Tired of Erratic Shifting and Warning Lights in Your HHR?
Is your Chevrolet HHR struggling with harsh gear changes, getting stuck in limp mode, or flashing a check engine light? These are classic signs of a failing Transmission Control Module (TCM). A faulty TCM can make your daily drive frustrating and unpredictable, turning a reliable vehicle into a source of constant stress. This pre-programmed T42 TCM is the definitive solution, designed to restore the smooth, reliable performance you depend on and get you back on the road with confidence.
Common Symptoms & Your Solution
If you’re experiencing any of the issues below, a failing TCM is the likely culprit. This module is engineered to directly resolve these problems:
- Harsh, delayed, or erratic shifting between gears
- The vehicle is stuck in a single gear (limp mode)
- Transmission or Check Engine warning lights are illuminated
- Diagnostic Trouble Codes (DTCs) such as P0700, P0750, or other solenoid-related faults
- Poor acceleration and decreased fuel economy
- Complete failure to shift or engage gears
Installing our 2006-2011 HHR transmission control module is the most effective way to permanently fix these issues and restore your vehicle’s factory shift patterns and performance.
Features & Benefits
- ✔ Plug-and-Play Installation: This module arrives pre-programmed to your HHR’s specific Vehicle Identification Number (VIN). This eliminates the need for expensive dealership programming, saving you time and money.
- ✔ Restored Performance: By precisely managing shift points, torque converter lockup, and line pressure, this TCM ensures your transmission operates smoothly and efficiently, just like it did from the factory.
- ✔ OEM-Quality & Durability: Built to meet or exceed strict General Motors standards, ensuring long-lasting reliability for your daily driver. This isn’t just a patch; it’s a permanent repair.
- ✔ Solves Common DTCs: Engineered to resolve persistent transmission-related trouble codes, helping you clear that check engine light for good.
- ✔ Warranty Protection: This unit is backed by our one-year replacement warranty.
Expert Insight: Why VIN Programming is Non-Negotiable
In modern vehicles like your HHR, the TCM doesn’t just shift gears; it’s in constant communication with the Engine Control Module (ECM) and other vehicle systems. Our VIN-specific programming ensures this digital handshake is perfect. We load the latest GM software updates for your exact vehicle, which often corrects factory flaws you didn’t even know existed. Skipping this step with a generic, non-programmed module is a recipe for continued shifting problems and compatibility errors. We handle it for you, so it works correctly right out of the box.
Don’t let a faulty TCM dictate your driving experience. By choosing the correct, fully programmed 2006-2011 HHR transmission control module, you are investing in a reliable and lasting repair. This part is also a direct replacement for service numbers 24252114, 24234503, 24256960, and more.
Frequently Asked Questions
What does the Transmission Control Module do?
The TCM acts as the brain for your automatic transmission. It uses data from various sensors to control shift solenoids, regulate hydraulic pressure, and ensure smooth, efficient gear changes for optimal performance and fuel economy.
Is this installation difficult for a DIY mechanic?
For most HHR models, the TCM is located in the engine compartment on the driver’s side and is relatively easy to access. The installation typically takes under 30 minutes with basic hand tools. Since our module is pre-programmed, the most complex part of the job is already done for you.
Will this part fit other GM vehicles?
Yes, this T42 TCM is compatible with a wide range of 2006-2014 GM vehicles, including the Cobalt, G6, Impala, and Saturn Vue. However, the programming is specific to the VIN you provide, so it’s crucial to order the correct part for your exact make and model.
Do I need to send my old part back?
No, there is no core charge for this 2006-2011 HHR transmission control module. You can keep your old part without any additional fees or hassle.
Will this fix my 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 the P0700, it’s essential to diagnose any other related codes (like solenoid faults) to ensure a complete repair. In most cases, replacing a faulty TCM will clear these codes after installation.