Get Your Workhorse Back on the Road, Shifting Like New
Is your 2001-2005 Silverado or Sierra HD hesitating, shifting erratically, or stuck in limp mode? A faulty Transmission Control Module (TCM) can bring your powerful work truck to a grinding halt, costing you valuable time and money. This pre-programmed Allison TCM is the direct-fit, reliable solution to restore your truck’s legendary shifting performance and get you back on the job with confidence. We handle the complex programming for you; simply provide your vehicle’s VIN after purchase, and we’ll ship a unit that’s ready to install right out of the box.
Common Symptoms of a Failing Allison TCM & Your Solution
If you’re experiencing any of the following issues, a failing TCM is the most likely culprit. This module is the definitive fix for problems such as:
- Harsh or delayed shifting between gears
- The transmission getting stuck in one gear (limp mode)
- Inaccurate gear display on the dashboard
- No communication with the transmission module (DTC U0101)
- Check Engine Light with transmission-related trouble codes (P07xx series)
- Sudden downshifts or upshifts while driving
Don’t let a faulty computer sideline your truck. This Programmed Allison TCM for 2001-2005 Silverado Sierra is your solution to restore the crisp, decisive shifting you depend on. It replaces a wide range of original service numbers, including 15768288, 15163072, 15187104, and more, ensuring broad compatibility.
Features & Benefits
- โ VIN-Specific Programming: Arrives flashed with the latest GM software for your exact truck, ensuring perfect communication and performance.
- โ Eliminates Dealer Visits: No need for expensive trips to the dealership for programming. This module is a true plug-and-play solution.
- โ Restores Original Performance: Cures common Allison transmission issues like harsh shifting, hunting for gears, and limp mode.
- โ Direct-Fit Replacement: Designed to mount in the factory location on the LH fan shroud for a straightforward installation.
- โ Built for Durability: Engineered to withstand the demanding conditions of a heavy-duty work truck environment.
- โ Peace of Mind Included: This unit is backed by our one-year replacement warranty.
From the Expert’s Bench: The Allison 1000 is a legendary transmission, known for its brute strength. But its brain, the TCM, is what makes it smart. Over time, heat cycles and vibrations can degrade the sensitive electronics inside. We see it all the time โ a perfectly good mechanical transmission crippled by a faulty module. The most critical step in this repair is the programming. Using a generic or improperly flashed module can cause more problems than it solves. That’s why we insist on programming each Programmed Allison TCM for 2001-2005 Silverado Sierra to your specific VIN. It ensures all the shift points, torque converter lockup strategies, and sensor inputs are exactly what your truck’s powertrain expects, giving you a reliable repair that lasts.
Frequently Asked Questions
What do I need to do after I place my order?
After you complete your purchase, you must send us your 17-digit Vehicle Identification Number (VIN). We cannot ship your part until we have this information, as we use it to program the module specifically for your truck.
Is this part truly plug-and-play?
Yes. Because we pre-program the TCM to your vehicle’s VIN, it is ready for installation right out of the box. No further programming or dealer intervention is required. Simply install it, and you’re ready to go.
How do I know if my TCM is the problem?
Common signs include a check engine light, erratic shifting, getting stuck in a single gear (limp mode), or diagnostic trouble codes related to transmission solenoids or communication errors (like U0101). If your truck exhibits these symptoms, the TCM is a very likely cause.
Where is the TCM located on my 2001-2005 Silverado or Sierra?
As noted in the fitment guide, the Transmission Control Module is typically located on the driver’s side (LH) of the engine’s fan shroud.
My original part has a different service number. Will this still work?
Yes. This module is a direct replacement for a long list of service numbers, including 15768288, 15071240, 15163072, 15187104, and others listed in the description. The programming we perform makes it compatible with your vehicle’s system.