Stop Struggling with Poor Shifting in Your HHR
Is your 2006-2011 Chevrolet HHR fighting you on every shift? Experiencing sudden jerks, delayed gear engagement, or getting stuck in limp mode is more than just an annoyance—it’s a sign that your transmission’s brain is failing. This pre-programmed T42 Transmission Control Module (TCM) is the definitive solution, designed to restore the smooth, reliable performance your vehicle had when it was new. Forget about expensive dealership visits for programming; this module arrives ready for a straightforward, plug-and-play installation, getting you back on the road with confidence.
Common Symptoms & Your Solution
A failing TCM can make your HHR feel unpredictable and unsafe. If you’re noticing any of the following issues, this module is the component you need to fix the problem at its source:
- Harsh, erratic, or delayed shifting
- Vehicle is stuck in one gear (limp mode)
- Check Engine Light or Transmission Warning Light is on
- Diagnostic Trouble Codes (DTCs) like P0700, P0750, or other solenoid-related codes
- A sudden drop in fuel economy
- The transmission seems to slip between gears
This module directly replaces OEM part number 24240449 and other service numbers, providing a reliable and permanent fix for these frustrating electronic issues.
Features & Benefits
- ✔ VIN-Programmed for Your HHR: We program the module to your vehicle’s specific VIN before shipping. This ensures perfect communication with your engine and other systems for a true plug-and-play installation, eliminating the need for a trip to the dealer.
- ✔ Restores Smooth Performance: By precisely managing shift points, torque converter lockup, and line pressure, this TCM brings back the crisp, predictable shifting you expect from your automatic transmission.
- ✔ Eliminates Fault Codes: A new, correctly programmed module is the key to resolving persistent transmission-related DTCs and turning off that nagging Check Engine Light.
- ✔ Built to OEM Standards: Engineered for durability and reliability, this module is built to meet or exceed original equipment specifications, ensuring long-lasting performance for your daily driver.
- ✔ No Core Charge Required: Keep your old part without any extra hassle or hidden fees. The price you see is the price you pay.
- ✔ Peace of Mind Guarantee: This unit is backed by our one-year replacement warranty.
Expert Insight: Why Pre-Programming is Non-Negotiable
In vehicles like the Chevy HHR, the TCM doesn’t just change gears; it’s in constant communication with the Engine Control Module (ECM) and other vehicle electronics. An unprogrammed, off-the-shelf module simply won’t work—the car won’t recognize it. Our VIN programming service syncs the module to your car’s unique identity, ensuring all systems work together seamlessly from the moment you plug it in. This is the same process a dealership performs, but we do it for you, saving you hundreds in labor and programming fees.
By installing a quality, pre-programmed 2006-2011 HHR Transmission Control Module 24240449, you are not just replacing a part; you are restoring your vehicle’s core functionality and your confidence behind the wheel. Don’t let a faulty TCM dictate how your car drives. Take control with this simple, effective solution.
Frequently Asked Questions
Will this TCM fit my 2008 Chevy HHR?
Yes, this Transmission Control Module is a direct-fit replacement for all 2006, 2007, 2008, 2009, 2010, and 2011 Chevrolet HHR models equipped with an automatic transmission.
What does ‘VIN Programmed’ actually mean for me?
It means the module arrives at your door ready to install. We load it with the latest GM software specific to your vehicle’s VIN. This allows it to work perfectly with your HHR’s engine and electronics right out of the box, saving you the time, cost, and hassle of a dealership visit for programming.
Is this a difficult part to install myself?
For most DIYers with basic tools, this is a straightforward installation. The TCM on the HHR is located in the engine compartment on the driver’s side. The process typically involves disconnecting the battery, unplugging the electrical connectors, unbolting the old module, and installing the new one. It can often be completed in under 30 minutes.
Do I need to send my old TCM back?
No, there is no core charge for this part. You can keep, discard, or recycle your old module without any obligation to return it to us.
Will this module 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 code (such as internal failure), you should always diagnose any other codes that appear alongside it. Replacing a faulty TCM is a very common fix for this issue.
Is this the correct part for service number 24240449?
Yes, this is the correct replacement for the 2006-2011 HHR Transmission Control Module 24240449 and is also interchangeable with a wide range of other GM service numbers for the T42 module.