Is your Chevrolet HHR suffering from harsh, unpredictable shifting or stuck in limp mode? Get your practical and unique ride back to its smooth-driving best with our VIN-programmed T42 Transmission Control Module. This is the direct-fit, plug-and-play solution to restore the dependable performance you rely on for your daily commute, without the excessive cost and hassle of a dealership visit. Stop worrying about transmission issues and get back on the road with confidence.
Common Symptoms & Your Solution
A failing TCM can make your HHR feel unreliable and unsafe to drive. If you’re experiencing any of the issues below, this module is the definitive solution. It directly addresses the electronic brain of your transmission, correcting the root cause of these frustrating problems.
- Harsh, erratic, or delayed gear shifts
- Vehicle stuck in a single gear (limp mode)
- Check Engine Light or Transmission Warning Light is on
- Diagnostic Trouble Codes (DTCs) like P0700, P0750, or other solenoid-related codes
- Failure to upshift or downshift properly
- Noticeably poor fuel economy
- Complete loss of transmission function
Features & Tangible Benefits
- ✔ Ready to Install, No Dealer Visit Needed: This module arrives pre-programmed to your HHR’s specific VIN. This means you can install it right out of the box and it will work immediately, saving you hundreds of dollars in dealership programming fees.
- ✔ Smooth, Dependable Shifting: By installing a fresh, correctly programmed module, you restore the transmission’s original crisp and efficient shifting patterns. Enjoy a smoother ride and the predictable performance you’ve been missing.
- ✔ A Lasting, Reliable Repair: Engineered to meet or exceed original GM specifications, this module is built for durability. It provides a long-term fix for common electronic transmission failures, so you can stop worrying about recurring issues.
- ✔ Broad Compatibility: This T42 TCM is a direct replacement for a wide range of service numbers, including 24252114, 24234503, 24230461, and more, ensuring a perfect match for your specific vehicle.
- ✔ Peace of Mind Guarantee: This unit is backed by our one-year replacement warranty.
Expert Insight: The DIY-Friendly Fix for Your HHR
As a technician, I’ve seen countless HHR owners get quoted massive repair bills for what turns out to be a simple electronic failure. The beauty of this pre-programmed 2006-2011 HHR Transmission Control Module is that it turns a complex, expensive problem into a manageable, affordable DIY job. The module is typically located in the engine compartment on the LH side, making it accessible. In under 30 minutes, with basic hand tools, you can swap the unit and have your car running perfectly again. It’s one of the most satisfying and cost-effective repairs an HHR owner can perform.
Frequently Asked Questions
What does a Transmission Control Module do on an HHR?
The TCM acts as the computer for your automatic transmission. It receives data from various sensors on the engine and vehicle to control exactly when and how the transmission shifts gears, ensuring smooth operation and optimal fuel efficiency.
Is this TCM difficult to install on my 2008 HHR?
No, installation is designed to be straightforward for a DIYer with basic mechanical skills. The module is located in the engine compartment. Simply disconnect the battery, unplug the electrical connectors from the old module, unbolt it, and install the new one in its place. The entire process typically takes less than 30 minutes.
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 underlying issue causing the P0700, it’s always wise to have the specific transmission codes read by a scanner to confirm the diagnosis. This part is the direct solution for a wide range of internal TCM failures and solenoid circuit faults.
Do I need to send my old module back?
No, there is no core charge for this part. You can keep your old module, recycle it, or dispose of it at your convenience, making the transaction simple and hassle-free.
How do I know this is the correct 2006-2011 HHR Transmission Control Module for my vehicle?
This module fits all 2006-2011 Chevrolet HHR models with an automatic transmission. We program it using the VIN you provide at checkout, which guarantees it is configured perfectly for your vehicle’s specific options and software requirements.
What happens if I don’t replace a failing TCM?
Continuing to drive with a faulty TCM can lead to more severe and expensive mechanical damage to your transmission. Poor shifting can cause excessive wear on clutches and bands, and in some cases, can leave you stranded. Replacing it promptly is a critical preventative measure.