Duramax L5P 2017-2023 DELETE SOFTWARE

Please choose the correct year variant before placing your order.

This software is compatible with:

• Years: 2017–2023
• Models: Chevy Silverado 2500HD and 3500HD, GMC Sierra 2500HD and 3500HD
• Engine: 6.6L L5P Duramax
• Body styles: all pickup trims, cab sizes and box lengths

Not compatible with: Cab & Chassis models. For Cab & Chassis trucks, please contact our team at (888) 830-2588.

By deleting the factory emissions system that’s been suffocating your diesel, you’ll notice a night-and-day difference right away.

• Better performance: your truck runs better in every way, starting with throttle response.
• Better fuel economy: an average 5 mpg increase.
• Pays for itself: over time, the fuel savings alone cover the cost of the delete tunes.
• Fewer shop visits: no more costly trips to the dealer for emissions repairs.
• Peace of mind: your truck no longer has a ticking time bomb attached to it.

Our custom tunes include multiple power levels, so you can run your truck the way you want. On pickup models, you can change between levels in real time (also known as “shift on the fly”) using your truck’s steering wheel controls.

L5P power settings:

• Level 1 (Stock): no added HP. Ideal for daily driving and towing.
• Level 2: +50 HP. Ideal for daily driving and towing.
• Level 3: +80 HP. Ideal for daily driving and towing.
• Level 4: +130 HP. Ideal for performance applications.
• Level 5: +200 HP. Ideal for performance applications. Results can vary by about 20 HP depending on whether you have a cold air intake and full exhaust.

Available power levels depend on your truck’s year.

The package includes:

• L5P Duramax delete software files with our custom delete tunes, including shift on the fly (pickup models only)

Optional add-ons:

• 8 tuning credits

Software only: no tuner or other hardware is included.

You’ll need 8 tuning credits for these tunes to work.

• Buying credits from us: select “Add tuning credits” when you order, and we’ll include the 8 credits this application needs.
• Already have credits: if you bought tuning credits elsewhere, you don’t need to buy more from us.

Not sure you have the right setup? Contact our sales team at (888) 830-2588 ext. 2 or sales@thedieseldudes.com.

Not tech savvy? Nervous about the software or frying your truck? No worries! Every order comes with a step-by-step instruction guide, and if you run into any issues, we’ve got your back. Contact us anytime and we’ll get it sorted.

• Software: installs with a laptop.
• Laptop requirements: a Windows PC running Windows 10 or newer. Mac and Linux aren’t compatible.

Clear all codes first: clear every check engine light and code before you install the delete tunes. Codes left in place can become permanent.

If you’re a complete fish out of water when it comes to working on your truck, we highly recommend having a shop do the install.

Every tune for this software pack is one of our custom tunes, built specifically for your truck, so we need a few details from you first.

1. Check your email. After you purchase, we’ll email you a vehicle information form.
2. Fill out the form. Complete it online with the details we ask for, such as your VIN and your truck’s year, make and model.
3. Send your ECM serial number. We’ll email you instructions for finding it.
4. Submit it. We need the completed form before we can build your custom tune and send you your tune files.

Running into any issues? Open a support ticket and our team will help.

Cab & Chassis trucks get a single +40 HP tow tune. These software files work with Cab & Chassis setups, but shift on the fly isn’t available on these models.

Processing

Right after you complete your purchase, we’ll email you a vehicle information form. We need it before we can build your custom tune, so processing starts once you submit the form.

Delivery

• By email: we’ll email you your tune files within 3–5 business days of receiving your completed form.

Returns

This software pack is built to order, so it isn’t eligible for refunds.