Are you experiencing frustrating and unpredictable shifting issues with your Cadillac? A faulty Transmission Control Module (TCM) is often the culprit behind problems like harsh gear changes, getting stuck in a single gear, or a lit check engine light. The TCM is the electronic brain of your automatic transmission, responsible for orchestrating smooth, efficient shifts. When it fails, it can make your luxury vehicle feel unreliable and unsafe. This replacement module is the definitive solution to restore your vehicle’s original performance and driving characteristics.
This module, corresponding to GM part numbers 24222734, 24229789, and 24240283, is a direct-fit replacement for your original unit. We take the hassle and expense out of the equation by pre-programming the module specifically to your vehicle’s Vehicle Identification Number (VIN). This means you receive a part that is ready for installation right out of the box, with no need for an expensive trip to the dealership for programming or calibration. Simply provide your VIN during checkout, and we handle the rest, ensuring a seamless and correct installation process.
Your Solution for a Faulty 2005 Cadillac STS TCM
Don’t let a failing TCM sideline your Cadillac STS or XLR. Ignoring the symptoms can lead to further transmission damage and more costly repairs down the road. This module is sourced to meet or exceed original equipment specifications, providing a reliable and long-lasting repair. By replacing your faulty module, you’re not just fixing a part; you’re restoring the precise, computer-controlled operation of your transmission, ensuring longevity and peak performance.
Common Symptoms of a Failing TCM
- ✔ Erratic or Harsh Shifting: The most common sign, including banging into gear, slipping, or delayed shifts.
- ✔ Stuck in Gear: The transmission may refuse to shift up or down, often getting stuck in a “limp mode” gear (like 2nd or 3rd).
- ✔ Check Engine Light: You’ll likely see a Check Engine Light with transmission-specific Diagnostic Trouble Codes (DTCs) such as P0700, P0751, P0756, or U0101 (Lost Communication with TCM).
- ✔ Delayed Engagement: A noticeable pause after shifting from Park to Drive or Reverse before the gear engages.
- ✔ No Start Condition: In some cases, if the TCM fails to communicate its status to the Engine Control Module (ECM), the vehicle may not start.
- ✔ Incorrect Gear Display: The gear indicator on your dashboard may not match the actual gear the transmission is in.
Fitment Information:
This module is a direct replacement for the following vehicles:
- 2005 Cadillac STS (Transmission)
- 2004-2005 Cadillac XLR (Transmission; located in RH engine compartment)
Please verify your part number and provide your VIN upon purchase to ensure a perfect match and correct programming for your specific vehicle. Our pre-programmed 2005 Cadillac STS TCM is the ideal fix.
Frequently Asked Questions
Do I need to get this module programmed by a dealer?
No. The main benefit of our service is that we program the module to your car’s exact VIN before we ship it. This makes it a true plug-and-play solution, saving you time and the high cost of dealership programming.
What information do you need from me?
After you complete your purchase, we simply need you to provide us with your vehicle’s 17-digit VIN. We use this to load the correct GM-certified software and calibrations for your specific car.
Where is the TCM located on my 2005 Cadillac STS or XLR?
On these models, the Transmission Control Module is typically located in the engine compartment on the right-hand (passenger) side.
Will this fix my transmission problems for good?
This module will correct any and all issues directly caused by a faulty TCM. If your vehicle has underlying mechanical issues within the transmission (like worn clutches or a bad valve body), this part will not fix those. It’s always best to have a proper diagnosis to confirm the TCM is the root cause.
What GM part numbers does this module replace?
This unit is a direct replacement for part numbers 24222734, 24229789, and 24240283. If your original module has one of these numbers, this is the correct part for you.