Restore Your Van’s Drivability with a Programmed T42 TCM
If your 2006-2014 GMC Savana 1500 is suffering from erratic shifting, getting stuck in gear, or throwing transmission codes, a failing Transmission Control Module (TCM) is the likely culprit. As a mechanic with over two decades of diagnostic experience, I’ve seen firsthand how a faulty TCM can sideline a perfectly good workhorse. This isn’t just an inconvenience; for a business owner, it’s lost time and money. This OEM-quality T42 TCM, service part number 24230461, is the direct-fit, reliable solution to get your van back on the road and working as hard as you do.
The biggest hurdle with electronic module replacement has always been the expensive and time-consuming trip to the dealership for programming. We eliminate that step entirely. By providing your vehicle’s VIN at checkout, we program the module with the latest GM software updates specifically for your Savana. It arrives at your door ready for a true plug-and-play installation, restoring the precise, smooth shifting you depend on. This isn’t just a part; it’s a complete solution designed for professional mechanics and savvy DIYers who value their time and need a dependable fix.
Is Your Savana Van Exhibiting These Problems?
- ✔ Harsh, banging shifts or delayed gear engagement.
- ✔ The vehicle is stuck in “limp mode,” often in 2nd or 3rd gear.
- ✔ Check Engine Light or Transmission Warning Light is on with codes like P0700, P0750, or other solenoid-related DTCs.
- ✔ Inability to upshift or downshift correctly, leading to poor acceleration and terrible fuel mileage.
- ✔ Intermittent loss of communication with the module or complete transmission shutdown.
Case Study: A Work Van’s Second Chance
A local contractor brought in his ’09 Savana 1500. The van would randomly refuse to shift out of 2nd gear, especially on hot days after multiple stops. His scanner showed a generic P0700 code. After checking the wiring and solenoids, which tested fine, we identified the TCM as the source of the intermittent failure. Instead of a costly dealership repair and days of downtime, we installed one of our pre-programmed modules. The entire job took less than an hour in his own shop. He was back on the job the same afternoon, with the van shifting better than it had in years. That’s the value of a reliable, ready-to-install part.
Get Your Savana Back to Work: Installation Steps
- ✔ Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent electrical shorts and help reset the system.
- ✔ Locate the Module: On the 2006-2014 Savana 1500 Van, the TCM is typically found in the engine compartment on the right-hand (passenger) side.
- ✔ Disconnect and Remove: Carefully unplug the electrical connectors from the old module. Then, unbolt it from its mounting bracket.
- ✔ Install the New Module: Bolt the new, pre-programmed TCM into place. Securely reconnect the electrical harnesses, ensuring they click into place.
- ✔ Reconnect Power: Reattach the negative battery terminal.
- ✔ Final Scan: Start the vehicle and use a standard OBD2 scan tool to clear any stored diagnostic trouble codes from the computer’s memory. Test drive to confirm smooth operation.
Key Advantages of This Plug-and-Play Solution
- ✔ VIN Programmed & Ready to Install: We handle the complex programming for you. No need for a GM Tech II or a visit to the dealer. This saves you hundreds of dollars and significant downtime.
- ✔ Restores Transmission Performance: By precisely managing shift points, line pressure, and torque converter lockup, this module eliminates common issues and protects your transmission from further damage.
- ✔ OEM-Grade Dependability: Built to meet or exceed original equipment specifications for a perfect fit and long-lasting function, backed by a one-year warranty.
- ✔ Wide Interchange Compatibility: This module directly replaces a range of part numbers, including 24252114, 24234503, 24234274, 24235340, 24256960, and more, ensuring broad application across the GM lineup.
- ✔ No Core Charge: Keep your old part. There’s no need to deal with the hassle and expense of shipping a core back.
Verified to Fit These General Motors Vehicles
This T42 Transmission Control Module is confirmed to fit a wide array of GM vehicles, including but not limited to the Chevrolet Express & GMC Savana vans, Chevrolet Silverado & GMC Sierra trucks, Tahoe, Yukon, Suburban, Impala, Cobalt, HHR, and many more from Buick, Cadillac, Pontiac, and Saturn. Please use the fitment checker to confirm compatibility for your specific model and year.
Frequently Asked Questions
Do I need to do any programming myself?
No. This module is fully programmed to your vehicle’s VIN before it ships. It is a plug-and-play solution that requires no additional programming or dealership visits.
What tools do I need for installation?
Basic hand tools are all that’s required, typically a socket set to remove the mounting bolts and a wrench for the battery terminal. The entire process usually takes less than 30 minutes.
Will this fix my P0700 check engine light code?
A P0700 code is a general transmission fault request. If the root cause is a failed TCM, then yes, replacing it with this module will resolve the issue. It’s crucial to ensure proper diagnosis has been performed to rule out wiring or solenoid problems.
Is there a core charge for my old part?
No, we do not require a core return. You can keep or dispose of your old module without any extra fees or hassle.
What if I have another part number?
This module is a direct replacement for many GM service numbers like 24252114, 24234503, 24239224, and others. Check the interchange list or contact our expert support to confirm compatibility.