This comprehensive GMC Sierra HD 2500 3500 Pickup Truck Workshop Service Repair Manual covers all models from 2007 to 2009, providing you with the detailed information you need to work on your vehicle like a professional. The manual contains step-by-step instructions and diagrams to guide you through every repair, maintenance, and troubleshooting task.

The manual covers a vast array of topics, including:

* **General Maintenance:** Learn essential maintenance procedures such as oil changes, fluid checks, and filter replacements, keeping your truck running smoothly.
* **Troubleshooting:** Quickly diagnose and address common vehicle issues with comprehensive troubleshooting guides for a wide range of systems.
* **Engine Service and Repair:** Gain the knowledge to perform engine repairs, from basic tune-ups to complex rebuilds, ensuring peak performance and longevity.
* **Transmission Service and Repair:** Master the intricacies of transmission systems, including maintenance, repair, and troubleshooting, extending the life of your truck's critical component.
* **Brake System:** Understand the inner workings of your truck's braking system and learn how to maintain, repair, and troubleshoot brakes for safe and reliable stopping.
* **Wiring Diagrams:** Decipher the complex electrical system with detailed wiring diagrams, making diagnosing electrical issues and performing repairs easier.
* **Electrical System:** Gain expertise in the electrical system, covering components, troubleshooting, and repair techniques.
* **Suspension:** Learn how to maintain, adjust, and repair your truck's suspension system for optimal ride comfort and handling.
* **Periodic Lubrication:** Understand proper lubrication schedules and procedures for critical components, ensuring smooth operation and extending their lifespan.
* **Steering:** Master the mechanics of your truck's steering system and learn how to service, repair, and troubleshoot steering issues for safe driving.
* **Cooling System:** Gain in-depth knowledge of the cooling system's function and learn how to perform maintenance, repair, and troubleshooting tasks.
* **Fuel Injection:** Work confidently with the fuel injection system, understanding its components, operation, and troubleshooting procedures.
* **Fuel System:** Learn about the fuel system's vital parts, their functions, and how to maintain, repair, and troubleshoot them.
* **Emission System:** Stay informed about emission control systems and learn how to maintain, repair, and troubleshoot them to comply with environmental regulations.
* **Heater and Air Conditioner:** Master the operation, maintenance, and repair of your truck's heating and air conditioning system for optimal comfort.
* **Engine Control System:** Dive into the complexities of the engine control system, understanding its function, troubleshooting, and repair procedures.
* **Chassis and Body:** Understand the construction and repair of the truck's chassis and body, including maintenance and troubleshooting.
* **Restraint System:** Gain knowledge of the safety systems, including seatbelts and airbags, and learn how to inspect, repair, and maintain them.
* **Interior:** Learn how to maintain, repair, and troubleshoot various interior components, including the dashboard, seats, and door panels.
* **Differential and Drive:** Understand the workings of the differential and drive systems and learn how to service, repair, and troubleshoot them.
* **Axle:** Explore the axle system, covering its components, function, maintenance, repair, and troubleshooting procedures.

This comprehensive manual provides an in-depth understanding of your GMC Sierra HD 2500 3500 Pickup Truck, empowering you to perform a wide range of tasks with confidence.

The GMC Sierra HD 2500 and 3500, produced from 2007 to 2009, represent the heavy-duty end of the popular Sierra pickup truck lineup. Built to tackle demanding tasks and heavy loads, these trucks were designed for work, towing, and hauling. They boasted a robust construction, featuring a sturdy frame and powerful engines. The 2500 model offered a choice between a 6.0L Vortec V8 gasoline engine or a 6.6L Duramax V8 turbodiesel engine, while the 3500 model exclusively came equipped with the Duramax diesel. Both engines delivered ample power and torque, enabling the Sierra HD 2500 and 3500 to handle heavy payloads and tow substantial trailers. The heavy-duty suspension was engineered for durability and stability, even when carrying maximum weight. These trucks offered a range of cab configurations, including regular, extended, and crew cab options, providing flexibility for passengers and cargo. A variety of bed lengths were also available, ensuring sufficient space for hauling various loads.

The GMC Sierra HD 2500 and 3500 from 2007 to 2009 were more than just work-ready trucks. They also featured comfortable interiors, with features like cloth or leather seating, a standard AM/FM stereo system, and optional extras like power windows, locks, and mirrors. The availability of safety features like anti-lock brakes, traction control, and side airbags ensured a safe driving experience, even in demanding work environments. While the 2007-2009 Sierra HD 2500 and 3500 are no longer in production, they remain popular choices for individuals and businesses in need of a reliable and powerful truck. Their rugged construction, powerful engines, and dependable performance make them well-suited for demanding tasks and heavy-duty applications. Whether used for daily work, hauling heavy equipment, or towing large trailers, these trucks are capable of handling a wide variety of tasks with ease.