Is Your Pontiac G5 Experiencing Transmission Problems?
If your 2007-2010 Pontiac G5 is suffering from harsh shifting, getting stuck in gear, or has an illuminated Check Engine Light, a failing Transmission Control Module (TCM) is a likely culprit. The TCM is the electronic brain of your automatic transmission, responsible for orchestrating every gear change, managing torque converter lockup, and monitoring system pressures. When it fails, it can cause a cascade of performance issues that make your vehicle unreliable and unsafe to drive. This genuine quality T42 TCM, part number 24239926, is the definitive solution to restore your vehicle’s transmission to its original, smooth-operating condition.
From the Diagnostic Bay
We had a 2008 Pontiac G6 come into the shop with classic symptoms: stuck in 3rd gear (limp mode) and a P0700 trouble code. The owner had already replaced two shift solenoids based on a generic code reader’s suggestion, but the problem persisted. After a quick scan with our professional equipment, we saw communication errors with the TCM. Instead of throwing more parts at it, we identified the root cause: the original TCM had failed internally. We installed one of our VIN-programmed T42 modules, cleared the codes, and the car was shifting perfectly within 30 minutes. This saved the customer hundreds of dollars in unnecessary parts and labor by correctly diagnosing the problem the first time.
Diagnosing a Faulty Pontiac G5 TCM
A failing TCM can manifest in various ways, often mimicking the symptoms of internal transmission failure. Before condemning your transmission, it’s crucial to consider the module itself. A faulty TCM can send incorrect signals to the solenoids or fail to process data from sensors, leading to poor performance. Our replacement module is engineered to resolve these communication breakdowns and restore proper function.
Common Symptoms of TCM Failure
- ✔ Erratic Shifting: Your vehicle may shift harshly, slam into gear, or shift at the wrong times.
- ✔ Delayed Engagement: A noticeable delay when shifting from Park into Drive or Reverse.
- ✔ Stuck in Limp Mode: The transmission may default to a single gear (usually 2nd or 3rd) to prevent further damage.
- ✔ Warning Lights: The Check Engine Light or a dedicated transmission warning light will illuminate on your dashboard.
- ✔ Diagnostic Trouble Codes (DTCs): Common codes include P0700 (Transmission Control System Malfunction), U0101 (Lost Communication with TCM), and various solenoid-specific codes (e.g., P0751, P0756).
- ✔ Poor Fuel Economy: Inefficient shifting and torque converter operation can lead to a significant drop in gas mileage.
- ✔ No Communication: A scan tool may be unable to communicate with the TCM, indicating a complete module failure.
The Plug-and-Play Solution: VIN Programming Included
One of the biggest hurdles in replacing a modern vehicle module is the need for expensive dealership programming. We eliminate this step entirely. When you order from us, you provide your vehicle’s VIN, and we program the module with the latest GM software specific to your Pontiac G5. This ensures that the TCM is ready for immediate installation right out of the box. It will recognize your vehicle’s specific configuration, engine, and transmission type, guaranteeing seamless integration and optimal performance without any additional setup.
Key Features & Benefits
- ✔ Pre-Programmed to Your VIN: Arrives ready for a true plug-and-play installation, saving you time and money on dealership fees.
- ✔ Restores Smooth Operation: Corrects harsh shifting, delayed engagement, and other common transmission complaints.
- ✔ Clears Persistent DTCs: A correctly programmed module resolves communication errors and false solenoid codes caused by a failing original unit.
- ✔ OEM-Standard Quality: Built to meet or exceed General Motors’ specifications for reliability and longevity, backed by a one-year warranty.
- ✔ Wide Compatibility: This T42 module is a direct replacement for a vast range of GM vehicles, making it a versatile and reliable part. Interchangeable with part numbers: 24252114, 24234503, 24230461, 24234274, 24235340, 24235754, 24238856, 24239224, 24240400, 24241806, and more.
Installation is Simple and Straightforward
For the 2007-2010 Pontiac G5, the TCM is conveniently located on the driver’s side strut tower in the engine bay. The replacement process can typically be completed in under 30 minutes with basic hand tools. Simply disconnect the negative battery terminal, unplug the electrical connectors from the old module, unbolt it, and install the new one in its place. Reconnect the connectors and the battery, and you’re ready to go. We recommend using a scan tool to clear any stored codes after installation for a clean slate.
Frequently Asked Questions
Do I need to take this part to a dealer for programming?
No. This Transmission Control Module is pre-programmed to your vehicle’s specific VIN before it ships. It is ready for installation right out of the box, with no additional programming required.
Is this a new or used part?
This is a high-quality, OEM-standard replacement part that has been thoroughly tested and prepared to ensure it meets strict performance criteria. It is backed by our one-year warranty for your peace of mind.
Where is the TCM located on my 2008 Pontiac G5?
On the Pontiac G5 (2007-2010), the TCM is typically mounted on the driver’s side strut tower in the engine compartment, making it easily accessible for replacement.
Will this fix a P0700 trouble code?
A P0700 code is a general fault code indicating the TCM has detected a problem. While this module often resolves the root cause of a P0700, it’s essential to diagnose any other specific codes that are present. In many cases, a faulty TCM is the source of the issue.
What is a core charge?
There is no core charge for this part. You are not required to send your old, faulty module back to us, saving you time and return shipping costs.