Transmission Assembly for 2013-2015 Cadillac, Chevrolet, & GMC • Equinox, SRX, Terrain
Product Notes Read before buying
This is a 6-speed automatic transmission for vehicles with All-Wheel Drive (AWD) and the 3.6L V6 engine. It has a 3.39 final drive ratio. For 2014-2015 Cadillac SRX models, please verify your original transmission has the ID code '3UNK'. This module may require reprogramming to ensure proper function in your vehicle.
Voice or type your vehicle details and Wrenchy will confirm fitment in seconds.
Vehicle Fitment Guide
This part fits the following vehicles:
| SubmodelSUB- MODEL |
Body Style | Years | Engine | Attributes |
|---|---|---|---|---|
| Luxury | SUV | 2013 - 2015 | V6 3.6L FLEX | AWD | Automatic |
| Performance | SUV | 2013 - 2015 | V6 3.6L FLEX | AWD | Automatic |
| Premium | SUV | 2013 - 2015 | V6 3.6L FLEX | AWD | Automatic |
| Premium | SUV | 2014 - 2015 | V6 3.6L | AWD | Automatic |
| SubmodelSUB- MODEL |
Body Style | Years | Engine | Attributes |
|---|---|---|---|---|
| LT | SUV | 2013 | V6 3.6L | AWD | Automatic |
| LT | SUV | 2013 | V6 3.6L FLEX | AWD | Automatic |
| LTZ | SUV | 2013 | V6 3.6L | AWD | Automatic |
| LTZ | SUV | 2013 | V6 3.6L FLEX | AWD | Automatic |
| SubmodelSUB- MODEL |
Body Style | Years | Engine | Attributes |
|---|---|---|---|---|
| Denali | SUV | 2013 | V6 3.6L | AWD | Automatic |
| Denali | SUV | 2013 | V6 3.6L FLEX | AWD | Automatic |
| SLE | SUV | 2013 | V6 3.6L | AWD | Automatic |
| SLE | SUV | 2013 | V6 3.6L FLEX | AWD | Automatic |
| SLT | SUV | 2013 | V6 3.6L FLEX | AWD | Automatic |
| SLT | SUV | 2013 | V6 3.6L | AWD | Automatic |
Know This Transmission Before You Buy
The research behind our purchase interview — recalls, bulletins and real install economics for this transmission family:
A quick look at your own vehicle makes sure the right transmission shows up:
- Check the glovebox 'Service Parts Identification' sticker for RPO code M7U or M7X.
- Verify the 8th digit of the VIN is '3' to confirm the 3.6L V6 engine.
- Physically confirm the vehicle is AWD by checking for a rear driveshaft and rear differential.
What the install really takes — plan and budget with confidence:
Special tools this job needs:
- Engine support bar/brace
- Transmission jack
- Subframe alignment pins
- GM-compatible J2534 programming tool, GM MDI, Tech 2, or GDS 2 scan tool
- Transmission cooler flushing tool (DT-45096 TransFlow machine)
Budget for these consumables at install:
- GM Dexron VI (6) Automatic Transmission Fluid (approx. 9.5 quarts for dry fill, 5.3 to 6.3 quarts for service fill)
- Torque converter hub seal (pump seal)
- Front axle shaft seals
- Transfer case input shaft seal
- Transmission cooler line flush agent
What your vehicle’s computers will need after the swap:
What’s involved: VIN-specific programming and TCM adaptive 'Fast Learn' / 'Transmission Adaptive Values Learn'
The internal TEHCM/TCM must be programmed with the vehicle's specific VIN using GM Techline Connect (SPS2 / GDS 2). Following programming, a 'Service Fast Learn' must be performed to calibrate solenoid pressure offsets. The vehicle will not start or run correctly without this.
Pro tips for a smooth first start-up — hand them to whoever does the install:
- Torque Converter Seating: Must spin and push the converter until it drops backward three distinct times. Forcing the bellhousing bolts tight without full seating will crack the internal fluid pump.
- Subframe Alignment: Must use subframe alignment pins when re-bolting the lowered subframe to prevent steering and wheel alignment issues.
- AWD Transfer Case (PTU) Splines: Clean and grease mating splines with high-pressure grease to prevent damage or seal tears.
- Fluid Level Check Procedure: No dipstick. Must check with engine idling in Park, fluid temp at 180-200°F (or 86-122°F per Arm 2), and level plug removed on the side of the case.
- Mandatory Cooler Flush: Debris from the old failed unit must be completely flushed out to prevent immediate contamination and failure of the new unit.
Easy to get right once you know them:
- Ordering FWD instead of AWD: FWD cases lack mounting provisions and output shaft configurations for the AWD transfer case.
- Mixing Generation 1 and Generation 2: Installing a Gen 2 unit into a Gen 1 vehicle (or vice versa) results in incompatible electrical connectors and computer protocols.
- Skipping the Programming Step: Attempting to drive without VIN programming and Fast Learn calibration leads to no-crank conditions or immediate limp-mode.
- Reusing Contaminated Cooler Lines: Failing to flush or replace the cooler/radiator washes old debris directly into the new unit, destroying the solenoids.
Not issues with the units on this page — the manufacturer documented these for every transmission of this family, wherever you buy one. Handy for your installer:
🔎 Recommended at install: Clean or replace the upper or lower valve bodies; replacing the TCM/TEHCM alone will not resolve this issue.
🔎 Recommended at install: Perform a specific 'Drive Learn' procedure (driving in manual mode 'M5' above 38 mph for approximately 5 miles on flat ground).
🔎 Recommended at install: Perform a 'Transmission Adaptive Values Learn' procedure with a GM-specific scan tool and update TCM software if necessary.
🔎 Recommended at install: Ensure the transmission cooler is clean and functioning correctly; optionally install an auxiliary cooler.
🔎 Recommended at install: This Generation 2 unit features updated internal wave plates to prevent this failure, but the original failure in the buyer's vehicle may be related.
Researched from factory recalls, TSBs and OEM service data (reference unit 400-04862-5513142). Unit-specific details — mileage, condition, warranty, freight — are covered in the checkout interview.
Policies, in plain English.
Shipping & Handling
- Ships by LTL freight on a pallet — a real freight truck, not a parcel van
- Your checkout freight quote covers delivery to your door (liftgate service included for residential addresses)
- The carrier calls ahead to schedule a delivery window — someone must be present to receive it
- Typically palletized and picked up within 2–3 business days; transit time depends on distance
120-Day Warranty
This part includes a 120-day warranty.
- If the part fails within the warranty window, we'll replace it or refund per the coverage terms
- Coverage is parts-only — installation labor is not included
- Warranty covers defects — not installation errors, misuse, or damage after installation
Your pre-purchase interview reviews these exact terms with you before anything is charged.
Returns (30 Days)
We accept returns of uninstalled parts within 30 days of delivery for this part.
- Defective parts: We will replace the part or issue a refund at our discretion
- Programming: "Needs to be programmed to my vehicle" is not a valid return reason. Many modules require dealer programming — we're happy to help connect you with resources if your dealer says it's not programmable
- Return shipping: This part ships by freight (LTL) — the part price is refundable per the terms above, but shipping costs are non-refundable and return freight follows the seller's return terms. Your pre-purchase interview walks through the exact numbers before you buy
- Parts must be returned in original packaging and unmodified condition
- Poorly packaged returns that arrive damaged will not be credited
Damaged in Shipping?
Freight damage is rare — and you're fully protected when you do two things at delivery:
- Inspect before you sign — you're allowed time to look the pallet over while the driver waits
- Write any damage on the delivery receipt before signing — that one line is what makes a freight claim succeed
- Severe damage? Refuse the delivery — it goes back at no cost to you and we make it right
- Photograph the pallet before unwrapping; report concealed damage within 24 hours of delivery
We handle the carrier claim — you just help document it. Your pre-purchase interview walks through this checklist too.
Order Cancellation
Cancel before shipment for a full refund. Once the pallet has been built, a preparation charge may apply — and once the freight carrier picks it up, shipping costs are non-refundable and standard return terms apply. Your pre-purchase interview shows the exact numbers before you pay.
Expert Guides
2013-2015 Equinox, Terrain & SRX 3.6L AWD 6T70 Transmission: Problems, Identification, and Used Replacement
Identify the Gen 2 6T70, learn what causes launch shudder and wave plate failures, and discover when replacing with a used OEM unit is the smartest fix.
Read Full Guide →Related Trouble Codes (OBD-II)
29 matching guidesIf your scan tool is showing one of these trouble codes, this part is a common fix. Each guide explains the code, how to diagnose it, and exactly what to replace.
Miscellaneous Information
OEM Part Numbers:
GM: 19354264, 24256463, 24260669
Other: 3UNK
Fits Years: 2013 2014 2015
Your Go-To Place
for auto parts.
In operation since 2007. Trusted by over a million DIYers, mechanics, and body shops across all 50 states.
Confirmed Before It Ships
Every freight order is confirmed through a short guided interview — fitment, condition, delivery and warranty terms, e-signed before you're charged.
Trusted Since 2007
Nearly two decades of shipping parts to professionals & enthusiasts.
Backed By The Selling Yard
This unit ships with the selling yard's 120-day warranty. Longer plans can be requested during checkout.
What buyers are saying.
Racing Partner Videos
