Restore Smooth Shifting to Your Chevrolet Uplander
Is your 2006-2009 Chevrolet Uplander suffering from harsh shifting, getting stuck in gear, or throwing transmission codes like P0700? You’re not alone. As a technician with over two decades of experience, I’ve seen countless GM vehicles, especially family haulers like the Uplander, develop these exact issues. The culprit is often a failing Transmission Control Module (TCM). This critical component is the brain of your automatic transmission, and when it malfunctions, it can make driving stressful and unsafe. This isn’t just an inconvenience; it’s a reliability issue that needs a solid, permanent fix.
This T42 TCM, part number 24256960, is the definitive solution. We take the guesswork and high dealership costs out of the equation. Each module is expertly programmed to your vehicle’s specific VIN before it ships. This means no expensive scan tools or programming sessions are required on your end. It’s a true plug-and-play repair that restores the precise, factory-intended shift patterns and torque converter operation, bringing your Uplander’s performance back to life.
Case Study: The Uplander That Didn’t Need a New Transmission
A customer brought in their ’08 Uplander with classic symptoms: it would slam into gear from a stop and occasionally refuse to shift past 2nd gear. A local shop had quoted them over $3,000 for a transmission rebuild. After hooking up my scanner, I saw a handful of solenoid circuit codes, all pointing to an electrical fault. Instead of tearing down the transmission, I inspected the TCM. After swapping in one of our VIN-programmed modules—a 25-minute job—all the codes cleared and the van shifted perfectly. The customer saved thousands and was back on the road the same day. This is why diagnosing the electronics first is crucial.
Is Your Uplander Showing These Transmission Problems?
A faulty TCM can manifest in several ways. If you’re experiencing any of the following, this module is the likely solution for your 2006-2009 Uplander TCM failure.
- ✔ Harsh, erratic, or delayed gear shifts.
- ✔ Vehicle is stuck in “limp mode” (usually 2nd or 3rd gear).
- ✔ Check Engine Light or Transmission Warning Light is on.
- ✔ Diagnostic Trouble Codes (DTCs) are present, such as P0700, P0750, or other solenoid-related faults.
- ✔ The transmission refuses to upshift or downshift correctly.
- ✔ A noticeable drop in fuel economy.
- ✔ Intermittent loss of communication with the module.
DIY Installation in Under 30 Minutes
Replacing the TCM on your Uplander is a straightforward job that most DIYers can handle with basic hand tools. The module is conveniently located and easily accessible.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- Locate the TCM: On the 2006-2009 Uplander, the Transmission Control Module is typically found mounted to the driver’s side strut tower in the engine compartment.
- Disconnect and Remove: Carefully unclip the electrical connectors. Be gentle to avoid damaging the plastic tabs. Then, unbolt the module from its mounting bracket.
- Install the New Module: Bolt the new, VIN-programmed TCM into place and securely reconnect the electrical harnesses. You should hear a ‘click’ as they lock in.
- Reconnect and Verify: Reconnect the battery terminal. Start the vehicle and allow it to idle for a few minutes. Take it for a test drive to confirm that shifting performance has been restored. Any stored codes should clear automatically, but using a basic scan tool to erase them is good practice.
Verified Fitment for Your General Motors Vehicle
While this is the correct part for the 2006-2009 Chevrolet Uplander, this T42 TCM is also compatible with a wide range of other GM vehicles. Please confirm your model and part number below. This part is a direct replacement for service numbers including 24242391, 24234503, and 24252114.
Fitment List:
- ALLURE 06-09 Transmission; (lower air cleaner housing)
- AVALANCHE 1500 07-08 Transmission; (next to battery)
- CANYON 08-12 Transmission; (RH rear engine compartment)
- COBALT 06-10 Transmission; (LH strut tower)
- COLORADO 08-12 Transmission; (RH rear engine compartment)
- DTS 06-11 Transmission; (RH front engine compartment)
- ENVOY 06-09 Transmission; (LH engine compartment)
- EXPRESS VANS 1500/2500/3500 06-14 Transmission; (RH engine compartment)
- G5 07-10 Transmission; (LH strut tower)
- G6 06-10 Transmission; (LH strut tower)
- GRAND PRIX 06-08 Transmission; (lower air cleaner housing)
- HHR 06-11 Transmission; (LH engine compartment)
- HUMMER H3 08-10 Transmission; (RH rear engine compartment)
- IMPALA 06-11 Transmission; (lower air cleaner housing)
- ION 06-07 Transmission; (behind LH strut tower)
- LACROSSE 06-09 Transmission; (lower air cleaner housing)
- LUCERNE 06-11 Transmission; (LH engine compartment)
- MALIBU 06-10 Transmission; (LH frame rail)
- MONTE CARLO 06-07 Transmission; (lower air cleaner housing)
- MONTANA 06-09 Transmission; (LH strut tower)
- RAINIER 06-07 Transmission
- RENDEZVOUS 06-07 Transmission; (air cleaner box)
- SAAB 9-7X 06-09 Transmission; (LH engine compartment)
- SAVANA VANS 1500/2500/3500 06-14 Transmission; (RH engine compartment)
- SIERRA 1500/2500 07-13 Transmission; (next to battery)
- SILVERADO 1500/2500 07-13 Transmission; (next to battery)
- SSR 05-06 Transmission; (front LH frame)
- SUBURBAN 1500 07-08 Transmission; (next to battery)
- TAHOE 07-09 Transmission; (next to battery)
- TERRAZA 06-07 Transmission; (LH strut tower)
- TRAILBLAZER 06-09 Transmission; (LH engine compartment)
- UPLANDER 06-09 Transmission; (LH strut tower)
- VUE 07-10 Transmission
- YUKON & YUKON XL 1500 07-09 Transmission; (next to battery)
Do I need to do any programming myself?
Do I need to do any programming myself?
No. This module is fully programmed to your vehicle’s VIN before shipping. It is ready for installation right out of the box, with no need for a trip to the dealership or a special scan tool.
Is there a core charge for my old part?
No, there is no core charge. You can keep your old module or dispose of it without the hassle of returning it.
Will this fix a P0700 trouble code?
A P0700 code is a general fault request from the TCM to the main computer (PCM) to turn on the Check Engine Light. In most cases, a faulty TCM is the root cause, and replacing it with our programmed unit will resolve the P0700 code along with any other specific transmission codes.
What if I install this and my problem doesn’t go away?
While this part fixes the vast majority of electronic transmission issues, problems can sometimes stem from internal mechanical parts like solenoids or wiring harnesses. If issues persist, it’s a good idea to check the wiring harness for damage and test the individual transmission solenoids. Our expert support team is also here to help guide you.