Is your 2006-2014 GMC Savana 2500 experiencing erratic shifting, getting stuck in gear, or showing transmission-related error codes? These are classic signs of a failing Transmission Control Module (TCM). Restore your van’s performance and reliability with this direct-fit, VIN-programmed GM T42 TCM. This module is the brain of your automatic transmission, controlling everything from shift points to torque converter lockup. By replacing your faulty unit, you can eliminate frustrating drivability issues and prevent further damage to your transmission.
This isn’t just a replacement part; it’s a complete solution. We pre-program the module to your vehicle’s specific VIN, ensuring it works perfectly right out of the box. This crucial step means you can bypass expensive dealership programming and complex setup procedures. Simply install the module, clear any old codes, and get your workhorse back on the road with the smooth, predictable shifting you expect. It’s designed to meet or exceed original equipment specifications for vehicles using the 4L60E, 4L65E, 4L70E, and 4L80E automatic transmissions.
From the Diagnostic Bay
We had a 2011 Savana 2500 work van come into the shop that was a real headache for the owner. It would randomly refuse to shift out of 2nd gear, making highway driving impossible. The check engine light was on, and our scan tool pulled a P0700 (Transmission Control System Malfunction) and a handful of solenoid codes. After confirming the wiring and solenoids were good, we pinpointed the TCM. Instead of a costly trip to the dealer, the owner opted for one of our VIN-programmed units. The install took less than 30 minutes in the engine bay. After a quick battery disconnect to reset adaptations, the van shifted perfectly. It’s a common failure, and having a pre-programmed solution saves technicians and owners significant time and money.
Diagnosing a Faulty Savana 2500 Transmission Module
A failing TCM can manifest in various ways, often mimicking internal transmission problems. Before condemning your transmission, check for these common symptoms that point directly to the module.
- ✔ Harsh, delayed, or erratic gear shifts.
- ✔ Vehicle enters ‘limp mode,’ often stuck in 2nd or 3rd gear.
- ✔ Check Engine Light or Transmission Warning Light is illuminated.
- ✔ Diagnostic Trouble Codes (DTCs) such as P0700, P0750, or other solenoid-specific codes are present.
- ✔ Inability to upshift or downshift properly.
- ✔ Noticeable decrease in fuel economy.
- ✔ Complete loss of communication with the transmission module.
Key Features & Benefits
This module is engineered for a seamless repair experience, focusing on reliability and ease of use.
- Plug & Play Installation: Pre-programmed with the latest GM software updates matched to your vehicle’s VIN. No additional programming is required.
- Restored Performance: Corrects poor shifting, hesitation, and communication errors, leading to a smoother ride and improved fuel efficiency.
- OEM-Standard Quality: Built to strict quality standards to ensure long-lasting durability and dependable operation under all driving conditions.
- Broad Compatibility: Interchangeable with numerous part numbers including 24252114, 24234503, 24230461, 24238856, and 24256960, making it a versatile solution for many GM trucks, vans, and SUVs.
Frequently Asked Questions
What does a VIN-programmed TCM mean?
It means we load your vehicle’s specific Vehicle Identification Number (VIN) and the corresponding software onto the module before we ship it. This ensures it communicates perfectly with your van’s engine computer and other systems, just like the original part from the factory, eliminating the need for a trip to the dealership for coding.
Will this fix my P0700 transmission code?
A P0700 code is a general fault code indicating the TCM has detected a problem. While a faulty TCM is a very common cause, this code can also be triggered by other issues. Replacing the TCM often resolves the P0700 and related codes, but proper diagnosis is always recommended. This module is designed to correct internal electronic failures that trigger these codes.
Where is the TCM located on my 2006-2014 Savana 2500?
On the GMC Savana and Chevrolet Express vans from this era, the Transmission Control Module is typically located in the engine compartment on the right-hand (passenger) side. It’s an external module, making it relatively easy to access and replace without dropping the transmission pan.
Do I need to send my old part back?
No, there is no core charge for this part. You can keep your old module, which saves you the time and hassle of packaging and shipping it back.
Are any special tools required for installation?
Basic hand tools, such as a socket set, are typically all that is needed for the physical installation. After installation, it is recommended to use a standard OBD2 scan tool to clear any stored diagnostic trouble codes from the vehicle’s memory.