Is Your GMC Savana Van Shifting Erratically or Stuck in Gear?
If your 2006-2014 GMC Savana 1500 is experiencing harsh shifting, delayed gear engagement, or is stuck in limp mode, a failing Transmission Control Module (TCM) is the most likely culprit. As the brain of your automatic transmission, a faulty TCM can bring your work van or daily driver to a standstill, causing frustrating and costly downtime. This T42 TCM, part number 24235754, is the definitive solution, arriving pre-programmed to your vehicle’s VIN for a simple, direct-fit replacement.
A Real-World Scenario from My Shop
“A local delivery driver brought his 2011 Savana 1500 into my shop, complaining it wouldn’t shift out of 3rd gear and the check engine light was on. His scan tool showed a P0700 (Transmission Control System Malfunction). He was worried about losing days of work. Instead of a complex internal transmission repair, we identified a failed TCM. We installed one of these VIN-programmed modules, and in less than 30 minutes, the van was shifting perfectly. He was back on his route the same afternoon, avoiding a costly dealership visit and days of lost income. This is the most common fix for these symptoms I’ve seen over the last 20 years.”
Diagnose Your Transmission Problems
A failing TCM can manifest in several ways. If you’re experiencing any of the following, it’s time to consider a replacement:
- âś” Erratic Shifting: Abrupt, harsh, or unpredictable gear changes during acceleration or deceleration.
- âś” Limp Mode: The vehicle is stuck in a single gear (usually 2nd or 3rd) to prevent further damage.
- âś” Warning Lights: An illuminated Check Engine Light or Transmission Warning Light, often with Diagnostic Trouble Codes (DTCs) like P0700, P0750-P0758 (solenoid codes), or other transmission-related faults.
- âś” No Shifting: Complete failure to upshift or downshift, leading to poor acceleration and high RPMs.
- âś” Poor Fuel Economy: Inefficient shifting and torque converter lock-up can cause a noticeable drop in MPG.
Plug-and-Play Installation: No Dealer Visit Required
This module is designed for a straightforward installation that a DIY enthusiast or professional mechanic can complete with basic tools. For your 2006-2014 Savana 1500 TCM, the module is conveniently located in the engine compartment on the right-hand side.
- Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent electrical shorts and reset the system.
- Locate the Module: Find the old TCM on the RH side of the engine bay.
- Disconnect and Remove: Carefully unplug the electrical connectors and unbolt the module from its mounting bracket.
- Install the New Module: Bolt the new, pre-programmed TCM into place and securely reconnect the electrical harnesses.
- Reconnect Power: Reattach the negative battery terminal. The vehicle is now ready to start. We recommend clearing any stored DTCs with a basic scan tool.
Frequently Asked Questions (FAQ)
- Q: Does this module require programming at the dealership?
- A: No. We program the module to your vehicle’s specific VIN before shipping. It arrives ready for immediate installation, saving you time and the high cost of dealer programming.
- Q: Will this fix a P0700 trouble code?
- A: A P0700 code indicates a general fault in the transmission control system. While a failing TCM is a very common cause, you should ensure other potential issues like faulty solenoids or wiring are checked. In most cases, replacing the TCM resolves this and related codes.
- Q: Is this part compatible with other part numbers?
- A: Yes, this T42 TCM is a direct replacement for numerous service numbers, including 24252114, 24234503, 24230461, 24235754, and others, ensuring wide compatibility across the GM lineup.
- Q: What is the warranty on this 2006-2014 Savana 1500 TCM?
- A: This part is backed by our comprehensive one-year warranty, giving you peace of mind and confidence in your repair.