CADILLAC Automatic Transmission 400-04805 79K LKQ443947191

( Part Type: Transmission ), ( Ipn: 400-04805 ), ( Genuine Oem: Yes ), ( Manufacturer Warranty: 6 Month ), ( Warranty Length: 6 Month Warranty ), ( Vehicle Transmission Type: Auto ), ( Oe/oem Part Number: 24257603 3ada ), ( Partout Id: A-107374053 ), ( Used Engine Mileage Range: Low Mileage , 000 99, 999 Miles )

Review CADILLAC Automatic Transmission Oem 79k Miles fits ATS 2013

The **Cadillac 400-04805 2013 ATS Automatic Transmission (Part Number: LKQ443947191)** is a high-quality, factory-remanufactured automatic transmission designed to restore the performance and reliability of a 2013 Cadillac ATS equipped with a 3.6L V6 engine. This transmission is meticulously rebuilt using genuine OEM (Original Equipment Manufacturer) components and advanced remanufacturing techniques to ensure it meets or exceeds the original factory specifications. The 400-series transmission is renowned for its smooth shifting, robust construction, and durability, making it an ideal replacement for a worn or failing stock transmission. Built with precision, this unit features a fully serviced torque converter, which is pre-filled with the correct fluid and balanced for optimal performance, eliminating the need for additional adjustments. The internal components, including the planetary gears, clutch packs, and valve body, undergo rigorous cleaning, inspection, and replacement of any worn or damaged parts to guarantee seamless operation. The transmission also includes a new gasket set to prevent leaks and ensure a secure seal, while the shift solenoids and electronic controls are calibrated to deliver precise and responsive shifting under varying driving conditions. Whether used in a restoration project or as a proactive maintenance upgrade, this transmission offers the confidence of a reliable, long-lasting power delivery system, allowing the 2013 Cadillac ATS to return to its intended performance standards with confidence.

### **Pros and Cons of Buying a 2013 Cadillac CTS with a 4.0L V8 Engine, Automatic Transmission (ATS), and Transmission Part Number LKQ443947191**

#### **Pros**

1. **Strong Engine and Performance**

- The 4.0L V8 (Northstar) engine is known for its smooth power delivery, offering around **300 320 horsepower** and **280 lb-ft of torque**, providing a solid driving experience.

- The V8 is more torque-oriented than modern turbocharged engines, making it well-suited for towing light loads or highway cruising.

- The **ATS (Adaptive Transmission System)** is a 6-speed automatic with smooth shifts, though it is not as advanced as modern 8-speed or 10-speed transmissions.

2. **Classic Cadillac Design and Comfort**

- The 2013 CTS retains the **luxury styling** of the Northstar era, with a spacious cabin, high-quality materials, and a refined interior.

- The **front-wheel-drive layout** (unlike the older rear-wheel-drive Northstars) improves fuel efficiency and handling compared to heavier V8 sedans.

- The **adjustable seats, heated/ventilated seats (if equipped), and premium audio options** contribute to a comfortable ride.

3. **Reliability of the Northstar V8 (When Maintained Properly)**

- The **4.0L Northstar** is a proven engine with **fewer issues** compared to some modern turbocharged or direct-injected engines.

- If the transmission (LKQ443947191) has been properly serviced, it should shift smoothly without major drivetrain concerns.

- The **front-wheel-drive platform** reduces the risk of severe drivetrain wear compared to older rear-wheel-drive Cadillacs.

4. **Potential for Customization and Modifications**

- The **V8 engine** allows for **aftermarket tuning, exhaust upgrades, and performance modifications** if desired.

- The **ATS transmission** is not as complex as modern torqueflite or ZF units, making repairs potentially more affordable.

5. **Lower Fuel Costs Compared to Modern Turbocharged V6s/V8s**

- While not the most efficient vehicle, the **naturally aspirated V8** consumes less fuel than a turbocharged engine of similar power, especially in stop-and-go traffic.

- **MPG estimates** range from **16 20 city / 24 28 highway**, which is better than many modern muscle cars but worse than a hybrid or turbocharged sedan.

6. **Resale Value and Collectibility**

- The **2013 CTS with the Northstar V8** is a **transition model** not as rare as the last Northstars (2005 2009) but still a **well-regarded luxury sedan**.

- If maintained well, it could hold value better than a generic FWD sedan due to its **brand prestige and engine heritage**.

---

#### **Cons**

1. **Transmission Concerns (LKQ443947191 6-Speed ATS)**

- The **ATS transmission** is **notoriously unreliable** in later-model Cadillacs, especially after **100,000 miles**.

- **Slipping gears** (especially in cold weather).

- **Delayed engagement** when shifting.

- **Internal wear** leading to rough shifting or failure.

- **Torque converter problems** (whining, overheating).

- **Transmission fluid changes are critical** if not done properly, the transmission can fail prematurely.

- **Repair costs** can be **$2,000 $4,000 ** for a rebuild or replacement, depending on labor rates.

2. **Fuel Economy is Poor for a Luxury Sedan**

- The **4.0L V8** is **not fuel-efficient**, averaging **16 20 MPG city / 24 28 MPG highway**.

- This makes it **more expensive to operate** than modern turbocharged V6 or hybrid sedans.

3. **Maintenance Costs Can Add Up**

- **Timing chain tensioner replacement** (around **100,000 miles**) is a known issue **$1,000 $1,500** if not done earlier.

- **Suspension wear** (struts, bushings) is common due to the **heavier weight** of the V8.

- **Brake system upgrades** may be needed if the car is used aggressively.

- **Oil changes must be done frequently** (every **5,000 miles**) to prevent sludge buildup in the V8.

4. **Depreciation and Market Demand**

- The **2013 CTS is not a high-demand model** it sits between the **last Northstars (2005 2009) and the modern turbocharged V6/V8 models (2014 )**.

- **Buyers prefer newer Cadillacs** with **better fuel economy and tech**, making resale values **lower than expected**.

- **Not a "hot" collector car** unlike a 2006 2009 CTS-V or Escalade, this model does not have strong aftermarket support.

5. **Electronics and Modern Tech Limitations**

- The **infotainment system** (if stock) is **outdated** no Apple CarPlay, Android Auto, or modern connectivity.

- **Bluetooth and USB ports** may require aftermarket upgrades.

- **Backup camera** is often an **aftermarket add-on** (not standard).

- **Driver assistance features** (adaptive cruise, lane keep) are **not available** on this model.

6. **Weight and Handling**

- The **V8 adds significant weight**, making the car **less nimble** than a lighter V6 sedan.

- **Front-wheel drive** helps, but the **longer wheelbase** can make parking and maneuvering **less convenient** than a compact luxury car.

- **Ride comfort** is good, but **cornering feel** is not as precise as a modern AWD or RWD sedan.

7. **Environmental and Emissions Concerns**

- The **naturally aspirated V8** produces **more emissions** than modern turbocharged or hybrid vehicles.

- **Smog check issues** may arise in states with strict emissions laws.

---

### **Ending Conclusion**

The **2013 Cadillac CTS with a 4.0L V8 and ATS transmission** is a **compromise between luxury, power, and practicality**. It offers **strong engine performance, a refined cabin, and classic Cadillac appeal**, but it comes with **significant drawbacks**, particularly **transmission reliability, poor fuel economy, and high maintenance costs**.

- **Best for:** Enthusiasts who **prioritize driving dynamics, V8 power, and classic luxury** and are **willing to invest in maintenance**.

- **Worst for:** Buyers who **need fuel efficiency, modern tech, or a reliable long-term vehicle** without major repair risks.

The **biggest red flag is the transmission (LKQ443947191)** if it has **history of rough shifting, slipping, or delayed engagement**, it may be a **ticking time bomb**. A **pre-purchase inspection (PPI) is essential** to check for:

- **Transmission fluid condition** (should be **red and clean**, not burnt or dark).

- **Transmission fluid leaks** (around the torque converter or transmission mount).

- **Gear engagement smoothness** (no hesitation or jerking).

- **Timing chain tensioner** (should not be worn or loose).

- **Suspension and steering components** (struts, bushings, rack boots).

---

### **Final Recommendation**

You **find a well-documented example** with **full service records**, especially **transmission fluid changes every 30,000 50,000 miles**.

The **transmission shifts smoothly** in a **test drive** (no slipping, no hesitation).

You **budget for potential repairs** (transmission rebuild, timing chain, suspension).

You **plan to keep it for 5 7 years** and **enjoy the driving experience** over fuel efficiency.

You **get a pre-purchase inspection** from a **Cadillac specialist** (not just a generic mechanic).

The **transmission has a history of issues** (even minor ones).

You **need a reliable daily driver** with **low running costs**.

You **prioritize fuel economy** over power.

You **cannot afford unexpected repairs** (transmission rebuilds can cost **$3,000 **).

- If you **love the V8 power**, look for a **2006 2009 CTS-V** (more collectible, but **more expensive and rarer**).

- If you **want

Details:

Clear all transmission computer codes in the vehicle prior to starting or operating. Fill the transmission with OEM recommended fluids. Remove all 'cap-plugs' from lines and orifices. Replace the radiator or cooler if recommended by manufacturer.

Warranty does NOT cover labor, diagnostic, towing or rental car costs. Properly install and index the torque converter completely into front pump. Change over sensors as needed. No photos of the actual transmission are available.

Warranty does NOT cover labor, diagnostics, towing, rental car, or any other expense related to an item being defective/damaged. Remove torque converter strap. Residential Address - Load is curbside delivery ONLY. To aid in installation, you get to keep your current transmission and all attached accessories.

Most 4WD some 2WD vehicles must re-learn the shift logic to transmission after installation. Someone over 18 must be present for delivery. In certain types of Transmissions the TCM transmission controlling computer is incorporated with Valve body which may require valve to be replaced. This will ensure the cooling system is flowing.

They will not have any packaging included. ATTENTION: Stock photo shows multiple Transmissions. Transfer cases are not included with transmission from AWD vehicles. Verify the differential portion of transmission is full fluid.

This listing is for 1 Transmission ONLY, Warranty covers the transmission case, torque converter included automatic transmissions only and all internal components. Inspect and replace rear seal as needed. This is NOT a manufacturer part number, and can be disregarded. Will fit: Cadillac ATS 2013 - 2013 AT; RWD, 3.6L, w/extra cooling opt V03. Replace front seal.

Flush the transmission cooler lines and radiator with a power flush machine or an aerosol 'Cooler Kit.

part #: lkq443947191 prices

• $752.60-$1266.70

specifications autotransmissionsgo:

• for models: Ats
• for makes: Cadillac
• for years: 2013
• part type: Transmission
• ipn: 400-04805
• genuine oem: Yes
• manufacturer warranty: 6 Month
• warranty length: 6 Month Warranty
• vehicle transmission type: Auto
• oe/oem part number: 24257603 3ada
• partout id: A-107374053
• used engine mileage range: Low Mileage , 000 99, 999 Miles

offer autotransmissionsgo:

• quantity: 1
• availability: In Stock
• sold: 0
• started: March 12, 2026
• options: Ship-to-home

seller autotransmissionsgo:

• # reviews: 497054
• rating: 98.3%
• city: Janesville, Wisconsin

payments autotransmissionsgo:

• other
• wallet: Apple-pay
• credit card: Diners-club

shipping autotransmissionsgo:

• cost: $0.00
• class: Freight
• service: Flat Rate Freight
• type: Fixed

returns autotransmissionsgo:

• time: 30 Days
• paid by: Buyer
• policy: Returns Accepted

general autotransmissionsgo:

• condition: Used
• Car Truck Parts Accessories > Transmission Drivetrain > Automatic Transmission

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