Used Cadillac Transmissions For Sale

669
verified Cadillac transmissions
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Up to 3 yrs
extended warranty available
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shipment

Used Cadillac Transmissions For Sale

669 verified used Cadillac transmissions in stock across 1991–2024 — 6L80 / 6L45 / 6L50 6-Speed Automatic, 8L90 / 8L45 8-Speed Automatic, 10L80 / 10L90 10-Speed Automatic, 4L60-E / 4L65-E 4-Speed Automatic and more. Every unit is VIN-matched to your vehicle, ASE-tested by certified technicians, photographed before shipment, and backed by a warranty (standard term by model year, extended coverage up to 3 years) plus 30-day money-back. Free freight nationwide.

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Warranty On Every Unit
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Photos Before Shipment
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ASE-Tested & Verified
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Free Nationwide Shipping
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30-Day Money-Back
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Browse Cadillac Transmissions by Year

Our Cadillac transmission inventory covers every model year from 1991 through 2024. Year-specific pages are not yet live for Cadillac — text us your VIN and we will match the exact transmission for your vehicle within minutes.

2024
2023
2022
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2020
2019
2018
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1991

Cadillac Transmissions We Cover

Real Cadillac transmissions from our warehouse, tested and ready to ship. A single model year can ship with more than one transmission, so match by transmission code rather than by vehicle — text us your VIN and we will confirm it.

Used Cadillac 6L80 / 6L45 / 6L50 6-Speed Automatic transmission
6L80 / 6L45 / 6L50 6-Speed Automatic
Escalade, ESV and EXT (2007–2014), CTS (2008–2015), STS (2008–2011), SRX RWD, ATS (2013–2015). Our deepest Cadillac line — the 6L80 behind the Escalade V8 and the lighter 6L45 and 6L50 behind the CTS and ATS, each listed by engine and RWD or AWD.
Used Cadillac 8L90 / 8L45 8-Speed Automatic transmission
8L90 / 8L45 8-Speed Automatic
Escalade and ESV (2015–2020), CTS and ATS (2016–2019), CT4 and CT5 2.0T, CT6 (2016–2020). The Escalade 6.2 runs the 8L90; the 2.0T and 3.6 sedans run the 8L45 (Opt M5N) — same architecture, different torque rating, and they do not swap.
Used Cadillac 10L80 / 10L90 10-Speed Automatic transmission
10L80 / 10L90 10-Speed Automatic
Escalade and ESV (2021+), CT4 2.7T and CT5 3.0TT (Opt MQA), CT5-V and CT4-V, CT6 (2019–2020). The current ten-speed — listings say 4x2 or 4x4 on the Escalade and RWD or AWD on the sedans.
Used Cadillac 4L60-E / 4L65-E 4-Speed Automatic transmission
4L60-E / 4L65-E 4-Speed Automatic
Escalade, ESV and EXT (1999–2006), Fleetwood and Brougham RWD (1991–1996). The RWD four-speed of the first two Escalade generations — the 6.0 trucks from 2002 run the heavier 4L65-E and it is listed by 4x2 or 4x4.
Used Cadillac 4T80-E Northstar 4-Speed Transaxle transmission
4T80-E Northstar 4-Speed Transaxle
DeVille, DTS, Seville, Eldorado, Concours (1993–2011), plus the 4T60-E behind the 4.9 V8 in the 1991–1993 cars. The FWD transaxle of the Northstar era — listings carry the final-drive ratio and option code (2.73 FP3, 2.97 F79, 3.11 F43) because the ratios do not interchange.
Used Cadillac 6T70 / 6T75 / 6T80 6-Speed Transaxle transmission
6T70 / 6T75 / 6T80 6-Speed Transaxle
SRX (2010–2016), XTS (2013–2019) FWD and AWD. The transverse six-speed behind the 3.6 V6 — the XTS units are listed by final-drive ratio (2.77 D70 or 3.16 GW5) and by engine (LFX or LF3 twin-turbo), and the AWD unit carries the transfer output the FWD unit lacks.
Used Cadillac 9T50 / 9T65 / 8T45 Transaxle transmission
9T50 / 9T65 / 8T45 Transaxle
XT4 (2019+), XT5 (2017+), XT6 (2020+) FWD and AWD. The current crossover transaxles — the XT5 moved from the 8T45 eight-speed to the 9T65 nine-speed in 2020, and the XT4 2.0T runs the 9T50. Listed by FWD or AWD on every unit.
Used Cadillac 5L40-E / 5L50-E 5-Speed Automatic transmission
5L40-E / 5L50-E 5-Speed Automatic
CTS (2003–2007), SRX (2004–2009), STS (2005–2007), Catera (1997–2001). The longitudinal five-speed of the first Sigma-platform cars — the 3.2 and 3.6 V6 units differ from the 4.6 Northstar V8 unit, and the SRX AWD unit is its own part.
Used Cadillac TR-6060 / Aisin AY6 6-Speed Manual transmission
TR-6060 / Aisin AY6 6-Speed Manual
CTS-V (2009–2019), ATS-V (2016–2019), ATS 2.0T and 3.6 (2013–2019), CTS 2.0T. The Tremec TR-6060 behind the supercharged and twin-turbo V cars and the Aisin AY6 behind the standard ATS — listed by engine and drivetrain.
Cadillac transmission inventory row
More Cadillac Transmissions
Plus Escalade Hybrid two-mode units, Commercial Chassis funeral-coach and limousine builds, STS AWD, Allante, Catera, XLR and ELR units, and CTS-V 6L90 automatics — text us your VIN.
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Why Buy a Used Cadillac Transmission from Auto Power Source

Cadillac has run four different transmission layouts at once — a longitudinal RWD automatic in the Escalade, CTS, ATS and CT-series, a transverse transaxle in the DeVille, SRX, XTS and XT crossovers, an AWD version of each, and a Tremec manual in the V cars — and the same year and model can carry two of them depending on engine. Our 669 verified Cadillac transmissions cover the whole run: the 6L80 and 8L90 behind the 2007–2020 Escalade, the 10L80 and 10L90 in the current Escalade and CT-series, the 6L45, 6L50 and 8L45 in the CTS and ATS, the 4L60-E in the first two Escalade generations and the RWD Fleetwood, the 4T80-E behind every Northstar DeVille, Seville, Eldorado and DTS, the 6T70 and 6T80 in the SRX and XTS, the 9T50, 9T65 and 8T45 in the XT4, XT5 and XT6, the 5L40-E in the first CTS, SRX and STS, and the TR-6060 and Aisin manuals in the V cars and ATS.

Every Cadillac transmission we sell has been pulled from a low-mileage donor vehicle, cataloged by VIN, and held in our climate-controlled warehouse pending sale. Each unit goes through our six-step inspection — VIN-matching against the donor and against your vehicle, Shift-Testing through every gear under load, noise verification, full visual inspection of case, pan and bellhousing, multi-angle photography for your approval, and palletized freight. 8L90 and 10L80 units get a valve-body and solenoid check under load, and AWD and 4x4 units have the transfer output inspected. Rejected units never reach the buyer.

You pay a fraction of dealer-new pricing for the same GM engineering, ship free on a heavy-duty pallet anywhere in the continental U.S., and have 30 days from delivery to return for any reason — no restocking fees. The warranty printed on the listing — with extended coverage up to 3 years available — covers you if anything goes wrong after install. Across 100K+ engines and transmissions in stock, we hold a 0% fitment-related return rate.

📱 Fastest way to match: text us your VIN, get options in minutes.Text Your VIN →

Your Cadillac Transmission Options: Compared

Most Cadillac owners face four real choices when the transmission fails:

← Swipe sideways to see all columns →
Option Cost Reliability Warranty Fitment Match
Used OEM (this collection) $$$ Best Value High — tested Included VIN-matched
New OEM (dealer) $$$$$ 2-4× more High Manufacturer Exact
Aftermarket / Reman $$$$ Varies 6-12 mo May adapt
Junkyard $ Cheapest Unknown None DIY

Tested used OEM hits the sweet spot — same engineering as new, fraction of the cost.

Cadillac Transmission Buying Guide

5 things to verify before buying a used Cadillac transmission:

  1. Match the drivetrain first — RWD, AWD, 4x2 and 4x4 are different units. On the Escalade the 4x4 transmission carries the transfer-case output and the 4x2 does not; on the CTS, ATS, XTS and XT crossovers the AWD unit has the power take-off the RWD or FWD unit lacks. Every listing on this page says which, and a two-wheel-drive unit will not bolt into an all-wheel-drive car.
  2. Engine decides the transmission as much as the model. The same-year CTS came with the 8L45 behind the 2.0T and 3.6 and the 8L90 behind the CTS-V, the XTS unit differs between the LFX 3.6 and the LF3 twin-turbo, and the CT4 runs an eight-speed behind the 2.0T and a ten-speed behind the 2.7T. The engine code is VIN digit 8 and the listings quote it — match it.
  3. Watch the final-drive ratio on the transaxles. Northstar 4T80-E units and XTS 6T70 units are listed by axle ratio and option code — 2.73 (FP3), 2.97 (F79), 3.11 (F43) on the DeVille and Seville, 2.77 (D70) or 3.16 (GW5) on the XTS. The ratio lives inside the transaxle, so a unit with the wrong ratio will run but will not match your speedometer or shift points.
  4. Escalade generations do not cross over. The 1999–2006 trucks run the 4L60-E and 4L65-E, the 2007–2014 trucks the 6L80, the 2015–2020 trucks the 8L90, and the 2021-on trucks the 10L80 — and a 2019 unit built from 07/31/18 differs from one built before it. Match the year and the build date if the listing carries one.
  5. Confirm the match with your own VIN before you order. Your VIN settles the transmission code, drivetrain and build split in one step. Text it to +1-307-441-5554 and we will confirm in writing exactly which unit fits your vehicle before you pay.

Our ASE-certified technicians verify every one of these points against your VIN before any unit ships.

📞 Need help choosing the right Cadillac transmission? Talk to our team live.Call 1-877-313-8995

Frequently Asked Questions

What is the warranty on a used Cadillac transmission?
Every Cadillac transmission ships with a warranty included — the standard term follows the model year (1 month for 1990, 3 months for 1991–2000, 6 months for 2001 and newer) and is printed on each product page. Extended coverage of up to 3 years is available at checkout.
What does ASE-tested mean?
ASE-certified technicians compression-test every cylinder and run leak-down evaluation on engines; transmissions are Shift-Tested through all gears under load. Plus noise & smoke verification, visual inspection, and multi-angle photography before shipment.
How long until delivery?
Prep and ship time is 3-5 business days. Transit time is 2-3 business days after dispatch via freight carrier — typically 5-8 business days from order to delivery.
Can I see photos before I buy?
Yes. Multi-angle photos of the actual unit are sent before payment. If you do not approve the photos, you get every dollar back — no restocking fees, no return freight charges.
Do I need my VIN?
Yes — essential on Cadillac. The same model year can carry an eight-speed or a ten-speed depending on engine, RWD and AWD units differ at the transfer output, and the Northstar and XTS transaxles are listed by axle ratio. Text your VIN to +1-307-441-5554 and we will confirm the exact transmission.
Will a Chevy or GMC transmission fit my Cadillac?
Often yes, when the family, engine and drivetrain match. The Escalade shares its 6L80, 8L90 and 10L80 with the Tahoe, Yukon and Silverado, and the XT5 shares its transaxle with the GMC Acadia and Chevy Blazer — but the CTS, ATS and CT-series units are tuned to the Cadillac engines and the V cars carry their own torque ratings. We match on donor VIN, so text your VIN and we will confirm which donors are valid.
Why cheaper than dealer new?
Used OEM from low-mileage donor vehicles. Same Cadillac engineering as factory new at a fraction of the cost — dealers are typically 2-4x our pricing, and many older units are no longer available new at all.
When can I reach customer service?
Call 1-877-313-8995 or text +1-307-441-5554 during the business hours shown in the site footer, or email info@autopowersource.com any time.
🏆 Earn $500 with Our Rewards Program
Every Cadillac transmission you buy earns rewards. 10 orders (yours or referred) = $500 cash credit. Silver, Gold, and Platinum tiers with discounts, priority support, and private inventory access.
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100K+
Engines+Transmissions In Stock
0%
fitment-related returns
All 50
states covered, free freight
36
brands covered

Our 6-Step Inspection & Shipping Process

Every Cadillac transmission we ship has been through these six steps:

1. VIN-Matching
We match the donor VIN to your VIN to confirm the transmission family, RWD vs AWD or 4x2 vs 4x4, engine pairing, and axle ratio on the transaxles.
2. Tested & Verified
ASE-certified technicians Shift-Test every gear under load. 8L90 and 10L80 units get a valve-body and solenoid check; AWD and 4x4 units have the transfer output inspected.
3. Noise & Smoke Verification
Units are run to verify normal mechanical sound and clean operation — catches internal wear static tests miss.
4. Visual Inspection
Every accessible component is inspected: turbos, manifolds, valve covers, housings, accessories, sensor harnesses.
5. Photograph & Catalog
Multi-angle photos sent to you BEFORE we ship for your approval.
6. Palletize & Ship
Strapped on a heavy-duty wooden pallet, shipped via freight at no charge.

Our Photos-Before-Shipment Guarantee

Before any transmission leaves our warehouse, we send you multi-angle photographs. You approve. If you do not approve, you get every dollar back — no questions, no restocking fees, no return freight charges. On top of 30-day money-back and the warranty included with every unit. Browse all 669 Cadillac transmissions below.

✉ Email Us at info@autopowersource.com
No match? Text VIN →