Is Your Chevy HHR Shifting Erratically?
If you’re experiencing frustrating and unpredictable transmission behavior in your Chevrolet HHR, such as harsh shifting, delayed gear engagement, or the vehicle being stuck in ‘limp mode,’ a failing Transmission Control Module (TCM) is the most likely culprit. These issues not only make driving stressful but can also lead to further transmission damage if left unaddressed. This pre-programmed T42 TCM is the definitive, hassle-free solution to restore your vehicle’s performance and your peace of mind.
Common Symptoms & Your Solution
A faulty TCM can manifest in several ways, often triggering warning lights and diagnostic trouble codes (DTCs). If you’re noticing any of the following, it’s time for a replacement:
- Harsh, jerky, or erratic gear changes
- The vehicle is stuck in a single gear (limp mode)
- Check Engine Light or Transmission Warning Light is on
- DTCs are stored, such as P0700, P0750, or other solenoid-related codes
- Failure to upshift or downshift properly
- A sudden drop in fuel economy
This unit is the direct solution for these problems. As the central computer for your automatic transmission, this professionally programmed 2006-2011 Chevy HHR transmission control module precisely manages shift points, torque converter lockup, and line pressure, ensuring your vehicle operates exactly as it was designed to from the factory.
Features & Benefits
- âś” Plug & Play Installation: This module arrives pre-programmed to your vehicle’s specific VIN. This critical step eliminates the need for expensive dealership programming or specialized tools, saving you time and money.
- âś” Restored Drivability: By replacing your failing unit, you’ll restore the smooth, predictable shifting your HHR had when it was new. Enjoy a comfortable and confident driving experience once again.
- âś” OEM-Standard Quality: Manufactured to meet or exceed strict General Motors standards, this part ensures reliable performance and long-term durability for daily driving.
- âś” Comprehensive Solution: Directly addresses common DTCs and electrical communication errors between the engine and transmission, providing a complete and lasting fix.
- âś” Warranty Protection: This unit is backed by our one-year replacement warranty.
Expert Insight: The ‘No-Programming’ Advantage
From over 20 years of experience, we’ve seen countless vehicle owners and repair shops frustrated by replacement modules that require a trip to the dealer for coding. That trip adds hundreds of dollars and significant downtime to a repair. Our VIN programming service is the solution. We flash the module with your HHR’s exact factory software before it ships. This means the 2006-2011 Chevy HHR transmission control module you receive is truly ready for installation right out of the box, turning a complex electronic repair into a straightforward mechanical one.
Frequently Asked Questions
What does ‘VIN programmed’ mean for me?
It means the module is delivered ready for installation with no additional steps required. We use your Vehicle Identification Number (VIN) to load the correct software and calibrations for your specific HHR, ensuring it communicates perfectly with your vehicle’s other computers right away.
Is this part difficult to install?
For someone with basic mechanical skills, installation is straightforward. On the 2006-2011 HHR, the TCM is typically located in the engine compartment on the driver’s side. The process involves disconnecting the battery, unplugging the electrical connectors, unbolting the old module, and installing the new one. Most installations take under 30 minutes.
Will this clear my check engine light?
This module will fix the underlying problem causing the check engine light and transmission-related codes. After installation, any stored codes will need to be cleared from your vehicle’s computer using a standard OBD-II scan tool. In many cases, disconnecting the battery during the installation will also reset the system.
How do I know this is the right part for my car?
This module is the correct fit for the 2006-2011 Chevrolet HHR. We recommend matching the service number (24252114, 24242391, 24234503, etc.) from your original part to the numbers listed in our compatibility information to guarantee a perfect match. When you order, we will use your VIN to confirm final compatibility.
Do I need to send my old part back?
No, there is no core charge for this part. You can keep your old module, eliminating the hassle and expense of return shipping.
Is this the same as a T42 TCM?
Yes. This is the GM T42 model TCM, a common control module used across a wide range of General Motors vehicles, including your 2006-2011 Chevy HHR transmission control module. It is responsible for managing the 4-speed automatic transmission.