Restore Peak Performance to Your GMC Yukon
Are you tired of harsh, unpredictable shifts, a persistent check engine light, or your GMC Yukon being stuck in limp mode? A failing Transmission Control Module (TCM) is often the culprit, disrupting your vehicle’s performance and your peace of mind. This pre-programmed T42 TCM is the definitive, hassle-free solution to get your SUV driving smoothly and reliably again, eliminating the need for an expensive dealership visit.
Common Symptoms & Your Solution
If your vehicle is experiencing any of the following issues, a faulty TCM is the likely cause. This module is engineered to be the direct solution, restoring the precise electronic control your transmission needs.
- Harsh, erratic, or delayed gear shifts
- Vehicle stuck in a single gear (limp mode)
- Transmission or Check Engine warning lights are on
- Diagnostic Trouble Codes (DTCs) such as P0700, P0750, P0753, P0758, or other solenoid-related codes
- Failure to upshift or downshift correctly
- Noticeable decrease in fuel efficiency
Features & Tangible Benefits
- ✔ Ready to Install, No Dealer Visit Needed: This module arrives pre-programmed to your Yukon’s specific VIN. This means no extra costs or time spent at a dealership for programming—it’s a true plug-and-play installation that restores factory performance right out of the box.
- ✔ Restored Drivability & Confidence: By precisely managing shift points and torque converter lockup, this module eliminates erratic behavior and delayed engagement, giving you a smooth, predictable ride and helping to improve fuel economy.
- ✔ Engineered for Durability: Built to meet or exceed original GM specifications, this module is designed for long-lasting, consistent performance, whether you’re towing a boat or navigating daily traffic. This is the correct 2007-2009 GMC Yukon transmission control module for a lasting repair.
- ✔ Guaranteed Fitment: Designed as a direct replacement for a wide range of GM service numbers, including 24252114, 24234503, and 24238856, ensuring a perfect match for your vehicle’s system.
- ✔ Purchase with Confidence: This unit is backed by our one-year replacement warranty.
From Our Experts: “We see many GMC Yukon owners come to us frustrated after being told they need a complex transmission rebuild. In many cases, the issue is purely electronic. The T42 TCM is the brain of the operation, and when it fails, it can mimic severe mechanical problems. Replacing it with a properly programmed unit like this one is often the most effective and economical repair, saving customers thousands and getting their trusted SUV back on the road quickly. Before you authorize a major repair, always consider the TCM.”
Frequently Asked Questions
What exactly does this Transmission Control Module do?
The TCM is the computer that controls your automatic transmission. It reads data from various sensors on the vehicle to determine the perfect time to shift gears, control fluid pressure, and engage the torque converter clutch, ensuring smooth and efficient operation.
Is this part difficult to install myself?
For most DIYers with basic tools, installation is straightforward and typically takes under 30 minutes. The module is usually located in the engine compartment next to the battery or on a strut tower. Always disconnect the battery before starting work.
Do I really not need to go to the dealership for programming?
That’s correct. We handle the programming for you before we ship the part. Simply provide your vehicle’s VIN during checkout, and the module will arrive ready for a plug-and-play installation, saving you time and money.
Will this fix a P0700 trouble code?
A P0700 code is a general transmission fault code, indicating that 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 specific secondary codes read by a scanner to confirm the diagnosis. A faulty TCM is a very common cause.
Is there a core charge for my old part?
No, there is no core charge required for this part. You can keep your old module without the hassle of returning it.
How do I ensure this is the right part for my vehicle?
This 2007-2009 GMC Yukon transmission control module is a direct fit for the specified models. You can also match the part numbers listed in the description to your old unit. If you’re unsure, our expert support team is here to help you confirm fitment.