This comprehensive GMC Sierra HD 2500 3500 Pickup Truck Workshop Service Repair Manual provides detailed instructions and illustrations for all service and repair procedures. Covering the model years 2007, 2008, and 2009, this manual is an invaluable resource for both professional mechanics and DIY enthusiasts.

The manual encompasses every aspect of vehicle maintenance and repair, including but not limited to:

* **Engine:** Detailed information on engine components, troubleshooting, repair, and rebuild procedures.
* **Transmission:** Guidance on transmission operation, maintenance, and repair, covering both automatic and manual transmissions.
* **Drivetrain:** Comprehensive coverage of axles, differentials, transfer cases, and four-wheel drive systems.
* **Brakes:** Detailed instructions on brake system components, adjustments, and replacement procedures.
* **Suspension and Steering:** Information on suspension and steering components, alignment, and repair.
* **Electrical System:** Comprehensive coverage of electrical systems including wiring diagrams, troubleshooting, and repair procedures.
* **Body and Interior:** Detailed instructions for bodywork, interior repair, and upholstery.
* **Climate Control:** Information on AC and heating systems, including troubleshooting and repair.
* **Safety Systems:** Detailed information on safety features such as airbags, seatbelts, and anti-lock brakes.

This manual is designed to be easy to use and understand, with step-by-step instructions and clear illustrations. The information is presented in a logical and organized manner, making it easy to find the information you need.

The GMC Sierra HD 2500 and 3500, produced from 2007 to 2009, are heavy-duty pickup trucks designed for demanding tasks and towing. These models, part of the third generation Sierra platform, boast a rugged exterior and a robust powertrain, making them ideal for hauling heavy loads and conquering challenging terrains. The Sierra HD 2500 and 3500 come equipped with a range of powerful engine options, including the 6.0L Vortec V8 and the potent 6.6L Duramax V8 diesel engine. The Duramax engine, coupled with the Allison 1000 six-speed automatic transmission, delivers exceptional torque and towing capabilities. The Sierra HD also offers a suite of features aimed at enhancing driver comfort and convenience, including a spacious cabin, advanced technology, and numerous safety features.

The Sierra HD 2500 and 3500 were offered in various trim levels, each catering to specific needs and budgets. From the basic work truck configuration to the luxurious Denali trim, these trucks cater to a wide range of customers, from construction workers to families seeking a capable towing platform. The Sierra HD series was lauded for its ruggedness, reliability, and impressive towing capacity. It was a popular choice among those seeking a heavy-duty pickup truck that could handle demanding tasks without compromising on comfort and convenience. The 2007-2009 GMC Sierra HD 2500 and 3500 remain sought-after vehicles in the used truck market, known for their durable construction and capability.