🏷️ Basic Information Identification Make: GMC Model: Sierra Year: 2004-2009 Model Generation: GMT900 (2007-2013) and continuation of GMT800 platform for 2004-2006 Codes Platform Code Early Years: GMT800 (Silverado-based platform) Platform Code Later Years: GMT900 (new platform for 2007+) 👋 Introduction Market Position Segment: Full-size pickup truck Target Audience: Individuals and businesses requiring a robust and capable workhorse or personal transportation. Competitive Analysis Key Competitors: Ford F-150, Dodge Ram 1500, Toyota Tundra, Nissan Titan. Key Features Vehicle Strengths: Durability, towing capacity, available V8 engines, comfortable ride for a truck, extensive customization options. Manual Benefits: Empowers owners to perform basic maintenance, understand vehicle features, and potentially save on repair costs. Provides step-by-step instructions and diagrams. 📋 Manual Details Coverage Areas Primary Coverage: Complete Owner's Manual Secondary Coverage: Maintenance, Specifications, Driving, Safety, Climate, Entertainment, Locks, Security, Lights, Driver Controls Page Count Estimated Page Count: Varies by specific model year and configuration, typically 300-500 pages for comprehensive manuals. Manual Type Type: Owner's Manual Language Language: English Format Format: PDF 📖 Manual Coverage Systems Covered Powertrain: Engine oil, fuel information, air filter, refill capacities, lubricant specifications (engine, transmission, differential). Chassis: Brake system, steering system, suspension system (general operation and fluid checks). Electrical: Instrument cluster indicators, lighting controls, battery maintenance, basic fuse information. Interior: Climate controls, entertainment systems, seating adjustments, seatbelt operation, lock and security features. Body: Door locks, windows, mirrors, basic cleaning procedures. Procedures Included Basic Maintenance: Checking engine oil, coolant, windshield washer fluid, tire pressure. Air filter replacement guidance. Owner Operations: Starting and operating the vehicle, using climate control, operating infotainment system, adjusting seats and mirrors, using safety restraints. Troubleshooting: Interpretation of dashboard warning lights and messages. Safety Information: Seat belt usage, child seat installation, airbag system warnings, reporting safety defects (U.S. only). Technical Depth Depth: Owner-level information for operation, basic checks, and routine maintenance. Does not include detailed diagnostic procedures or complete repair instructions typical of a service manual. 📊 Manual Specifications File Format Digital Format: PDF Searchable Text: Likely searchable if the PDF was created from a text-based source, but not guaranteed without direct inspection. Print Quality Printability: All pages are printable. Binding Type Binding: N/A (Digital Download) Paper Type Paper Type: N/A (Digital Download) Compatibility Operating Systems: All Versions of Windows & Mac Requirements Software Required: Adobe PDF Reader ⚙️ Engine Specifications Primary Engine Engine Options 2004-2006: 4.3L V6 (LU3), 4.8L V8 (LR4), 5.3L V8 (LM7), 6.0L V8 (LQ4 - Heavy Duty/SS) Engine Options 2007-2009: 4.3L V6 (LU3), 4.8L V8 (L20), 5.3L V8 (LY5/LC9), 6.0L V8 (L76/LFA), 6.2L V8 (L92/L94) Performance Horsepower Range: Approximately 195 hp (4.3L V6) to 403 hp (6.2L V8) Torque Range: Approximately 260 lb-ft (4.3L V6) to 417 lb-ft (6.2L V8) Fuel System Fuel Delivery: Multi-port Fuel Injection (MPFI) or similar electronic fuel injection systems. Fuel Type: Unleaded gasoline, with some engines potentially supporting E85 FlexFuel (LC9). Maintenance Oil Type Recommendation: Typically SAE 5W-30 synthetic blend or full synthetic, depending on engine and climate. Refer to manual for exact specification. Air Filter Part Numbers: Varies by engine and model year. Examples include ACDelco A1802C, Wix WA10114, Fram CA9970. Exact part number is crucial and found in manual/parts catalog. 🔧 Transmission Standard Standard Transmission: Most models came standard with automatic transmissions. Manual transmissions were less common, particularly in later years and higher trims. Optional Optional Transmission: 4-speed automatic (4L60E/4L65E, 4L70E), 6-speed automatic (6L80E, 6L90E for later models/HD). Features Transmission Modes: Driverselectable modes (e.g., Tow/Haul mode) often available to optimize shift points for heavy loads. Maintenance Transmission Fluid Type: Dexron-VI (for 2006+ models with 6L80E/6L90E) or Dexron-III/VI compatible fluids for earlier 4-speed automatics. Always verify with manual/dealer. 📐 Dimensions Exterior Body Styles: Regular Cab, Extended Cab (Double Cab), Crew Cab. Bed Lengths: Short Bed (approx. 69.3 inches), Standard Bed (approx. 78.9 inches), Long Bed (approx. 97.6 inches). Wheelbase: Varies by cab and bed configuration, ranging from approximately 119 inches to 167 inches. Weights Curb Weight: Varies significantly based on configuration, generally from 4,500 lbs to 5,500+ lbs. Towing Capacity: Up to 10,500+ lbs depending on configuration, engine, rear axle ratio, and towing package. Payload Capacity: Varies, typically 1,500 lbs to 3,000+ lbs. 🛡️ Safety Features Ratings NHTSA Front Crash Test Rating: Generally 4-star or 5-star for front impact protection (varies by year and specific test). IIHS Crash Test Rating: Good to Acceptable ratings in various categories, depending on year and specific test (e.g., frontal offset, side impact). Active Features ABS: Standard Anti-lock Braking System (ABS). Traction Control: Available Traction Control System (TCS) and StabiliTrak electronic stability control (especially on later models). Passive Features Airbags: Frontal airbags for driver and passenger. Available side-impact airbags (curtain or seat-mounted) on certain trims/configurations. Seat Belts: Three-point seat belts for all occupants, with pretensioners and load limiters for front seats. 💡 Technology Features Infotainment Audio Systems: Base AM/FM radio, optional CD player, optional Bose...