2007-2008 Avalanche 1500 Transmission Control Module 24256960 Programmed To Your VIN TCM

Restore Smooth Shifting Instantly

Fix your 2007-2008 Avalanche’s harsh shifting and transmission errors with our plug-and-play T42 TCM. Pre-programmed to your VIN for a hassle-free installation with no dealer visit required. Get back on the road with confidence. Order today!

$79.95

+11.99 USPS Priority Shipping

Availability: In stock



SKU: 591-07270-798 Categories: ,
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Is Your Avalanche Shifting Erratically?

If your 2007 or 2008 Chevrolet Avalanche 1500 is exhibiting symptoms like harsh gear changes, delayed engagement, or getting stuck in a single gear, a failing Transmission Control Module (TCM) is the most likely culprit. The TCM is the electronic brain of your automatic transmission, responsible for orchestrating every shift with precision. When it fails, it can cause a cascade of problems, from poor fuel economy to a complete inability to drive. This genuine quality T42 TCM, service part number 24256960, is the definitive solution to restore your truck’s transmission performance to factory standards.

From the Diagnostic Bay

We recently had a 2008 Silverado in the shop with a classic case of transmission confusion. The owner had already spent a small fortune replacing shift solenoids based on some generic trouble codes, but the harsh 1-2 shift and intermittent ‘limp mode’ persisted. After a quick scan, we saw communication errors pointing away from the solenoids and directly to the TCM. Once we installed a VIN-programmed T42 module like this one, the truck shifted like it just rolled off the assembly line. It’s a common scenario: don’t chase individual parts when the central controller is the root cause.

Identifying a Faulty 2007-2008 Avalanche Transmission Module

The transmission is a complex system, but the symptoms of a failing TCM are often distinct and disruptive to your driving experience. This module is engineered to resolve these issues directly, providing a reliable and lasting repair. By replacing your old unit, you’re not just fixing a part; you’re restoring the communication link between your engine and wheels for smoother, more predictable performance.

Common Symptoms of TCM Failure

  • ✔ Erratic and Harsh Shifting: Experiencing sudden, jerky gear changes or a noticeable slam when the transmission shifts.
  • ✔ Stuck in Gear / Limp Mode: The vehicle refuses to shift out of a low gear (often 2nd or 3rd) to protect the transmission from further damage.
  • ✔ Warning Lights: The Check Engine Light or a dedicated transmission warning light illuminates on your dashboard.
  • ✔ Diagnostic Trouble Codes (DTCs): Common codes like P0700 (Transmission Control System Malfunction) or various solenoid-specific codes (P0750, P0753, etc.) are stored.
  • ✔ Delayed Engagement: A noticeable pause after shifting from Park into Drive or Reverse before the gear engages.
  • ✔ Poor Fuel Economy: Inefficient shifting and torque converter lock-up can lead to a significant drop in gas mileage.

The Power of VIN Programming

What sets this module apart is our expert VIN programming service. Before shipping, we flash the module with your truck’s specific Vehicle Identification Number (VIN) and the latest GM software updates. This critical step ensures the TCM communicates flawlessly with your vehicle’s other computers, like the Engine Control Module (ECM). The result is a true plug-and-play installation. You can avoid the costly and time-consuming trip to the dealership for programming, saving you hundreds of dollars and getting your Avalanche back on the road faster.

This module is a direct replacement for a wide range of part numbers, including 24252114, 24234503, 24230461, and 24242391. It is compatible with numerous GM vehicles equipped with 4-speed automatic transmissions like the 4L60E, 4L65E, and 4L70E, making it a versatile solution for many models beyond the Avalanche.

Frequently Asked Questions

What does the Transmission Control Module do?

The TCM acts as the central computer for your automatic transmission. It collects data from various sensors on the engine and transmission to control shift points, torque converter lockup, and line pressure, ensuring smooth and efficient operation.

Why is VIN programming so important for this part?

VIN programming loads your vehicle’s specific software and configurations onto the module. Without it, the TCM cannot communicate correctly with the rest of the vehicle’s electronics, leading to persistent shifting problems or a no-start condition. Our pre-programming makes installation seamless.

Can I install this 2007-2008 Avalanche Transmission Module myself?

Yes, this is a straightforward installation for someone with basic mechanical skills. On the Avalanche, the TCM is typically located next to the battery in the engine compartment. Simply disconnect the battery, unplug the electrical connectors from the old module, unbolt it, and install the new one in its place. The entire process usually takes less than 30 minutes.

Will this module fix a P0700 trouble code?

A P0700 code is a general fault code indicating the TCM has detected a problem. While this module often resolves the root cause that triggers a P0700, it’s always best to have the vehicle scanned for more specific codes (e.g., P07xx) to confirm the diagnosis. However, if you are experiencing the common symptoms listed, a faulty TCM is the most probable cause.

Is there a core charge for this part?

No, we do not require you to send your old module back. There is no core charge associated with this purchase, saving you the time and hassle of return shipping.

Genuine OEM

Yes

Year
Brand

GM

MPN

24256960

Condition

Refurbished

Year

2007 – 2008

Model

Avalanche 1500

Hardware Type

Interchange part number

Manufacturer Part Number

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