Restore Smooth Shifting to Your 2006-2014 GMC Savana 1500
Is your workhorse Savana 1500 suddenly shifting harshly, getting stuck in gear, or throwing transmission codes? A faulty Transmission Control Module (TCM) is one of the most common culprits I see for these issues on GM vans. As the brain of your automatic transmission, the TCM dictates every gear change. When it fails, it can bring your work to a grinding halt. This T42 TCM, part number 24235753, is the direct, reliable solution to get your van back on the road, performing like it should.
A Real-World Scenario from My Shop
A local contractor brought in his 2011 Savana 1500 last month. The van would drive fine for about 20 minutes, then suddenly slam into gear and get stuck in 3rd (limp mode). He’d already replaced a shift solenoid with no luck. After a quick scan, we saw a generic P0700 code and intermittent communication loss with the TCM. Instead of a costly transmission teardown, we started with the most likely cause. We installed one of our VIN-programmed TCMs, and the problem was solved in under an hour. He was back on the job site the same day, saving hundreds in diagnostic fees and lost work time.
Diagnosing a Faulty 2006-2014 Savana 1500 TCM
Transmission problems can be frustrating, but a failing TCM often leaves a clear trail of evidence. If you’re experiencing any of the following, this module is your likely fix:
- โ Erratic and Harsh Shifting: Abrupt, jerky gear changes or a noticeable bang when shifting from Park to Drive.
- โ Limp Mode Activation: The vehicle refuses to shift out of 2nd or 3rd gear to prevent further damage.
- โ Warning Lights: An illuminated Check Engine Light or Transmission Warning Light on your dash.
- โ Diagnostic Trouble Codes (DTCs): Common codes include P0700 (Transmission Control System Malfunction) and various solenoid-specific codes (e.g., P0753, P0758).
- โ Delayed Engagement: A long pause before the transmission engages after shifting into Drive or Reverse.
- โ Poor Fuel Economy: Inefficient shifting and torque converter lock-up issues can cause a sudden drop in MPG.
Plug-and-Play Installation: No Dealer Visit Required
One of the biggest advantages of this TCM is that it arrives pre-programmed to your Savana’s specific Vehicle Identification Number (VIN). This eliminates the need for expensive dealership programming. The installation is a straightforward job for any DIYer or professional mechanic.
- Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent electrical shorts and reset the system.
- Locate the Old TCM: On the 2006-2014 Savana vans, the TCM is typically found in the engine compartment on the right-hand (passenger) side.
- Disconnect and Remove: Carefully unplug the electrical connectors. Note their orientation. Then, unbolt the old module from its mounting bracket.
- Install the New Module: Mount the new TCM, securely reconnect the electrical harnesses, and then reconnect the vehicle’s battery.
- Final Check: Start the vehicle. While our programming clears most faults, it’s good practice to use a basic OBD2 scan tool to clear any remaining stored codes.
Guaranteed Compatibility and Reliability
This module is built to meet or exceed original equipment standards for a perfect fit and lasting performance. It’s backed by a one-year warranty for your peace of mind. This unit is a direct replacement for a wide range of GM vehicles and interchanges with the following part numbers:
Interchangeable Part Numbers: 24252114, 24234503, 24230461, 24234274, 24235340, 24235754, 24238856, 24239224, 24239926, 24240400, 24241806, 24243901, 24243921, 24255280, 24256960, 24235732, 24235753, 24240449, YNXS.
Frequently Asked Questions
Q: What does VIN programming do?
A: VIN programming loads your vehicle’s specific software onto the TCM. This ensures it communicates correctly with your engine and transmission for optimal shift points, torque converter strategy, and overall performance without needing a trip to the dealer.
Q: Is this a difficult part to install myself?
A: Not at all. For most models, including the Savana 1500, it’s a simple unbolt-and-unplug process that takes less than 30 minutes with basic hand tools. Our pre-programming makes it a true plug-and-play repair.
Q: Will this fix a P0700 check engine light code?
A: A P0700 code is a general fault code indicating the TCM has detected a problem. In many cases where the TCM itself is the source of the fault, replacing it will resolve the P0700 and any related transmission codes.
Q: Do I need to send my old TCM back?
A: No, there is no core charge for this part. You can keep or dispose of your old module, making the process faster and more convenient for you.