2017–2023 GM 6.6L Duramax L5P Mail-In ECU Tuning Service

Turnaround Standard Priority

Calibration Type Daily / Street Towing Performance

Vehicle Information

Please provide accurate vehicle information before placing your order.

Vehicle Year *

Vehicle Model *

VIN *

Vehicle Configuration *

Transmission

Current Modifications *

Tire Size

Current Calibration *

Fuel Type

Additional Notes

$999.00

Sale Sold out

Professional mail-in ECU tuning for 2017–2023 Chevrolet Silverado and GMC Sierra 2500HD/3500HD equipped with the 6.6L Duramax L5P.

Send us your original ECM, we professionally program your selected calibration, verify the programming, and return it ready to reinstall.

How It Works

Place your order and complete the vehicle information form.
Remove your original ECM from the truck.
Ship the ECM to VinnieBuilt Automotive.
We identify the ECM and verify the software/application.
Original ECU data is backed up where supported.
Your selected calibration is professionally programmed.
Programming is verified.
Your ECM is returned ready to reinstall.

Calibration Options

Daily / Street

Designed for improved everyday drivability, throttle response and power delivery while maintaining smooth street manners.

Towing

Designed for trucks regularly used for towing and hauling, with an emphasis on usable torque, drivability and controlled power delivery.

Performance

A more aggressive performance-oriented calibration for customers looking for stronger power response and increased overall performance.

What's Included

Professional ECM identification
Original calibration backup where supported
Bench ECM programming
Selected performance calibration
Programming verification
ECM returned ready to reinstall
Calibration-related support

Supported Vehicles

Compatible applications include select:

2017–2023 Chevrolet Silverado 2500HD
2017–2023 Chevrolet Silverado 3500HD
2017–2023 GMC Sierra 2500HD
2017–2023 GMC Sierra 3500HD
6.6L Duramax L5P
Pickup applications
Cab & Chassis applications where supported

Compatibility may vary by ECM hardware, software version and vehicle configuration.

Standard vs. Priority Service

Standard Turnaround
Your ECM is programmed in the normal order received.

Priority 24-Hour Service
Your ECM receives priority processing once received, checked in and verified compatible.

Shipping and transit time are separate from programming turnaround time.

Important

THIS IS A MAIL-IN PROGRAMMING SERVICE. ECM IS NOT INCLUDED.

You must send your existing ECM to VinnieBuilt Automotive for programming.

Previously modified, locked, damaged or improperly programmed modules may require additional work. If anything outside the purchased service is required, we will contact you before proceeding.

Why VinnieBuilt?

No flashing device to purchase.
No software to install.
No remote programming session.

Remove it. Mail it. We program it. Reinstall it.

VinnieBuilt Automotive

Professional ECU Programming • Bench Flashing • Performance Calibration
Miami, Florida

Mail-In Shipping Instructions

After placing your order, remove the ECU/PCM from the vehicle and package it securely for shipment.

Include Inside the Package

Please include a note containing:

Your full name
Shopify order number
Phone number
Vehicle year and model

Your vehicle information is also saved with your online order, but including the order number inside the package allows us to identify your ECU immediately when it arrives.

Packaging

Place the ECU in an anti-static bag when available.
Wrap the module securely with bubble wrap or other protective material.
Use a sturdy shipping box with enough padding to prevent the ECU from moving inside the package.
Do not place loose hardware, brackets or other heavy objects against the ECU.
Do not ship unrelated modules, keys or components unless specifically requested.

Shipping To VinnieBuilt Automotive

Ship your ECU using a carrier that provides tracking.

Inbound shipping to VinnieBuilt Automotive is the customer's responsibility.

We strongly recommend keeping your tracking number until your ECU has been confirmed as delivered.

Turnaround Time

Standard Service: Processed in the normal order received.

Priority 24-Hour Service: Programming is prioritized and normally completed within 24 business hours after the ECU has been received, checked in and verified compatible.

Shipping/transit time is not included in programming turnaround time.

Return Shipping

Once programming and verification are complete, your ECU will be packaged and shipped back to the shipping address provided with your order.

Tracking information will be provided when the return shipment is created.

Important

Do not ship your ECU before completing your online order.

Please write your order number clearly inside the package.

VinnieBuilt Automotive is not responsible for damage caused by inadequate customer packaging or for inbound packages lost or damaged by the shipping carrier.

VinnieBuilt Automotive

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