Restore Peak Performance to Your GM HD Truck
Is your 2001-2005 Silverado or Sierra HD suffering from erratic shifting, getting stuck in limp mode, or throwing confusing transmission codes? A failing Transmission Control Module (TCM) is one of the most common culprits, leaving your powerful workhorse feeling unreliable and weak. This isn’t just an inconvenienceโit’s a threat to your productivity and peace of mind. Get your truck’s brain back in order with this direct-fit, VIN-programmed 2001-2005 Silverado 2500 transmission control module, the definitive solution to restore the crisp, dependable shifting you rely on.
Common Symptoms of a Failing Allison TCM & Your Solution
If you’re experiencing any of the following issues, a faulty TCM is the likely cause. This module is the solution to get your truck back on the road and running strong:
- Harsh or delayed shifting between gears
- Truck gets stuck in one gear (Limp Mode)
- Illuminated Check Engine Light or Service Engine Soon light
- Transmission-related Diagnostic Trouble Codes (DTCs) such as P0700, P0751, P0756, or U0101
- Inaccurate or erratic speedometer readings
- Complete loss of transmission function
Features & Benefits
- โ VIN-Specific Programming: We flash this module with the latest GM software updates using your truck’s unique VIN. This ensures perfect compatibility and function right out of the box.
- โ True Plug-and-Play Installation: Because it arrives pre-programmed, you can skip the expensive trip to the dealership for coding. Simply install the part and you’re ready to go.
- โ Restored Drivability: Eliminates harsh shifts and hunting for gears, restoring the smooth, predictable performance of your Allison transmission.
- โ Guaranteed Compatibility: A direct replacement for a wide range of service numbers including 15768288, 15071240, 15163072, 15163073, 15169833, and more.
- โ Reliable Solution: This 2001-2005 Silverado 2500 transmission control module is your key to resolving persistent electronic transmission faults and getting your dependable truck back.
- โ Peace of Mind: This unit is backed by our one-year replacement warranty.
Expert Insight: The Key to a Lasting Fix
We’ve seen countless owners of these tough GM trucks chase shifting problems by replacing solenoids and sensors, only to have the issues return. The Allison transmission is a legend, but its electronic brainโthe TCMโis a known failure point after years of heat cycles and vibration. A properly programmed replacement isn’t just a part; it’s a permanent solution that addresses the root cause, ensuring you can trust your truck whether you’re towing a heavy load or just heading to the job site.
Don’t let a faulty computer sideline your essential vehicle. This 2001-2005 Silverado 2500 transmission control module is the most effective way to restore your truck’s performance and your confidence in its ability to get the job done.
Frequently Asked Questions
Do I need to program this module?
No. This is the biggest benefit of our service. We professionally program the module to your vehicle’s specific VIN before we ship it. It arrives ready for a plug-and-play installation, with no need for an expensive trip to a dealership.
How do I provide my VIN?
After you complete your purchase, you can add your 17-digit Vehicle Identification Number (VIN) to the order notes or reply to your order confirmation email. We cannot ship your part until we receive the VIN to ensure correct programming.
Is this the correct part for my truck?
This module fits 2001-2005 Chevrolet Silverado 2500/3500 and GMC Sierra 2500/3500 pickups equipped with the 5-speed Allison automatic transmission (RPO code M74). Please verify your vehicle’s year and transmission type before ordering.
Will this fix my harsh shifting and limp mode issues?
In the vast majority of cases, yes. A failing TCM is the most common cause of electronically-controlled shifting problems like these. However, you should always ensure there are no underlying mechanical issues with your transmission.
What is the warranty on this part?
This unit is backed by our one-year replacement warranty, giving you confidence in your repair.
Where is this module located on the truck?
On these GM HD trucks, the Transmission Control Module is typically located on the driver’s side of the fan shroud in the engine bay for cooling.