
5WK33550CD Comparison
| photo | price | summary | rating |
|---|---|---|---|
![]() | $19.80 | Top Pick! Condition is Used, 2004-2005 Cadillac XLR STS Transmission Computer Control Module Unit TCM TCU OEM, FREE SHIPPING | ![]() |
![]() | $26.00 | Condition is Used, 2005 Cadillac STS Transmission Control Module P/N: 5WK33550CD, FREE SHIPPING | ![]() |
![]() | $25.00 | Top Pick! Condition is Used, 2005 Cadillac STS TCU/TCM 5WK33550CD, shipping cost = $22.40 | 99.8% |
![]() | $34.88 | Top Pick! Condition is Used, 2004 2005 Cadillac STS TCU 24232175 5WK33550CD, shipping cost = $22.40 | 99.8% |
| photo | price | summary | rating |
|---|---|---|---|
![]() | $168.99 | Condition is Remanufactured, Transmission Control Module Plug&Play 2005 Cadillac XLR 24232175 YJJJ 4.6L TCM, FREE SHIPPING | 99.3% |
![]() | $168.99 | Condition is Remanufactured, Transmission Control Module Plug&Play 2004 Cadillac XLR 24232175 YJJJ 4.6L TCM, FREE SHIPPING | 99.3% |
![]() | $168.99 | Condition is Remanufactured, Transmission Control Module Plug&Play 2005 Cadillac XLR 24232175 YJJJ 4.6L TCM, FREE SHIPPING | 99.3% |
![]() | $168.99 | Condition is Remanufactured, Transmission Control Module Plug&Play 2005 Cadillac STS 24232175 YJJJ 4.6L TCM, FREE SHIPPING | 99.3% |
![]() | $168.99 | Condition is Remanufactured, Transmission Control Module Plug&Play 2005 Cadillac STS 24232175 YJJJ 4.6L TCM, FREE SHIPPING | 99.3% |
![]() | $168.99 | Condition is Remanufactured, Transmission Control Module Plug&Play 2005 Cadillac STS 24232175 YJJJ 3.6L TCM, FREE SHIPPING | 99.3% |
![]() | $168.99 | Condition is Remanufactured, Transmission Control Module Plug&Play 2005 Cadillac STS 24232175 YJJJ 3.6L TCM, FREE SHIPPING | 99.3% |

The Cadillac 5WK33550CD Transmission Control Module (TCM) is a crucial component of the powertrain system in certain 2005 Cadillac STS models. This advanced electronic device is responsible for managing and controlling the hydraulic functions of the automatic transmission, ensuring smooth and efficient shifting between gears.
Measuring approximately 7.5 inches long, 3 inches wide, and 1 inch thick, the TCM is compact yet powerful. Its robust design is built to withstand the rigors of daily driving, providing reliable performance under various driving conditions.
The 5WK33550CD TCM is a digitally controlled unit, featuring a 16-bit microcontroller that processes data from various sensors and actuators within the transmission system. This data is then used to make real-time adjustments to the transmission's shift points, clutch application, and torque converter lock-up, among other functions.
The TCM is also equipped with an onboard diagnostic system (OBD-II) that can detect and store fault codes when transmission-related issues arise. This information can be accessed using a scan tool, allowing for efficient troubleshooting and repair.
Installation of the 5WK33550CD TCM is a straightforward process, typically involving disconnecting the old module's electrical connectors and connecting the new one in their place. Properly following the vehicle service manual's instructions is essential to ensure a successful installation.
It's important to note that the use of non-OEM transmission control modules may result in various drivability issues and could potentially damage the transmission. Therefore, it is highly recommended to use a genuine Cadillac 5WK33550CD TCM for your 2005 STS to maintain optimal transmission performance and longevity.
The Cadillac 5WK33550CD transmission control module (TCM) is a critical component of the automatic transmission system in certain Cadillac STS models manufactured in 2005. Replacing a faulty TCM can restore proper transmission function and improve vehicle performance. Below are some potential pros and cons associated with purchasing this part.
Pros:1. Improved transmission performance: A new TCM can help eliminate transmission-related issues, such as harsh shifting, delayed engagement, and erratic behavior.
2. Enhanced fuel efficiency: If the old TCM was causing the transmission to work less efficiently, replacing it could lead to improved fuel economy.
3. Smoother driving experience: A faulty TCM can cause various transmission-related problems that can negatively impact the overall driving experience. A new TCM can help restore a smoother and more enjoyable ride.
4. Increased vehicle value: By addressing transmission issues, the vehicle's value may be preserved or even increased.
Cons:1. Cost: Replacing a TCM can be an expensive repair, especially when factoring in labor costs and potential diagnostic fees.
2. Potential for additional repairs: A faulty TCM could be a symptom of a larger issue within the transmission system. Addressing this issue may require additional repairs, which can add to the overall cost.
3. Time investment: Installing a new TCM requires professional installation, which can take several hours. This could be an inconvenience for those seeking a quick repair.
Ending Conclusion:The decision to purchase a Cadillac 5WK33550CD transmission control module for a 2005 Cadillac STS depends on various factors, such as the severity of the transmission issues, the cost of the repair, and personal preferences. If the transmission problems are significantly impacting the driving experience or causing safety concerns, replacing the TCM may be a worthwhile investment. However, for those with minor issues or limited budgets, it may be worth exploring alternative solutions or seeking a second opinion from a professional mechanic.
Recommendation:If you have a 2005 Cadillac STS with confirmed transmission control module issues, it is recommended to consult with a trusted mechanic or transmission specialist for an accurate diagnosis and repair plan. They can help determine if replacing the TCM is the best course of action based on the specific circumstances of your vehicle. Additionally, consider researching potential aftermarket alternatives or used parts to help reduce the cost of the repair.
Details:
If yours doesn't for any reason please message me and you can return it!, Gog b3 there are many reasons why computers may not work.
specifications perfoelectric:
- for years: 2005
- brand: Cadillac
- mpn: 5wk33550cd
- part type: Control Transmission Module
seller perfoelectric:
- rating: 98.7%
- # reviews: 2779
- city: tampa, florida
shipping perfoelectric:
- class: standard
- carrier: usps
- type: fixed
- service: usps ground advantage
- transit: 4-9 days
general perfoelectric:
- category: Auto Parts > Electrical Components
payments perfoelectric:
- wallet: apple-pay
- credit card: mastercard
- other
offer perfoelectric:
- prices: $19.80–$168.99
- item condition:
- Used
- Remanufactured
- options: ship-to-home
- sold #: 20
- in stock #: 5
- best offers: true
- availability: in stock
- started: july 5, 2025
returns perfoelectric:
- time: 30 days
- policy: returns accepted
- paid by: seller
Also Viewed:
- 84718351: MODULE, Oem
- 23118346: CONTROL MODULE CABLE, Cadillac
- 84956402: SENSOR MODULE, Cadillac
- 208067260: FUEL CONTROL PUMP MODULE, Buick Cadillac Chevrolet
- APLCM02032001: CONTROL MODULE, Cadillac
- 25749851: MODULE UNIT, Cadillac
- 25823559: CONTROL MODULE, Chevrolet
- 15896180: CONTROL DRIVER ASSIST MODULE, Cadillac
- 25903583: CONTROL MODULE, Cadillac
- 13592806: DIGITAL MOTOR RADIO RECEIVER MODULE, General Motors
- 09377410: CONTROL MODULE, Cadillac











