7L models Features Drive Types: Rear-Wheel Drive (RWD), Four-Wheel Drive (4WD) 📐 Dimensions Exterior Wheelbase Short Bed: 111.9 inches (approx.) Wheelbase Long Bed: 126.0 inches (approx.) Weights Curb Weight: Approximately 3,700 - 4,300 lbs depending on configuration 🛡️ Safety Features Ratings NHTSA Rollover Resistance: 3 Stars (for 2WD models, varies by configuration) Active Features Stability Control: Available StabiliTrak (Electronic Stability Control) Traction Control: Standard Traction Control Passive Features Airbags: Frontal airbags for driver and front passenger 💡 Technology Features Infotainment Audio System: AM/FM stereo with CD player, MP3 playback, auxiliary audio input, available satellite radio. Driver Assistance Features: ABS, Traction Control, available StabiliTrak. Back-up camera not commonly available in this generation. Connectivity Ports: Auxiliary audio input jack. 🔧 Maintenance Service Intervals Oil Change: Every 7,500 miles or 6 months (synthetic blend or full synthetic oil recommended) Air Filter Replacement: Every 30,000 miles or as needed based on inspection Cabin Air Filter Replacement: Every 15,000-30,000 miles or annually Transmission Fluid Change: Every 60,000-100,000 miles (check manual for specific recommendation based on usage) Fluid Specifications Engine Oil Type: SAE 5W-30 (API SN or higher) Coolant Type: GM Dex-Cool (Orange, extended life) Brake Fluid Type: DOT 3 Automatic Transmission Fluid Type: Dexron-VI Power Steering Fluid Type: GM Power Steering Fluid (or equivalent) Known Issues Common Problems: Check Engine Light due to various sensor issues, some transmission shifting concerns, potential for exhaust manifold cracks (especially on V8 models, though V8 was less common...