If you’re dealing with the frustration of a 2007, 2008, or 2009 Chevrolet Tahoe that’s shifting harshly, stuck in gear, or throwing transmission codes, you’ve come to the right place. As a technician with over two decades of experience, I know that a faulty Transmission Control Module (TCM) is one of the most common culprits behind these issues on the GMT900 platform. This isn’t just an inconvenience; it’s a matter of reliability and safety. This replacement T42 Transmission Control Module, part number 24235753, is the definitive, hassle-free solution to restore your SUV’s performance and your peace of mind.
From the Diagnostic Bay: The Tahoe Stuck in Limp Mode
A customer brought in their ’08 Tahoe last month, completely frustrated. The truck was stuck in what felt like third gear (limp mode), the check engine light was on, and it was guzzling gas. They were worried about a catastrophic transmission failure costing thousands. After a quick scan, I saw the classic codes: P0700 (Transmission Control System Malfunction) and a few solenoid circuit faults. Instead of jumping to a transmission rebuild, we checked the TCM. The diagnosis pointed to an internal failure in the module. We ordered this exact VIN-programmed unit. Less than an hour after it arrived, the new module was in, codes were cleared, and the Tahoe was shifting as smoothly as it did the day it left the factory. The customer saved a fortune and a massive headache by addressing the real source of the problem.
Is Your Tahoe Showing These Transmission Warning Signs?
A failing 2007-2009 Tahoe TCM can manifest in several ways. If you’re experiencing any of the following, this module is the likely solution:
- ✔ Harsh, slamming shifts or erratic gear changes.
- ✔ The vehicle feels stuck in one gear and won’t upshift or downshift (Limp Mode).
- ✔ Check Engine Light is illuminated with codes like P0700, P0750, P0753, P0758, or other solenoid-related DTCs.
- ✔ Delayed engagement when shifting from Park to Drive or Reverse.
- ✔ A noticeable drop in fuel economy.
- ✔ The transmission temperature gauge reads higher than normal.
Your 30-Minute Path to a Smooth-Shifting Tahoe
One of the best features of this module is its straightforward installation, designed for both seasoned mechanics and first-time DIYers. No specialized tools are needed. For the 2007-2009 Tahoe, you’ll find it right next to the battery.
- Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts and help reset the system.
- Locate the Module: Open the hood and find the TCM mounted next to the battery in your Tahoe.
- Disconnect and Remove: Carefully unplug the electrical connectors. Press the release tabs firmly. Then, unbolt the module from its mounting bracket.
- Install the New TCM: Mount the new module onto the bracket and securely plug in the electrical connectors. You’ll hear a click when they’re fully seated.
- Final Steps: Reconnect the battery terminal. Start the vehicle and allow it to idle for a few minutes. While our VIN programming handles the critical setup, it’s good practice to use a basic scan tool to clear any stored fault codes.
Verified Vehicle Compatibility List
This T42 TCM, including part number 24235753, is a direct replacement for a wide range of General Motors vehicles. While this page focuses on the 2007-2009 Tahoe TCM, it also fits the following models. Please verify your specific application.
- Chevrolet: Tahoe (07-09), Silverado 1500/2500 (07-13), Suburban 1500 (07-08), Avalanche 1500 (07-08), Express/Savana Vans (06-14), Cobalt (06-10), HHR (06-11), Impala (06-11), Malibu (06-10), Monte Carlo (06-07), Colorado (08-12), SSR (05-06)
- GMC: Yukon / Yukon XL 1500 (07-08), Sierra 1500/2500 (07-13), Canyon (08-12), Envoy (06-09)
- Cadillac: DTS (06-11)
- Buick: LaCrosse (06-09), Lucerne (06-11), Rainier (06-07), Rendezvous (06-07), Allure (06-09)
- Pontiac: G5 (07-10), G6 (06-10), Grand Prix (06-08), Pursuit (06)
- Saturn: Aura (07-09), Ion (06-07), Vue (07-10)
- Hummer: H3 (08-10)
- Saab: 9-7X (06-09)
Frequently Asked Questions
Do I need to take my Tahoe to the dealer for programming?
No. This module arrives pre-programmed to your vehicle’s specific VIN. This makes it a true plug-and-play part, saving you the time, cost, and hassle of a dealership visit.
What is a TCM and what does it do?
The Transmission Control Module (TCM) is the electronic brain of your automatic transmission. It receives data from various sensors and controls shift points, torque converter lockup, and line pressure to ensure smooth and efficient operation.
Will this fix my P0700 check engine light code?
In most cases, yes. A P0700 code is a general fault code indicating the TCM has detected a problem. When the TCM itself is the source of the failure, replacing it with this programmed unit will resolve the issue and allow the code to be cleared.
Is there a core charge for this part?
No, there is no core charge. You are not required to send your old, faulty module back to us, making the process simpler and more convenient for you.
How do I provide my VIN for programming?
You will be prompted to enter your vehicle’s 17-digit VIN during the checkout process. We cannot ship the module until we have this information to ensure it is programmed correctly for your specific Tahoe.