Restore Peak Transmission Performance in Your Chevrolet HHR
Is your 2006-2011 Chevrolet HHR suffering from erratic shifting, getting stuck in gear, or displaying a check engine light with transmission codes? These are classic signs of a failing Transmission Control Module (TCM). The TCM is the electronic brain of your automatic transmission, responsible for orchestrating smooth gear changes, managing torque converter lockup, and ensuring overall drivetrain efficiency. When it fails, it can lead to frustrating and potentially damaging driving conditions. This genuine quality T42 TCM, service part number 24235732, is the definitive solution to restore your vehicle’s factory performance and reliability.
We had a 2009 HHR come into the shop that was stuck in what the owner called ‘fail-safe’ mode—it wouldn’t shift out of 3rd gear. After pulling the codes, we saw a P0700 (Transmission Control System Malfunction) and a specific solenoid circuit error. Instead of chasing down individual solenoids, experience pointed us to the TCM. The internal circuits on these T42 modules can develop micro-fractures from heat cycles over the years, causing intermittent communication failures. We installed one of our VIN-programmed modules, cleared the codes, and the car shifted perfectly on the test drive. The customer was back on the road in under an hour without a costly trip to the dealership.
Diagnosing a Faulty 2006-2011 HHR TCM
A failing TCM can manifest in various ways, often mimicking other transmission problems. If you’re experiencing any of the following symptoms, your module is the most likely culprit. Replacing it promptly can prevent further wear and tear on your transmission’s mechanical components.
- ✔ Harsh, delayed, or unpredictable gear shifts.
- ✔ Vehicle enters ‘limp mode,’ often stuck in 2nd or 3rd gear.
- ✔ The Check Engine Light or Transmission Warning Light is illuminated.
- ✔ Diagnostic Trouble Codes (DTCs) such as P0700, P0750, P0753, P0758, or other solenoid-related codes are present.
- ✔ Complete failure to shift up or down.
- ✔ Noticeable decrease in fuel economy.
- ✔ Intermittent loss of communication with the TCM on a scan tool.
The Plug-and-Play Solution: VIN Programming Included
Forget about expensive dealership visits and additional programming fees. This module comes pre-programmed to your vehicle’s specific Vehicle Identification Number (VIN). This critical step ensures that the TCM has the correct software and calibrations for your HHR’s specific configuration, including engine size and axle ratio. This process guarantees seamless communication with the Engine Control Module (ECM) and other vehicle systems right out of the box. Simply install the module, and you’re ready to go.
Installation and Compatibility
For the 2006-2011 Chevrolet HHR, the TCM is typically located in the engine compartment on the driver’s side, near the strut tower. Installation is a straightforward process that can be completed with basic hand tools in under 30 minutes. Always disconnect the battery before starting the replacement to ensure the vehicle’s electronic systems are reset. After installation, use a capable scan tool to clear any stored DTCs.
This module is a direct replacement for a wide range of GM vehicles using the T42 controller and is interchangeable with numerous part numbers, including: 24252114, 24234503, 24230461, 24234274, 24235340, 24235754, 24238856, 24239224, 24256960, and many more. It’s the reliable choice for getting your car back to optimal condition.
Frequently Asked Questions
Do I need to have this module programmed by a dealer?
No. We pre-program the module to your vehicle’s VIN before shipping. This makes it a true plug-and-play installation, saving you time and money on dealership programming fees.
Where is the TCM located on my 2008 Chevy HHR?
On the 2006-2011 Chevrolet HHR, the Transmission Control Module is found in the engine compartment, typically mounted on the driver’s side (LH) near the strut tower or under the air cleaner box.
Will this fix a P0700 trouble code?
A P0700 code is a general transmission fault code, indicating that the TCM has detected a problem. While this module often resolves the root cause of a P0700, it’s essential to check for other specific codes (like solenoid circuit faults) that point directly to an internal TCM failure.
Is there a core charge for my old part?
No, there is no core charge required for this module. You can keep your old part without the hassle of returning it.
What is the warranty on this part?
This transmission control module comes with a one-year warranty, ensuring peace of mind and guaranteeing its quality and durability for your daily driving needs.