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GDP Manuals & User Guides

GDP provides high-performance diesel engine tuning software, shift-on-the-fly digital switch programmers, and upgrade kits designed to optimize vehicle power.

Tip: include the full model number printed on your GDP label for the best match.

About GDP manuals on Manuals.plus

GDP is a specialized provider of high-performance diesel tuning solutions, software, and hardware specifically engineered for trucks and diesel vehicles. Known for products like the Commander Autoflasher and Shift-On-The-Fly (SOTF) digital switches, GDP Tuning enables truck owners to optimize performance on the track and take complete control of their vehicle's engine management.

Focusing on popular platforms such as Ford Powerstroke, GM Duramax, and Dodge Cummins, GDP offers everything from performance switches to cooler upgrade kits. Their solutions cater to off-road and competition drivers looking for reliable performance modifications and advanced diagnostic capabilities. Please note that many performance products by GDP are intended solely for off-road and closed-course competition use.

GDP manuals

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GDP 3-7 Commander Autoflasher User Manual

Oṣu Kẹrin Ọjọ 14, Ọdun 2026
GDP 3-7 Commander Autoflasher User Manual Disclaimer By installing this product onto your vehicle, you assume all risk and liability associated with its use. GDP Tuning, LLC. is not responsible…

GDP 2020-2021 Ford Powerstroke Alakoso olumulo Afowoyi

Oṣu Kẹrin Ọjọ 12, Ọdun 2023
2020-2021 Ford Powerstroke Commander Ford Powerstroke GDP Commander The Ford Powerstroke GDP Commander is a product designed to optimize the performance of your 2020-2021 Ford Powerstroke vehicle. The product is…

Digital Piano GDP-100 Owner's Manual

eni ká Afowoyi
Comprehensive owner's manual for the GDP-100 Digital Piano, detailing setup, basic operation, features, and functions for an optimal playing experience.

GDP manuals from online retailers

GDP PX28/4LR44 6V Battery User Manual

4Lr44 • January 20, 2026
Instruction manual for GDP PX28/4LR44 6V batteries. Learn about installation, usage, maintenance, and specifications for these 6V alkaline batteries.

GDP support FAQ

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  • How do I contact GDP tech support for help installing my switch?

    You can reach GDP tech support directly at 877-223-5018 for troubleshooting assistance with your tuner, software, or digital switch.

  • Where can I download the GDP Commander software?

    The Commander Autoflasher software and associated USB drivers can typically be downloaded right from the official GDP Products website under their software support section.

  • Are GDP tuning products street legal?

    Many GDP tuning products and cooler upgrade kits are strictly meant for off-road competition racing and are not legal for sale or use on pollution-controlled motor vehicles operated on public streets, roads, or highways.

  • What should I do if my GDP Commander is not responding after plugging it in?

    Verify that the USB drivers are installed properly by checking your computer's Device Manager. Also, ensure you see around 12v (when plugged into the OBD2 or ECU harness) or 4.5v (when relying only on USB power).