If your 2006 Pontiac Pursuit is suffering from erratic shifting, getting stuck in gear, or has the check engine light glaring at you, a failing Transmission Control Module (TCM) is the most common culprit. As a mechanic with over two decades of experience under the hood, I’ve seen countless GM vehicles sidelined by these exact issues. This T42 TCM, part number 24240400, is the definitive solution, arriving pre-programmed to your vehicle’s specific VIN for a true plug-and-play repair that gets you back on the road without a costly trip to the dealership.
The TCM is the brain of your automatic transmission, controlling everything from shift points to torque converter lockup. When it fails, communication breaks down, leading to the frustrating and sometimes unsafe driving conditions you’re likely experiencing. This replacement module restores that critical communication, ensuring your transmission operates exactly as the factory intended.
From the Diagnostic Bay: A Common T42 Scenario
A customer brought in a Chevy Cobalt—which uses the same T42 platform as your Pursuit—complaining of harsh, banging shifts and a P0700 code. They were convinced their transmission was shot and were bracing for a multi-thousand dollar bill. After a quick scan, I saw solenoid circuit codes alongside the P0700. Instead of jumping to a rebuild, I checked the TCM. Sure enough, the module’s internal drivers had failed. We swapped in a VIN-programmed TCM like this one, and in less than an hour, the car was shifting perfectly. It’s a textbook example of how this one part can save you from a major, unnecessary repair.
Is Your Pontiac Showing These Symptoms?
A faulty TCM can manifest in several ways. If you’re noticing any of the following, it’s time to consider a replacement:
- ✔ Harsh, delayed, or erratic gear shifts that slam or hesitate.
- ✔ Vehicle is stuck in “limp mode” (usually second or third gear) and won’t shift up or down.
- ✔ The Check Engine Light or Transmission Warning Light is on with codes like P0700 (Transmission Control System Malfunction), P0750, P0753, P0758, etc.
- ✔ A noticeable drop in fuel economy due to inefficient shifting.
- ✔ Complete loss of communication with the transmission, preventing it from engaging at all.
Your 30-Minute Path to a Smooth Ride: Installation Steps
For the DIYer, this is a straightforward job. On your 2006 Pontiac Pursuit, the TCM is conveniently located on the driver’s side strut tower. You’ll need basic hand tools and about 30 minutes.
- Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts and to help reset the system.
- Locate the Module: Find the TCM mounted to the left-hand (driver’s side) strut tower in the engine bay.
- Disconnect and Remove: Carefully unplug the electrical connectors. Be gentle with the locking tabs. Then, unbolt the module from its mounting bracket.
- Install the New TCM: Mount the new, pre-programmed module in the same location and securely reconnect the electrical harnesses.
- Final Steps: Reconnect the battery terminal. While the module is plug-and-play, it’s best practice to use a basic OBD2 scanner to clear any stored diagnostic trouble codes (DTCs) from the vehicle’s memory.
Guaranteed Fitment for Your GM Vehicle
This T42 TCM is a direct replacement for part number 24240400 and is compatible with a wide range of General Motors vehicles. Please verify your model and location below:
- Pontiac Pursuit (2006): Transmission; (LH strut tower)
- Pontiac G5 (2007-2010): Transmission; (LH strut tower)
- Pontiac G6 (2006-2010): Transmission; (LH strut tower)
- Chevrolet Cobalt (2006-2010): Transmission; (LH strut tower)
- Chevrolet HHR (2006-2011): Transmission; (LH engine compartment)
- Chevrolet Impala (2006-2011): Transmission; (lower air cleaner housing)
- …and many other GM models including the Silverado, Tahoe, Yukon, Sierra, Savana, Express, and more. Refer to the full fitment list for details.
Frequently Asked Questions about the 2006 Pursuit TCM
Q: What does ‘VIN Programmed’ mean for me?
A: It means we flash the module with your vehicle’s unique Vehicle Identification Number (VIN) and the latest GM software before shipping. This ensures it communicates perfectly with your car’s other computers right out of the box, eliminating the need for expensive dealership programming.
Q: Do I need to send my old TCM back?
A: No. There is no core charge or need to return your old part. You can dispose of it or keep it, making the process faster and hassle-free.
Q: Will this fix a P0700 trouble code?
A: Yes, in most cases. A P0700 code is a general fault code indicating the TCM has detected a problem. Replacing a faulty TCM is often the direct solution to clearing this code and the underlying specific codes it has stored.
Q: What tools are required for installation on my Pursuit?
A: Typically, you will only need a basic socket set (e.g., 10mm socket) to remove the mounting bolts and possibly a small flathead screwdriver to help release the connector clips. No special diagnostic tools are required for the installation itself.