Restore Smooth, Reliable Shifting to Your Chevy Cobalt
If your 2006-2010 Chevrolet Cobalt is suffering from harsh shifting, getting stuck in gear, or throwing transmission codes, the problem is often not the transmission itself, but its electronic brain. This T42 Transmission Control Module (TCM), part number 24230461, is the definitive solution. As an experienced technician, I’ve seen countless vehicle owners worry about expensive transmission rebuilds when a simple module replacement was all that was needed. We make the repair process even easier by pre-programming this module to your vehicle’s specific VIN, so it arrives ready for a true plug-and-play installation—no dealership visit required.
A Technician’s Notebook: The Cobalt That Wouldn’t Shift
A customer brought in their 2008 Cobalt, frustrated and expecting the worst. The car would barely move, stuck in what felt like third gear (limp mode), and the check engine light was on. A quick scan showed a P0700 (Transmission Control System Malfunction) code. Another shop had quoted them over $2,000 for a transmission rebuild. I suspected the TCM. We located it on the driver’s side strut tower, a common spot for these. After swapping in a VIN-programmed module—a 20-minute job—and clearing the codes, the car shifted perfectly. The customer saved a fortune and drove away with a car that felt new again. This is a classic failure scenario for the 2006-2010 Cobalt TCM.
Is Your Cobalt’s Transmission Showing These Symptoms?
A failing TCM can manifest in several ways. If you’re experiencing any of the following, this module is the likely solution:
- âś” Harsh, jerky, or erratic gear changes.
- âś” The vehicle is stuck in one gear (often called “limp mode”).
- âś” Delayed engagement when shifting from Park to Drive or Reverse.
- âś” Check Engine Light is on with codes like P0700, P0751, P0756, or other solenoid-related faults.
- âś” Complete loss of shifting capability or intermittent communication failure.
- âś” Poor fuel economy and a feeling of sluggish performance.
DIY-Friendly Installation for Your Cobalt
One of the best features of this module is how simple it is to install. Because we program it to your VIN, you can perform the replacement right in your driveway in under 30 minutes. Here’s a general guide:
- Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts and help reset the system.
- Locate the TCM: On your 2006-2010 Cobalt, the TCM is conveniently located in the engine bay, mounted to the driver’s side (LH) strut tower.
- Disconnect and Remove: Carefully unplug the electrical connectors from the old module. Then, unbolt the module from its mounting bracket.
- Install the New Module: Bolt the new, pre-programmed TCM into place and securely reconnect the electrical harnesses. You should hear a ‘click’ as they lock in.
- Final Steps: Reconnect the battery terminal. While the system may reset on its own, it’s best practice to use a basic OBD2 scan tool to clear any stored diagnostic trouble codes (DTCs) for a fresh start.
Verified Vehicle Compatibility
This T42 TCM is a direct replacement for part number 24230461 and is guaranteed to fit your 2006-2010 Chevrolet Cobalt. It is also compatible with a wide range of other GM vehicles, making it a versatile and reliable part for professional mechanics and DIYers alike. It interchanges with part numbers including 24252114, 24234503, 24234274, 24235340, and more.
Frequently Asked Questions
Do I need to take my car to the dealer after installing this?
No. This is the biggest benefit of our service. We program the module to your car’s VIN before shipping it. This makes it a true plug-and-play part, saving you the time, cost, and hassle of a dealership visit.
What is a ‘core charge’? Do I need to send my old part back?
A core charge is a deposit you pay until you return your old part. We do not require a core charge for this module. You can keep your old part, making the process faster and more convenient for you.
Will this fix a P0700 check engine light code?
Yes, in many cases. The P0700 code is a general fault code indicating the TCM has detected a problem. If the TCM itself is the source of the failure, replacing it with this programmed unit will resolve the code and the underlying issue.
Is this part difficult to install on my Cobalt?
Not at all. The installation is very straightforward for a DIYer with basic tools. The module is easily accessible on the driver’s side strut tower in the engine compartment and typically takes less than 30 minutes to replace.
What information do you need to program the module?
We only need your vehicle’s 17-digit Vehicle Identification Number (VIN). You can typically find this on your driver’s side dashboard (visible through the windshield) or on your vehicle’s registration or insurance card.