Restore Peak Performance to Your Chevrolet Suburban
Is your 2007-2008 Chevrolet Suburban 1500 suffering from delayed, harsh, or unpredictable shifting? Are you stuck dealing with a check engine light and the vehicle going into limp mode? You’re not alone. As a technician with over two decades of experience, I’ve seen countless GM trucks and SUVs exhibit these exact issues, and the culprit is almost always a failing Transmission Control Module (TCM). This replacement T42 TCM, part number 24243901, is the definitive solution to get your family hauler back to operating smoothly and reliably.
The TCM is the brain of your automatic transmission, responsible for managing every gear change, controlling torque converter lockup, and monitoring system health. When it fails, it can cause a cascade of problems that are not only frustrating but can also be a safety concern. Our module is meticulously tested to meet or exceed original equipment standards, ensuring a dependable and long-lasting repair for your 4L60E, 4L65E, or 4L70E transmission.
From the Diagnostic Bay
I remember a customer bringing in his ’07 Suburban, completely fed up. He explained, “One day it drives perfectly, the next it slams into gear and gets stuck in 3rd.” He’d already replaced a shift solenoid based on a code, but the problem persisted intermittently. After connecting my scan tool, I saw the classic P0700 (Transmission Control System Malfunction) code, but the solenoid codes were inconsistent. This is a tell-tale sign of an electronic, not mechanical, failure. The internal circuitry of his original TCM was failing under heat. We installed a VIN-programmed module, and the truck’s shifting was instantly crisp and correct. He called a week later to say it hadn’t missed a beat—a simple part solved a major headache.
Is Your Suburban Exhibiting These Telltale Signs?
A failing TCM can manifest in several ways. If you’re experiencing any of the following, it’s a strong indicator that your module needs replacement. Ignoring these symptoms can lead to more significant transmission damage down the road.
- âś” Harsh, erratic, or delayed gear shifts.
- âś” Vehicle is stuck in “limp mode” (usually 2nd or 3rd gear).
- âś” Check Engine Light or Transmission Warning Light is illuminated.
- âś” Diagnostic Trouble Codes (DTCs) are present, such as P0700, P0750, P0753, P0758, or other solenoid-related faults.
- âś” The transmission refuses to upshift or downshift properly.
- âś” A noticeable decrease in fuel economy.
- âś” The torque converter fails to lock up at highway speeds.
Your Solution: A Pre-Programmed 2007-2008 Suburban 1500 TCM
The biggest advantage of this module is our complimentary VIN programming service. We flash the unit with your vehicle’s specific Vehicle Identification Number and the latest GM software updates before it ships. This means the part arrives ready for a true plug-and-play installation, saving you from a costly and time-consuming trip to the dealership for programming.
Get Back on the Road: A Simple Installation Guide
For the 2007-2008 Suburban 1500, this job is straightforward for any DIYer with basic tools. You can have your truck running right in under 30 minutes.
- Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts.
- Locate the TCM: On your Suburban, the TCM is conveniently located in the engine compartment, right next to the battery.
- Disconnect and Remove: Carefully unplug the electrical connectors from the old module. Then, unbolt the module from its mounting bracket.
- Install the New Module: Bolt the new TCM into place and securely reconnect the electrical harnesses. Ensure they click into place.
- Reconnect Power: Reattach the negative battery terminal.
- Final Steps: Start the vehicle. While the module is pre-programmed, it’s good practice to use a basic OBD2 scan tool to clear any stored fault codes from the ECU to ensure a clean slate.
Verified Vehicle Compatibility
This T42 TCM is a direct replacement for a wide range of General Motors vehicles. While this page focuses on the Suburban, it is also confirmed to fit the following models, among others. Please verify your part number.
- âś” Chevrolet Suburban 1500: 2007-2008 (next to battery)
- âś” Chevrolet Tahoe: 2007-2009 (next to battery)
- âś” Chevrolet Silverado 1500: 2007-2013 (next to battery)
- âś” GMC Yukon / Yukon XL 1500: 2007-2009 (next to battery)
- âś” GMC Sierra 1500: 2007-2013 (next to battery)
- âś” Chevrolet Avalanche 1500: 2007-2008 (next to battery)
- âś” Cadillac DTS: 2006-2011 (RH front engine compartment)
- âś” Chevrolet Impala: 2006-2011 (lower air cleaner housing)
Frequently Asked Questions
Do I need to take this part to a dealer for programming?
No. We handle all the programming for you. Simply provide your vehicle’s VIN at checkout, and the module will arrive ready to install right out of the box, saving you hundreds of dollars in dealership fees.
Is there a core charge for my old part?
No, there is absolutely no core charge. You can keep your old part or recycle it at your convenience without the hassle of shipping it back.
What tools are required for this installation?
Basic hand tools are all you need. Typically, a simple socket set to remove the mounting bolts and a wrench for the battery terminal will be sufficient for the entire job.
Will this fix a P0700 trouble code?
Yes, in many cases. A P0700 code indicates a general fault within the transmission control system. If the root cause is a failing TCM, replacing it with this pre-programmed unit will resolve the issue and allow the code to be cleared.