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GM TEHCM Solenoid-Pack Transmission Control Module Cloning — Mail-In Bench Service (6L & 6T Six-Speeds)

Wrench light, "Service Transmission," harsh or no shifts, and stuck in limp mode after a valve-body or solenoid-pack swap? Mail in your original TEHCM plus a matching donor and we clone the VIN, calibration, and adaptation across on the bench so the replacement drops in — no dealer SPS programming trip.

$250 flatFast TurnaroundFlat-rate return shipping

Sending several modules? Add them all — one box, one return-shipping charge.

Text Before You Buy

GM TEHCM / solenoid-pack TCM — RWD 6L45 / 6L50 (CTS, ATS, SRX, Camaro V6, Colorado / Canyon) and 6L80 / 6L90 (Silverado, Sierra 1500-3500HD, Tahoe, Suburban, Yukon, Escalade, Avalanche, Express / Savana, Camaro SS, Pontiac G8, CTS-V), plus FWD / AWD 6T70 / 6T75 / 6T80 (Malibu, Impala, Equinox, Terrain, LaCrosse, Regal, Traverse, Acadia, Enclave), roughly 2006-2020. Verified by VIN + module label before you ship.

How It Works

Three simple steps. Hundreds of mail-in jobs completed for shops, locksmiths, and DIY pros.

GM TEHCM solenoid-pack transmission control module opened on the bench for data cloning
1

Pay & Get Address

Click "Order Now", pay securely online. We email shipping address + instructions within minutes.

Software cloning VIN, calibration, and adaptation data between two GM TEHCM units
2

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.

Macro view of a GM transmission control module circuit board
3

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 original TEHCM's VIN, calibration, and learned shift-adaptation data cloned onto the donor solenoid-pack module
  • Donor part-number and family compatibility verified by VIN and module label before you ship
  • Bench read + verify of both units before anything is written
  • Bench communication test on a stable, regulated power supply before return
  • Clear install notes — including the shift-adaptation relearn drive cycle to complete at the car
  • Straight answer up front if your donor is not a compatible match, before you pay
  • Modules returned with tracking — return-shipping speed your choice at checkout

Compatibility

Confirm your part matches one of the variants below before ordering. Not sure? Text us a photo and we'll verify.

Service path ($250 flat)

Clone — VIN, calibration, and learned adaptation copied from your original TEHCM onto the donor solenoid packResult installs without a dealer SPS programming trip on supported applicationsUsed / second-hand solenoid-pack TEHCM installation prep — the most common useNew AC Delco solenoid-pack TEHCM programmed to your VIN before it goes in

RWD 6-speed — 6L45 / 6L50 (light-duty Hydra-Matic)

6L45 — Cadillac CTS 3.6 RWD (2008-2013), ATS 2.0T / 2.5L (2013-2019)6L50 — Camaro V6 (2010-2015), CTS / CTS Coupe 3.6, SRX 3.6 (2010-2016)6L50 — Cadillac STS 3.6 and related RWD applications2015-2016 Chevrolet Colorado / GMC Canyon and other light RWD applications (verify by VIN)Roughly 2007-2019 depending on platform

RWD 6-speed — 6L80 / 6L90 (heavy-duty Hydra-Matic)

6L80 — Silverado / Sierra 1500 (2007-2013), Tahoe, Yukon, Suburban, Avalanche6L80 — Escalade / ESV / EXT, Camaro SS, Pontiac G8 GT / GXP, Chevrolet SS / Caprice PPV, Cadillac CTS-V6L90 — Silverado / Sierra 2500HD / 3500HD, Suburban 2500, Yukon XL 25006L90 — Express / Savana full-size vans and heavy-duty applications6L80E / 6L90E swap builds using a factory GM TEHCM (verify the part number)Roughly 2006-2020 depending on platform

FWD / AWD 6-speed — 6T70 / 6T75 / 6T80 (Hydra-Matic)

6T70 — Malibu, Equinox, Terrain, Impala, LaCrosse, Regal, Captiva Sport6T70 — Saturn Aura / Vue, Pontiac G6 late applications6T75 — Traverse, Acadia, Enclave, Outlook, Impala 3.6, LaCrosse 3.6, Malibu 3.66T80 — heavier FWD / AWD applications: Traverse, Acadia, Enclave, Impala 3.6Equinox, Terrain and related crossovers (verify by VIN)Roughly 2007-2019 depending on platform

Best for

Replacing a failed valve body / solenoid pack (the TEHCM goes with it)Internal mode switch or solenoid performance codes with a "Service Transmission" messageUsed TEHCM installed and the truck is stuck in limp / failsafe modeAvoiding a dealer or shop SPS programming charge on a module you already sourced

NOT this listing — verify first

8-speed 8L45 / 8L90 T87A — our separate GM T87A clone / unlock service10-speed 10L80 / 10L90 controllers — contact us to verify before orderingGlobal B (T93) transmission controllers — no bench clone path, excluded4L60E / 4L80E four-speeds — the TCM function lives in the PCM, see our GM ECM/PCM cloning serviceMechanical valve-body, clutch, or pump wear — that is a transmission repair, not a module job

Will This Fix My Problem?

Honest answer: here's exactly what this service fixes — and what it doesn't.

Fixes:

  • ✓Valve body / solenoid pack replaced and the transmission won't shift right until the module is programmed
  • ✓"Service Transmission" or wrench light with internal mode switch or solenoid performance codes
  • ✓Used TEHCM installed and the vehicle is stuck in limp / failsafe (single-gear) mode
  • ✓Harsh, delayed, or no shifts after a solenoid-pack swap on a 6L or 6T six-speed
  • ✓New AC Delco solenoid-pack TEHCM that needs your VIN and calibration before install
  • ✓You want to avoid a dealer SPS programming trip for a module you already have

Won't fix:

  • ✗Does not include the donor solenoid pack / TEHCM — you source a matching used or new unit (we verify the part number first)
  • ✗Does not repair mechanical valve-body wear, worn clutches, or a failing pump — that is a transmission mechanical repair, separate from the module
  • ✗Does not replace the shift-adaptation relearn drive cycle done at the car after install — the transmission relearns fast-idle and shift pressures on the road
  • ✗Does not cover the 8-speed T87A Global A TCM — that is our separate GM T87A clone / unlock service
  • ✗Does not cover the 10-speed 10L80 / 10L90 or Global B (T93) controllers under this listing — contact us to verify yours
  • ✗Does not fix codes caused by a low or contaminated fluid level, wiring, connectors, or a failing internal harness
  • ✗Does not bypass proof of ownership

The TCM lives inside the solenoid pack — replace one and you replace both

On GM's 6L and 6T six-speeds the transmission control module is not a separate computer bolted to the case — the TEHCM is built into the valve body / solenoid pack. So when a mode-switch or solenoid fault forces a solenoid-pack replacement, the module goes with it, and the new pack carries no VIN, no calibration, and none of your transmission's learned adaptation. The dealer answer is an SPS session on GM's servers. The bench answer is this clone: we copy your original TEHCM's identity onto the donor so the car accepts it as its own. Remember this is data, not mechanics — the donor pack must match your part number, and the transmission still needs its shift-adaptation relearn drive cycle after install.

Shipping Instructions

These details are also emailed to you the moment your payment clears.

Verify first: text or email us your VIN plus a clear photo of your original TEHCM / solenoid-pack part-number label (and the donor's, if you have it) — a technician confirms the family and part number are a compatible match before you ship. Then send both units (your original TEHCM for the clone, plus the donor) to PO Box 120241, Arlington TX 76012 if you ship USPS — or 1009 Oakwood Ln # 120241, Arlington TX 76012 if you ship UPS or FedEx (UPS and FedEx cannot deliver to a PO Box). We clone the data on the bench, test communication, and ship both back via the return option you pick at checkout (Standard $24.95, UPS 2-Day $54.95, or UPS overnight $94.95).

What to include in your box

  • Your original TEHCM / solenoid pack (for the clone) AND the donor solenoid-pack TEHCM
  • Year, make, model, engine, and transmission (e.g. 2015 Silverado 1500 5.3L 6L80)
  • VIN of the vehicle
  • GM part number off BOTH module / solenoid-pack labels — we pre-verify the match
  • What is wrong now: mode-switch code, solenoid performance code, limp mode, cranks-shifts-wrong after swap, etc.
  • Whether the transmission is otherwise mechanically healthy (fluid level, no slipping) so we can flag mechanical vs module issues
  • Proof of ownership (title, registration, or bill of sale)
  • 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.

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Buy the interface once — program with us anytime. Supported procedures vary by vehicle, module, OEM software and security requirements.

Frequently Asked

Still have a question? Text us — replies in minutes.

What is a TEHCM and why does replacing the solenoid pack need programming?
The TEHCM (Transmission Electro-Hydraulic Control Module) is GM's transmission control module — and on the 6L and 6T six-speeds it is integrated into the valve body / solenoid pack rather than being a separate box. So when a mode-switch or solenoid fault forces you to replace the pack, you replace the module too. The new pack carries no VIN, no calibration, and none of your transmission's learned adaptation, so it has to be programmed to your car before it will shift correctly. Cloning your original's data onto the donor is how we do that on the bench.
Which GM transmissions does this cover?
The RWD 6-speeds and the FWD / AWD 6-speeds. On the RWD side: 6L45 (Cadillac CTS 3.6 RWD, ATS 2.0T / 2.5) and 6L50 (Camaro V6, CTS / CTS Coupe, SRX, STS, and 2012-2016 Colorado / Canyon), plus 6L80 (Silverado / Sierra 1500, Tahoe, Suburban, Yukon, Avalanche, Camaro SS, Pontiac G8, Chevrolet SS, CTS-V) and 6L90 (Silverado / Sierra 2500HD and 3500HD, Suburban 2500, Yukon XL 2500, Escalade, Express / Savana). On the FWD / AWD side: 6T70 (Malibu, Equinox, Terrain, Impala, LaCrosse, Regal, Captiva Sport), 6T75 (Traverse, Acadia, Enclave, Impala 3.6, LaCrosse 3.6) and 6T80 (heavier FWD / AWD crossovers). Roughly 2006-2020 depending on platform. Send your VIN and a photo of the module / solenoid-pack part-number label and we confirm your exact application before you ship.
Is this the same as the 8-speed T87A service?
No. The T87A is the 8-speed Global A TCM (8L45 / 8L90 / 10L80-family era) and it is a separate box with a different clone / unlock procedure — that is our dedicated GM T87A service. This listing is specifically the 6-speed TEHCM built into the valve body / solenoid pack. If you are not sure which you have, send the VIN and we will point you to the right service.
Will the cloned module be plug-and-play?
On supported applications, yes — the donor carries your original's VIN, calibration, and adaptation, so it installs without a dealer SPS trip. Two honest caveats: the donor solenoid pack must match your family and part number, and after install the transmission needs its shift-adaptation relearn drive cycle to re-learn shift pressures and fast-idle. That relearn is normal on any transmission service and happens over a short drive.
Do you supply the donor solenoid pack?
No — you source a matching used or new solenoid-pack TEHCM (dealer / AC Delco, salvage yard, or a reputable parts recycler) and we verify compatibility before you buy or ship. Match the GM part number on the label as closely as possible; send us photos of both labels plus your VIN and a technician confirms the pair will work, free.
My transmission slips or shudders mechanically — will this fix it?
No, and we will tell you so honestly. Cloning transfers module data; it does not repair worn clutches, a worn valve body, a failing pump, or low/contaminated fluid. If your symptoms point to mechanical wear rather than a module or solenoid-pack fault, a control-module clone won't solve it — describe what the transmission is doing when you contact us and we'll help you tell the two apart before you spend anything.
What is the shift-adaptation relearn, and do I have to do it?
Yes, and it's simple. After the module goes in, the transmission relearns its shift pressures and timing over normal driving — a mix of light and moderate throttle shifts through the gear range, usually within a short drive. It's the same relearn any GM six-speed does after a fluid or valve-body service. We include clear notes; no special tool is required for the basic drive-cycle relearn.
How much is it and how does the mail-in work?
It is $250 flat. After a technician verifies your VIN and both module part-number labels, you ship the units to Auto Module Lab in Arlington, TX. We clone the data on the bench, test communication, and ship both back with tracking — return speed your choice at checkout (Standard $24.95, UPS 2-Day $54.95, or UPS overnight $94.95). Inbound shipping to the lab is customer-paid with your choice of carrier.

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Where we serve GM TEHCM Solenoid-Pack TCM Clone

Mail-in means nationwide — we accept modules from all 50 states and DC from our Arlington, Texas lab. See your state, metro, or specific vehicle:

All 51 US states + DC

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Common year + make + model combos

2012 Chevrolet Silverado 15002011 GMC Sierra 15002013 Chevrolet Tahoe2012 Chevrolet Malibu2013 Chevrolet Traverse2011 GMC Acadia2014 Chevrolet Camaro2012 Buick Enclave2010 Cadillac CTS2013 Chevrolet ImpalaAll vehicles →

Ready to ship?

$250 flat, fast turnaround. Pay now, get the shipping address by email, drop it in the mail. Your module is back on your bench within a week.

(817) 678-3252