🏷️ Basic Information Identification Make: GMC Model: Sierra 1500 Year: 2008 Codes Platform Code: GMT900 (GMT900 platform) 👋 Introduction Market Position Positioning: Targeted at GMC Sierra 1500 owners seeking reliable, in-depth repair and maintenance information, differentiating itself from generic online forums and basic owner's manuals by providing OE-derived licensed data. Competitive Analysis Advantages Over Print: Convenience, instant access, searchability, multi-device compatibility, typically more cost-effective than purchasing individual printed shop manuals. Key Features Licensing: Officially licensed by GM (General Motors), ensuring accuracy and authenticity of information derived from OE (Original Equipment) materials. Developer: RepairSurge (specialized automotive software company) User Benefit: Empowers DIY repairs, saving money on labor costs, and facilitates proactive maintenance for vehicle longevity. 📋 Manual Details Coverage Areas Primary Coverage: Service and Repair Manual Software Secondary Coverage: Maintenance, Diagnostics, Troubleshooting, Component Replacement, Wiring Diagrams, Specifications Page Count Estimated Content Equivalent: Thousands of pages (digital format with searchable content) Manual Type Type: Online Service and Repair Manual (Software) Language Language: English Format Access Method: Web Browser Access (Internet Connection Required) Device Compatibility: PC, Laptop, Smartphone, Tablet Subscription Duration: 1 Year Access (Discounted renewal available) 📖 Manual Coverage Systems Covered Powertrain: Engine Mechanical, Fuel System, Ignition System, Exhaust System, Engine Control Systems (ECM), Transmission (Automatic & Manual), Drivetrain (Front Wheel Drive, Rear Wheel Drive, All Wheel Drive), Axles, Driveshafts Chassis: Brakes (Hydraulic, ABS, Traction Control), Steering System, Suspension System (Front & Rear), Wheels & Tires Electrical And Body: Body Control Modules (BCM), Powertrain Control Module (PCM), Chassis Control Modules (CCM), Lighting Systems (Interior & Exterior), Instrument Cluster, HVAC (Heating, Ventilation, Air Conditioning), Audio Systems, Security Systems, Wiring Diagrams, Fuses & Relays, Body Panels, Doors, Glass, Interior Trim Procedures Included Maintenance: Oil Changes, Filter Replacements, Fluid Checks & Replacements, Spark Plug Replacement, Belt Inspection & Replacement, Brake Fluid Flush, Coolant Flush, Air Filter Replacement, Tire Rotation Repair And Diagnostics: Engine Repair (Seals, Gaskets, Timing Components), Transmission Overhaul, Brake System Repair (Calipers, Rotors, Lines), Suspension Component Replacement (Shocks, Struts, Ball Joints, Bushings), Steering System Repair (Rack & Pinion, Power Steering Pump), Electrical Troubleshooting, HVAC System Repair, Component Replacement (Alternator, Starter, Water Pump, Fuel Pump), Diagnostic Trouble Code (DTC) interpretation and repair procedures Technical Procedures: Torque Specifications, Alignment Procedures, Diagnostic Scan Tool Usage, Component Testing, Wiring Harness Repair, Software Updates/Reprogramming (where applicable) Technical Depth Depth: Comprehensive Factory-Level Detail, including component removal and installation, diagnostic trees, troubleshooting guides, and detailed technical specifications. Suitable for both DIY enthusiasts and professional technicians. 📊 Manual Specifications File Format Digital Format: Proprietary web-based software (accessible via browser) Print Quality Digital Quality: High-resolution, clear text and diagrams; often allows for printing of specific pages Binding Type Binding: N/A (Digital) Paper Type Paper Type: N/A (Digital) ⚙️ Engine Specifications Primary Engine Available Engine Options 2008 Sierra 1500: 4.3L V6 (L2B), 4.8L V8 (LY2), 5.3L V8 (LY5/L76), 6.0L V8 (L96/LQ4 - for 2500HD, but common reference) Performance Typical Hp 5.3L V8: Approx. 315 hp @ 5200 rpm (LY5) Typical Torque 5.3L V8: Approx. 338 lb-ft @ 4400 rpm (LY5) Fuel System Fuel Delivery: Sequential Multi-Port Fuel Injection (MPI) Fuel Type: Unleaded Gasoline (87 octane recommended) Technical Details Engine Management: GM's Electronic Throttle Control (ETC) system Cylinder Deactivation: Active Fuel Management (AFM) on some 5.3L V8 engines (LY5) 🔧 Transmission Standard Standard Transmission Type: 4-speed Automatic (4L60-E / 4L70-E) Optional Optional Transmission Type: 6-speed Automatic (6L80-E for some engine variants/models) Features Transmission Fluid Type: Dexron-VI (Automatic Transmission Fluid) 📐 Dimensions Exterior Wheelbase Std Cab: 143.5 inches Wheelbase Ext Crew Cab: 143.5 inches Overall Length Various Configurations: Varies by cab and bed configuration (e.g., 227.4 inches for a 1500 Extended Cab Short Box) Weights Curb Weight Approximate: 4,900 - 5,400 lbs (depending on configuration) Gvwr Approximate: 6,700 - 7,200 lbs (depending on configuration) 🛡️ Safety Features Ratings NHTSA Frontal Crash Test Driver: 5 Stars (for models tested) NHTSA Frontal Crash Test Passenger: 5 Stars (for models tested) NHTSA Side Impact Front Seat Passenger: 5 Stars (for models tested) IIHS Moderate Overlap Frontal Offset: Good (for models tested) Active Features ABS: Standard Anti-lock Braking System (ABS) Traction Control: Standard Traction Control System (TCS) Passive Features Airbags: Standard front airbags, available side-impact airbags and curtain airbags Seatbelts: Three-point seatbelts with pretensioners 💡 Technology Features Infotainment Infotainment Systems: Available AM/FM/CD/MP3 audio systems, optional navigation, and rear-seat entertainment systems. Driver Assistance Driver Assistance Features: Parking assist sensors (rear), integrated trailer brake controller (optional). Connectivity Connectivity Options: Auxiliary input jacks for audio devices. 🔧 Maintenance Service Intervals Oil Change Interval: Typically 7,500 miles or 6 months, or as indicated by the Oil Life Monitoring System (OLMS). Tire Rotation Interval: Every 7,500 miles Engine Air Filter Replacement: Check every 7,500 miles, replace as needed or around 30,000 miles. Cabin Air Filter Replacement: Check annually or every 15,000 miles, replace as needed. Fluid Specifications Engine Oil Type 4.8L 5.3L: SAE 5W-30...