Restore Peak Transmission Performance in Your GM Vehicle
Is your 2005-2006 Chevrolet SSR or another GM vehicle suffering from erratic shifting, getting stuck in gear, or displaying a transmission-related check engine light? These are classic signs of a failing Transmission Control Module (TCM). The TCM is the electronic brain of your automatic transmission, responsible for orchestrating every gear change, managing torque converter lockup, and ensuring smooth, efficient operation. When it fails, it can cripple your vehicle’s drivability and leave you stranded. This genuine OEM-quality T42 TCM, part number 24240449, is the definitive solution to restore your transmission’s factory performance.
From the Diagnostic Bay
We once had a 2008 Sierra 1500 come in with a persistent P0752 (Shift Solenoid ‘A’ Stuck On) code. The owner had already replaced the solenoid twice at another shop, but the harsh 1-2 shift and warning light kept returning. A quick data scan showed the TCM was commanding the solenoid erratically, despite the solenoid itself being new. The internal driver circuit in the original TCM had failed. We installed one of our VIN-programmed T42 modules, cleared the codes, and the truck shifted perfectly. It’s a reminder that the problem isn’t always the component flagged by the code, but often the controller behind it.
Signs of a Failing SSR Transmission Control Module
A faulty TCM can manifest in various ways, often being misdiagnosed as an internal transmission failure. Before considering a costly transmission rebuild, check if your vehicle is exhibiting any of these common symptoms. Replacing the TCM can often be a simple, effective fix.
- ✔ Harsh or Delayed Shifting: Experiencing jarring shifts, slamming into gear, or a noticeable delay when shifting from park to drive or reverse.
- ✔ Stuck in Limp Mode: The vehicle refuses to shift out of a single gear (usually 2nd or 3rd) to prevent further damage.
- ✔ Warning Lights: The Check Engine Light or a dedicated transmission warning light is illuminated on your dashboard.
- ✔ Diagnostic Trouble Codes (DTCs): Common codes include P0700 (Transmission Control System Malfunction), U0101 (Lost Communication with TCM), or specific solenoid codes (e.g., P0751, P0756).
- ✔ Poor Fuel Economy: Inefficient shifting and torque converter operation caused by a failing module can lead to a sudden drop in MPG.
- ✔ No Shifting: The transmission may refuse to upshift or downshift at all, holding a single gear regardless of speed.
The Critical Advantage of VIN Programming
Don’t settle for a generic, unprogrammed module that requires an expensive trip to the dealership for calibration. Our T42 TCMs are expertly programmed to your vehicle’s specific Vehicle Identification Number (VIN) before they ship. This crucial step ensures:
- Plug-and-Play Installation: Simply install the module and you’re ready to go. No additional programming or setup is required.
- Latest GM Software: We load the most current software updates from General Motors, which often resolve factory bugs and improve transmission performance and longevity.
- Perfect Compatibility: VIN programming ensures the TCM communicates flawlessly with your vehicle’s Engine Control Module (ECM) and other onboard systems, eliminating compatibility errors.
This module is a direct replacement for a wide range of service numbers, including 24252114, 24234503, 24230461, 24240449, and many more, making it a versatile solution for numerous GM trucks, SUVs, and cars equipped with 4-speed automatic transmissions like the 4L60E, 4L65E, and 4L70E.
Frequently Asked Questions
What is the benefit of a VIN-programmed module?
VIN programming loads your vehicle’s specific software and calibration files onto the module before it is shipped. This makes the installation truly plug-and-play, avoiding the need for expensive programming tools or a trip to the dealership, which can save you hundreds of dollars.
Is this a difficult part to install myself?
For most DIY mechanics with basic tools, this is a straightforward installation. The TCM is typically located in the engine bay and is accessible. The process usually involves disconnecting the battery, unplugging the electrical connectors, unbolting the old module, and installing the new one. The entire job can often be completed in under 30 minutes.
Will this TCM fix a P0700 trouble code?
A P0700 code is a generic code indicating the TCM has detected a fault and has requested the Check Engine Light to be turned on. While this module can resolve the underlying issue that caused the P0700, you should use a scanner to read the specific transmission codes (like P07xx) to confirm the diagnosis. A faulty TCM is a very common cause for this code.
Do I need to return my old module? Is there a core charge?
No, there is no core charge for this part. You can keep your old module without any hassle or additional fees.
How do I know this fits vehicles other than the 2005-2006 SSR?
This T42 TCM was used across a vast range of General Motors vehicles from roughly 2006 to 2014, including the Silverado, Tahoe, Yukon, Impala, and many others. Our detailed fitment list and interchange part numbers confirm its wide compatibility. The crucial factor is the VIN programming, which tailors its operation specifically to the vehicle it’s being installed in.