
591-04144 Comparison
| photo | price | summary | rating |
|---|---|---|---|
![]() | $50.00 | Top Pick! Condition is Used, 84059648 DIFFERENTIAL LOCK CONTROL OEM 15-19 CADILLAC CTS 1YR WRNTY, shipping cost = $20.00 | 97.3% |
![]() | $54.19 | Condition is Used, 18 CADILLAC CTS-V DIFFERENTIAL LOCK CONTROL MODULE 84059648, shipping cost = $27.44 | 99.9% |
![]() | $85.69 | Condition is Used, Rear Suspension Actuator Module with Motor 23439966 Cadillac CTS 8405880, FREE SHIPPING | ![]() |

The Cadillac 591-04144 Chassis ECM Differential Lock is a crucial component for enhancing the traction and performance of select Cadillac CTS models from the years 2014 to 2019. This Chassis Electronic Control Module (ECM) Differential Lock plays a significant role in managing the vehicle's power distribution to the wheels, ensuring optimal grip and stability in various road conditions.
This Cadillac part is designed to work specifically with the right rear frame rail of the CTS, allowing for a seamless integration into your vehicle's existing drivetrain system. The ECM Differential Lock component is an essential element of the vehicle's sophisticated all-wheel-drive system, which actively monitors road conditions and adjusts power distribution accordingly.
The Cadillac 591-04144 Chassis ECM Differential Lock is a sophisticated electronic control unit. It utilizes advanced sensors and algorithms to analyze vehicle speed, steering angle, and wheel slip to determine when additional power is needed at the rear wheels. When required, this component sends a signal to the differential to lock and distribute torque evenly between the wheels on the same axle, preventing wheel spin and maximizing traction.
This Cadillac part is an OEM (Original Equipment Manufacturer) component, ensuring a perfect fit and reliable function for your vehicle. It is engineered to meet the highest standards of quality and durability, providing you with peace of mind and enhanced driving capabilities.
Installing the Cadillac 591-04144 Chassis ECM Differential Lock requires professional expertise and specialized tools. It is recommended to have this component replaced by a certified Cadillac technician to ensure proper calibration and function. In the event of a failure or malfunction, this part can result in reduced vehicle performance, poor handling, and even potential safety concerns.
By investing in a genuine Cadillac 591-04144 Chassis ECM Differential Lock, you are not only ensuring the optimal performance and handling of your CTS, but also providing your vehicle with the reliability and safety features that Cadillac is known for.
The Cadillac 591-04144 chassis ECM differential lock for the rear frame rail of certain CTS models (2014-2019) can be a valuable addition to your vehicle, particularly for those who frequently encounter challenging driving conditions, such as off-roading or heavy snow. Here are some potential advantages and disadvantages of purchasing this component:
Advantages:1. Enhanced traction: The differential lock improves traction by forcing both wheels on an axle to rotate at the same speed, making it easier to pull away from a standstill or maintain momentum on slippery surfaces.
2. Increased off-road capabilities: For CTS owners who enjoy off-road adventures, a differential lock can help provide better control and stability when driving on uneven terrain.
3. Improved safety: By providing better traction and stability, the differential lock can improve overall safety, especially in adverse weather conditions.
Disadvantages:1. Cost: The Cadillac 591-04144 chassis ECM differential lock is a relatively expensive upgrade, so potential buyers should consider whether the benefits outweigh the cost.
2. Complex installation: Installing the differential lock may require professional assistance, adding to the overall cost and time investment.
3. Potential compatibility issues: It's essential to ensure that this particular differential lock is compatible with your specific CTS model before making a purchase.
In conclusion, the Cadillac 591-04144 chassis ECM differential lock can be a worthwhile investment for those who frequently encounter challenging driving conditions, particularly off-road enthusiasts and those living in areas with heavy snow. However, potential buyers should carefully consider the cost, installation complexities, and compatibility issues before making a decision. Ultimately, if the benefits align with your driving needs, the differential lock can be an excellent addition to your CTS.
Details:
Chassis ecm differential lock right hand rear frame rail fits 14-19 Cts 331814 $10 shipping. Standard warranty.
specifications perfoelectric:
- for models: Cts
- for years: 2014–2019
- brand: Cadillac
- part type: Ecm Lock Frame
- conditions options: Luxury, At, Awd, Diff
- genuine oem: Yes
- ipn: 591-04144
shipping perfoelectric:
- type: fixed
- transit: 5-9 days
- service: standard
- class: standard
seller perfoelectric:
- # reviews: 486
- city: union, new jersey
- rating: 97.9%
payments perfoelectric:
- credit card: mastercard
- wallet: google-pay
- other
returns perfoelectric:
- policy: returns accepted
- time: 60 days
- paid by: buyer
offer perfoelectric:
- availability: in stock
- prices: $50.00–$85.69
- item condition: Used
- in stock #: 3
- options: ship-to-home
- best offers: true
- started: january 15, 2026
- sold #: 12
general perfoelectric:
- category: Auto Parts > Electrical Components
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