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.
Need to perform this job remotely?
Get an Auto Module Lab Remote Programming Kit and have our technicians program supported vehicles from your shop — the car stays on your lift and nothing gets posted.
Supported procedures vary by vehicle, module, OEM software and security requirements.
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.