GM T87A Transmission Control Module Clone & Unlock (8L90/10L80 and more)
Failed T87A, a swap that will not shift, or a tuner locked out of the TCM? We clone your T87A onto a donor, or unlock it for tuning — bench work, no dealer SPS session.
Sending several modules? Add them all — one box, one return-shipping charge.
GM T87A TCM on the 8L45 / 8L90 / 10L80 (and related) automatics — Silverado/Sierra, Camaro, Corvette C7, Escalade and more (Global A era, ~2015-2021)
How It Works
Three simple steps. Hundreds of mail-in jobs completed for shops, locksmiths, and DIY pros.
Pay & Get Address
Click "Order Now", pay securely via Stripe. We email shipping address + instructions within minutes.
Ship Your Module
Pack per the instructions and ship to Arlington. USPS goes to our PO Box; UPS and FedEx must use the street address. Customer pays shipping to us.
Receive in 1-2 Days
Work completed within 24 hours of receipt. Ships back next business day at the return speed you chose at checkout — standard to overnight. Tracking emailed.
What You Get
- Your T87A cloned onto a donor with transmission adaptations intact
- OR the module unlocked for tuner write access
- Plug-and-play replacement on a clone — no dealer SPS session
- Part-number verification before you buy a donor
- Both modules returned on a clone
- 24-hour bench turnaround after the module arrives
Compatibility
Confirm your part matches one of the variants below before ordering. Not sure? Text us a photo and we'll verify.
Transmissions
Two services
Who this is for
Will This Fix My Problem?
Honest answer: here's exactly what this service fixes — and what it doesn't.
Fixes:
- ✓Engine/transmission swap needs the T87A married or moved
- ✓A failed T87A you want replaced without a dealer SPS relearn
- ✓Tuner cannot write to a locked T87A
- ✓Used T87A that will not accept the vehicle
Won't fix:
- ✗Mechanical transmission faults inside the gearbox
- ✗ECM/engine tuning — that is the engine computer, ask about ECM unlock
- ✗Non-T87A transmission controllers — send the part number first
- ✗On-car SPS programming — this is bench work
The swap-and-tune bench job GM makes hard on purpose
GM locked the T87A down starting around 2017, and it is squarely in the crosshairs for anyone swapping a drivetrain or chasing a tune. Cloning moves your transmission's learned adaptations onto a donor so a replacement is truly plug-and-play; unlocking opens the door for a tuner to write calibrations. Both are bench operations that skip the dealer SPS session entirely — the same crowd that buys our Global A ECM unlock lives here too. (The newer Global B / T93 trucks are a different, still-locked platform we do not cover.)
Shipping Instructions
These details are also emailed to you the moment your payment clears.
Ship your T87A module (and a part-number-matched donor if you want a clone — text the part number first and we confirm the match). Tell us whether you want a clone or an unlock. Return shipping is selected and paid at checkout — Standard $24.95, UPS 2-Day $54.95, or UPS overnight $94.95. Ship to PO Box 120241, Arlington TX 76012 (USPS) or 1009 Oakwood Ln # 120241, Arlington TX 76012 (UPS/FedEx).
What to include in your box
- Your T87A transmission control module
- A matched donor T87A if you want a clone (we verify the part number first)
- A note: clone or unlock, and your tuner if relevant
- VIN + year, and a printed order confirmation
- Your name, return address, and phone number
Ship to
Auto Module Lab
If shipping USPS
PO Box 120241
Arlington, TX 76012
If shipping UPS or FedEx
1009 Oakwood Ln # 120241
Arlington, TX 76012
Both shipping labels — to the lab and back to you — are purchased the moment you order. Your prepaid inbound label (already addressed) arrives by email; the return ships on the speed you chose at checkout.
Frequently Asked
Still have a question? Text us — replies in minutes.
Clone or unlock — which do I need?
Will a clone need a dealer relearn?
Which transmissions does this cover?
Is this on-car or bench?
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Where we serve GM T87A TCM Clone / Unlock
Mail-in means nationwide. See your state, metro, or specific vehicle:
Ready to ship?
Pay now, get the shipping address by email, drop it in the mail. Your module is back on your bench within a week.