Pre-Tuned Replacement T87A TCM 2017-2019 (L5P) Allison Transmission

Fitment: 2017-2019 GM 6.6L DURAMAX L5P

SKU: DT1160000008001
$775.00
$775.00
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Pre-Tuned Replacement T87A TCM 2017-2019 (L5P) Allison Transmission

Pre-Tuned Replacement T87A TCM 2017-2019 (L5P) Allison Transmission

$775.00

Pre-Tuned Replacement T87A TCM 2017-2019 (L5P) Allison Transmission

$775.00

The 2500 and 3500 HD Silverado/Sierra's equipped with the 6.6L Duramax routinely have factory TCM issues that cause limp mode, loss of PRNDL display, and trigger check engine lights. The DuramaxTuner Pre-Tuned Replacement TCM is a brand new and upgraded TCM for your stock 2017, 2018, and 2019 Allison 1000 T87A Transmission Control Module. Your new TCM will arrive pre-programmed for your VIN and includes our custom, TCM Tuning.Transmission Tuning

The 6-Speed Allison found in your 2017-2019 L5P Duramax earned its reputation for excellence largely because of the advanced electronic control provided by the TCM (Transmission Control Module). Changing that factory calibration is especially important for you when you modify your truck and/or install ECM Tuning. Custom TCM Tuning gives you quicker shift changes, smoother operation, and an overall better driving experience.

Whats the difference between Mild and Aggressive Transmission Tuning?

Smooth Shift Points is the best choice for you if you . . .

Want similar feeling to stock shift schedule

Have a near-stock truck

Installed a Box Tuner

Are an Everyday Diesel Guy

Use your truck as a daily commuter

Aggressive/Elevated Shift Points is the best choice for you if you . . .

Have an upgraded turbocharger

Run 35+ size tires

Prefer higher RPM operation or holding the gear longer

Installed custom engine tuning

Why do you need TCM Tuning?

Works with any ECM Tuning to provide smooth shifting and superior drive-ability

Torque converter lockup strategy helps you put power to the ground when you need it the most

Improve clutch holding capacity with increased line pressure

Makes your truck feel more powerful

Prevents short-shifting in performance applications

TCM Tuning is the best tool to ensure your engine is operating within its preferred rev range

TCM Tuning is especially important for trucks with:

Any ECM Tuning, Box Tuner, or Throttle booster

Larger tires (35+)

Modified turbo(s)

Built transmission

Any modification that impacts operating RPMs

Towing & Performance

Use the wider torque curve provided by ECM Tuning

Keep your truck in its power band when lugging up a grade

Quicker shifts mean less time between gears and more time putting power to the ground

Optimize your aftermarket performance parts

* ALL PICTURES SHOWN ARE FOR ILLUSTRATION PURPOSE ONLY. ACTUAL PRODUCT MAY VARY DUE TO PRODUCT ENHANCEMENT.

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Product Returns

Product Return Policy

  • Returns must be packaged securely in an outer carton
  • Do not write on the product packaging itself. Write only on the outer shipping carton.
  • Packages received without a Return Authorization Number written clearly on the outer carton will be refused.
  • Returnable items must be received by SUP within 30 days of the product being received by you the customer. (determined by tracking number)
  • Returned product must be in new, re-saleable condition, with all original boxes, packaging, parts, cables, manuals, etc.
  • Upon receipt, all returns will be inspected, and, at our discretion, credit may be refused or a restocking fee of 5%-10% may be assessed.
  • Original shipping cost and shipping protection charges are non-refundable.
  • Customer is responsible for shipping costs incurred to return products.
  • Products can only be returned for a refund, store credit, or an exchange for the same item. Product cannot be exchanged for a different part number.

Some Circumstances in which credit will not be issued but not limited to:

  • Product has been installed and/or used
  • Product has been damaged from an attempt to be installed and/or used
  • Product is shipped back without original box, manual and/or parts
  • Seal on electrical parts is broken
  • Product serial number does not match that of which was original shipped to buyer
  • Product is deemed not resell able by SUP due to customers own actions in dealing with the product

Core Returns

Core Return Instructions: STOP! Please read to avoid costly delays!

  • Step 1:  Verify the core will be received back within 30 days. (See Deadline)
  • Step 2: Fill out the Return Form.
  • Step 3: Wait for return instructions. SUP will email a return number (RMA) and a return shipping address. Many cores will be sent directly back to the manufacturer, so please read the instructions.
  • Step 4: Package the core. Good packaging prevents costly damage and/or the core being refused by the shipping carrier. It may be possible to reuse the box your original product came in. If not, use a box strong enough to support the product. Seal the product in a plastic bag to prevent leaks. Cushion the product with packing material and securely seal the package with tape.
  • Step 5: Attach the shipping label you have purchased (see return shipping policy) and write the return number (RMA) large and clear on the outside of the box.
  • Step 6: Ship the core.

Core Return Policy *** Important Please Read ***

Deadline: Core returns will only be accepted within 30 days of receiving the original product. After 30 days core credit refunds will be at the discretion of SUP.

Refund Policy: Returns made between 0-30 days are eligible for credit back to the original payment method used for the purchase. Credit may be full, partial, or denied based on the acceptance policy below. Please allow up to 4 weeks after the core is received for inspection and refund if accepted.

Return Shipping Policy: Core return shipping is the responsibility of the customer. SUP recommends using a carrier that provides package tracking and insurance. You will not be reimbursed for shipping costs incurred in shipping the core. SUP is not responsible for cores received damaged, freight penalties, and/or lost shipments.

Acceptance Policy:

 

  • No leaking fluids, all fluids must be drained, and the core must be sealed in a plastic bag. 
  • The core returned must be a like-for-like make, model, type, and part number.
  • Cores will not be accepted from a salvage or junkyard.
  • Cores must not be disassembled or have missing and/or damaged major components. 
  • Cores must be in rebuildable condition.

Core refund acceptance is at the discretion of SUP and the manufacturer/remanufacture or the original product. Failure to follow the above policy may result in partial credit and/or no credit being issued. If you would like a core returned that has been denied acceptance, you may request that within 30 days and pay for return shipping. Cores that have not been accepted and are unclaimed by the customer after 30 day will be destroyed and disposed of.

Updated 08/22/2024

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