2020 - 2023 L5P Duramax T93 TCM Unlock Service By PPEI Tuning
PP-US-T93Unlock your 2020–2023 L5P Duramax T93 TCM for tuning access—fast, simple, and compatible with any tuning provider. Send in your TCM (or a core you’ve sourced), and PPEI will unlock it and ship it back—typically within up to 2 business days after it arrives.
Why this service
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Universal compatibility: Works with all tuning providers—this isn’t limited to PPEI calibrations.
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Hassle-free process: Mail-in unlock with quick turnaround once received.
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Pro-level readiness: Enables flashing supported calibrations on the T93 module.
Pricing (quantity discounts)
| Quantity | Price |
|---|---|
| 1 TCM | $200 |
| 2 TCM | $300 |
| 3 TCM | $400 |
| 4 TCM | $500 |
| 5 TCM | $600 |
Pricing applies per order based on the number of TCMs you include.
What’s included
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Professional bench unlock of your T93 TCM
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Post-unlock verification
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Return shipment of the unlocked unit back to you
Compatibility
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Vehicle/Engine: 2020–2023 GM L5P Duramax
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Module: T93 Transmission Control Module
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Tuning: Compatible with PPEI and all other tuning companies
How it works (step-by-step)
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Order the service with the correct quantity for the number of TCMs you’re sending.
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Remove your T93 TCM (or use a core TCM you’ve sourced).
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Package & ship the TCM(s) to PPEI with your order number clearly included.
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PPEI unlocks your TCM(s) within up to 2 business days after they arrive.
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We ship it back—reinstall and proceed with your preferred tuning provider.
FAQs
Is this a tune?
No—this service only unlocks the T93 TCM to allow flashing supported calibrations.
Do I need to use PPEI tunes afterward?
No. The unlock is universal and works with any tuning provider.
Do you provide core TCMs?
This service assumes you’re sending your TCM or a core you’ve sourced. (If you need help, contact support for current options.)
Turnaround time?
Up to 2 business days after arrival at PPEI, plus return shipping transit time.
Shipping details
You’re responsible for shipping your TCM(s) to PPEI. We’ll handle the return shipment to you once unlocking is complete.
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WHO IS THE TUNER/CALIBRATOR
PPEI, also known as Power Performance Enterprises, Inc., is led by the business owner and lead calibrator/tuner Kory Willis. PPEI began calibrating/tuning back in 2008, specializing in Diesel Performance but has since expanded into the Gas and Powersports industries. Kory and the team at PPEI have set many world records along with continuing many industry “firsts”. We take pride in knowing that Kory not only prides his work, but also thoroughly enjoys setting expectations high for our team so our customers can have the best products available in the world.