Is Your Pontiac Solstice Shifting Erratically?
If you’re experiencing harsh shifting, delayed engagement, or your 2006-2010 Pontiac Solstice is stuck in one gear, a failing Transmission Control Module (TCM) is the most likely culprit. The TCM is the electronic brain of your automatic transmission, responsible for orchestrating smooth, precise gear changes. When it fails, it can cause a host of drivability issues and illuminate the check engine light, leaving you with an unreliable and frustrating driving experience.
This is a direct-fit replacement Transmission Control Module, part number 24239785, for your vehicle. We take the guesswork out of the repair by pre-programming the module to your vehicle’s specific Vehicle Identification Number (VIN). This means it arrives at your door ready for installation, with the latest software updates from General Motors, requiring no additional programming or trips to the dealership. Restore the performance and reliability of your vehicle with this simple, effective solution.
From the Diagnostic Bay
We had a 2008 Saturn Sky (which shares its platform with the Solstice) come into the shop with the classic complaint: “It slams into gear and the check engine light is on.” The customer had already spent a significant amount of money at another shop that insisted the transmission needed to be rebuilt. A quick scan showed a P0700 (Transmission Control System Malfunction) and a U0101 (Lost Communication with TCM). Before condemning a major mechanical component, we always check the module. We found the TCM, located on the left front frame rail, had signs of water intrusion on the connector. After confirming power and ground were good, we knew the module was faulty. Swapping in a VIN-programmed TCM like this one had the car shifting perfectly in under an hour, saving the customer thousands of dollars and solving the root cause of the problem.
Common Symptoms of a Failing Solstice Transmission Control Module
A failing TCM can manifest in several ways. If you’re noticing any of the following issues, it’s time to consider a replacement. Ignoring these signs can lead to further damage to your transmission’s mechanical components.
- ✔ Harsh or erratic shifting between gears
- ✔ Transmission getting stuck in a single gear (limp mode)
- ✔ Delayed engagement when shifting from Park to Drive or Reverse
- ✔ Check Engine Light or other warning lights illuminated on the dash
- ✔ Diagnostic Trouble Codes (DTCs) such as P0700, P0751, P0756, or communication codes (U-codes)
- ✔ Inaccurate gear display on the instrument cluster
- ✔ Complete loss of transmission function
Plug-and-Play Installation and Wide Compatibility
This module is a direct replacement for multiple GM part numbers, including 24239785, 24235224, and YLMU. The key benefit of our service is the VIN-specific programming. Simply provide us with your VIN during checkout, and our technicians will flash the module with the correct factory software for your exact vehicle configuration. This ensures seamless integration and proper function right out of the box.
This part will fit the following vehicles:
- 2006-2010 Pontiac Solstice (Transmission)
- 2007-2010 Saturn Sky (Transmission)
- 2007-2009 Cadillac SRX (Transmission)
- 2007 Cadillac STS (Transmission)
- 2010 Cadillac CTS (Transfer Case)
- 2010-2011 Cadillac STS (Transfer Case)
By replacing your old, faulty module, you are not just fixing a problem—you are restoring your vehicle’s original shifting logic and protecting your transmission from the potential damage caused by incorrect line pressures and shift commands. Get back on the road with confidence.
Frequently Asked Questions
Do I need to program this module?
No. This Transmission Control Module comes fully programmed to your vehicle’s VIN before it is shipped. It is ready for installation upon arrival, with no need for expensive scan tools or a trip to the dealership for programming.
What information do you need from me?
After you complete your purchase, you must provide us with your 17-digit Vehicle Identification Number (VIN). This is critical for us to load the correct software and ensure perfect compatibility with your vehicle’s systems.
How do I know if my TCM is the problem?
Common signs include erratic shifting, the vehicle entering ‘limp mode’ (stuck in one gear), a lit Check Engine Light with transmission-related codes (like P0700), and communication errors with the TCM when checked with a diagnostic scanner.
Where is the TCM located on my 2008 Pontiac Solstice?
On the Pontiac Solstice and Saturn Sky, the Transmission Control Module is typically located on the left-hand (driver’s side) front frame rail in the engine compartment.
Will this part fix a P0700 trouble code?
A P0700 code is a general fault code indicating that the TCM has detected a problem and has requested the Check Engine Light to be turned on. While a faulty TCM can cause this code, it’s essential to have the vehicle scanned for other, more specific P-codes (like P07xx) to pinpoint the exact issue. In many cases where the module itself has failed, replacing it will resolve the P0700 and related codes.
Is this a new or used part?
This is a high-quality, inspected, and tested component that has been verified for full functionality. It is programmed with the latest GM software to ensure reliable performance.