SKU: DMTDT1150010005049

Light Tow Tune Only for EFI Live Spade

Ships From Manufacturer in 3-5 Days
Confirmed fitment below
YEARS
2014
MAKE / MODEL
GM/Chevrolet/GMC / Silverado/Sierra
SERIES
2500HD/3500HD
ENGINE
6.6L Duramax LML
Price
$300
or
American Express
Apple Pay
Diners Club
Discover
Google Pay
Mastercard
PayPal
Shop Pay
Visa
Free Shipping
ORDERS $70+
Easy Returns
HASSLE-FREE
Earn Rewards
ALLIGATOR POINTS
Not sure this fits your build?
Our diesel experts know these trucks. Call or chat before you buy.
1-208-719-7400

PRODUCT DETAIL

Key Features & Description

Features:

  • Gain up to +55 HP and +99 ft-lbs
  • Built for towing under 8,000 lbs
  • Emissions intact and 49-state legal
  • Custom SMART EGT control for safe temps
  • Smooth power curve for daily driving
  • Improved throttle response and pedal feel
  • Factory turbo brake remains fully functional
  • Limits soot with calibrated air-fuel ratios
  • Back up trailers without jerking or lurching
  • Includes 100+ calibration changes from stock
  • Designed for EFI Live Spade hardware
  • World-class support from DuramaxTuner.com

Tow Light Feel Strong And Drive Smoother

If your 2014 Duramax is your daily driver and weekend workhorse, this Light Tow Tune is the perfect way to wake it up without going overboard. It’s designed specifically for trucks towing under 8,000 pounds, giving you the extra power and control you need without stressing your engine or transmission. Right away, you’ll notice stronger throttle response and a smoother pedal feel, making everyday driving more enjoyable even when you're not hooked to a trailer. With an increase of up to 55 rear-wheel horsepower and 99 ft-lbs of torque, your truck pulls confidently out of the driveway and stays in the powerband when you need it most. Whether you’re towing a boat, a UTV, or just hauling tools and equipment for work, this tune gives you usable power where it matters. Backing up a trailer becomes easier with revised pedal sensitivity that prevents lurching or jerky movements at low speeds. Best of all, it's 49-state legal and emissions intact, so you can run it confidently without modifying your factory systems.

Calibrated For Control When Towing Gets Technical

This Light Tow Tune is a fully custom calibration built to enhance performance, manage heat, and maintain factory reliability for 2014 GM 2500HD and 3500HD trucks equipped with the 6.6L Duramax LML. It features more than 100 precise adjustments from the stock ECM file, resulting in cleaner power delivery, optimized air-fuel ratios, and smooth torque application during loaded driving. With SMART EGT control built into the tuning, the system automatically manages exhaust temperatures, helping to prevent overheating under steady or uphill towing conditions. Unlike generic box programmers, this tune retains full functionality of your factory turbo-braking system and does not require any emissions deletes or wiring changes. It's emissions intact and safe to run across 49 states while still delivering a noticeable performance boost. The power curve is calibrated for practical use, making the truck feel quicker off the line while keeping soot output in check. Designed to work with EFI Live Spade (AutoCal v3) hardware, this tune is also fully compatible with additional upgrades like TCM tuning to further enhance shifting and drivability.

Fitment: 2014 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Notes:

  • Requires EFI Live Spade (AutoCal v3) hardware
  • EFILive license included when purchasing hardware from us
  • License, serial number, and auth code required if using existing hardware
  • Emissions intact and 49-state legal
  • Not intended for towing over 8,000 lbs
  • Recommended for light-duty towing and daily driving
  • Ideal for small trailers, UTVs, boats, or jobsite equipment
  • Revised pedal sensitivity improves low-speed trailer control
  • Retains full factory turbo-braking functionality
  • Custom tuning includes over 100 calibration changes
  • Transmission tuning recommended for best performance
  • Better suited for trucks without major performance mods

 

FITMENT GUIDE

Exact Fitment — Verify Your Year

Year RangesYears
Make
Model
Series
Engine
2014
GM/Chevrolet/GMC
Silverado/Sierra
2500HD/3500HD
6.6L Duramax LML

CUSTOMER REVIEWS

What Buyers Say

Call a Diesel Expert, we'll find the right fit for your build

Not sure this part is right for your truck? Our team knows these platforms inside out. No hold music, no scripts.

Chat with Us