Programmed 2001-2005 Silverado 2500 Transmission Control Module 15163072

Restore Your Allison’s Smooth Shifting

End frustrating limp mode and harsh shifting in your 2001-2005 GM HD truck. This Transmission Control Module comes fully pre-programmed to your truck’s VIN with the latest GM software updates. It’s a direct-fit, plug-and-play solution that eliminates the need for an expensive dealership visit. Get your workhorse back on the road with the reliability you depend on. Order today to get your truck back in top form!

$500.00

+11.99 USPS Priority Shipping

Availability: In stock



SKU: 591-06773-18 Categories: ,
Guaranteed Safe Checkout

Restore Peak Performance to Your Allison Transmission

Is your 2001-2005 Silverado or Sierra HD truck suffering from erratic shifting, getting stuck in limp mode, or throwing transmission codes? Before you suspect a costly mechanical failure, the problem is often the electronic brain of your transmission—the Transmission Control Module (TCM). After 20+ years in the shop, I’ve seen countless Allison transmissions get a new lease on life with a simple TCM replacement. This isn’t just a part; it’s a direct solution to restore the crisp, reliable shifting your workhorse truck is known for.

We take the biggest headache out of the repair process. This module arrives at your door pre-programmed with the latest GM software updates specifically for your truck. Just provide your Vehicle Identification Number (VIN) during checkout, and our experts will handle the complex flashing process. This means no expensive trip to the dealership, no special scan tools required for programming—just a straightforward installation to get you back on the road and back to work.

A Technician’s Notebook: The Intermittent Limp Mode Mystery

A customer brought in his ’04 Silverado 2500 with a frustrating problem: it would randomly go into limp mode, usually after towing his trailer for about an hour. He’d already replaced the NSBU switch and fluid with no luck. We scanned it and found a history of code P0700 and a U0100 (Lost Communication with ECM/PCM). Instead of jumping to a transmission teardown, we monitored the TCM data stream. We noticed the module would drop communication when it got hot. The TCM, mounted on the fan shroud, is subject to intense heat cycles. Over time, internal solder joints can crack, causing these exact intermittent failures. We installed a pre-programmed TCM, and the truck has been shifting perfectly for him ever since. It’s a classic case where understanding the component’s weaknesses leads to a fast, accurate diagnosis and repair.

Is Your Truck Showing These Symptoms?

A failing TCM can manifest in several ways. If you’re experiencing any of the following, this module is the likely solution for your 2001-2005 Silverado 2500 Transmission Control Module issues:

  • ✔ Harsh or delayed shifting between gears
  • ✔ Transmission stuck in one gear (limp mode)
  • ✔ Flashing “Tow/Haul” light
  • ✔ Check Engine Light with transmission-related DTCs (e.g., P0700, P0751, P0841, U0100)
  • ✔ No communication with the TCM via a scan tool
  • ✔ Inaccurate gear display on the instrument cluster

A Straightforward Guide to Installation

One of the best features of this part is the simple installation process. Because we program it for you, it’s a true plug-and-play fix that a confident DIYer or any professional mechanic can complete quickly.

  1. Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts.
  2. Locate the TCM: On these GM HD trucks, the Transmission Control Module is typically mounted on the driver’s side of the radiator fan shroud.
  3. Disconnect Connectors: Carefully unclip the two large electrical connectors from the old module. Inspect the connectors for any corrosion or damage.
  4. Remove the Old Module: Unbolt the old TCM from its mounting bracket on the fan shroud. It’s usually held on by a few small bolts.
  5. Install the New Module: Mount your new, pre-programmed TCM onto the bracket and secure it with the bolts.
  6. Reconnect and Finalize: Firmly plug the electrical connectors into the new module until they click. Reconnect your battery terminal. Start the truck and test drive to confirm smooth shifting has been restored.

Guaranteed Fitment for Your GM HD Truck

This module is a direct-fit replacement for vehicles equipped with the 5-speed Allison automatic transmission (RPO code M74). It is compatible with a wide range of service numbers, ensuring broad applicability.

Chevrolet Silverado 2500 HD: 2001-2005 (with 5-Speed Allison M74)
Chevrolet Silverado 3500: 2001-2005 (with 5-Speed Allison M74)
GMC Sierra 2500 HD: 2001-2005 (with 5-Speed Allison M74)
GMC Sierra 3500: 2001-2005 (with 5-Speed Allison M74)

Replaces Service Numbers (SERV NO): 15768288, 15071240, 15163072, 15163073, 15169833, 15169834, 15169835, 15183963, 15187103, 15187104, 29537441, 09385220, 09387820

Do I need to do anything after I install this 2001-2005 Silverado 2500 Transmission Control Module?
No. Since we program the module to your specific VIN before shipping, it is ready for installation right out of the box. No further programming or dealer visits are required. A transmission fast learn or relearn procedure with a capable scan tool can sometimes be beneficial but is often not necessary.

What information do you need from me?
After you complete your purchase, you must provide us with your 17-digit Vehicle Identification Number (VIN). This is critical for us to load the correct GM-certified software for your truck’s specific configuration.

Is this a guaranteed fix for my transmission problems?
This TCM is a common and highly effective solution for the symptoms listed, such as limp mode and erratic shifting. However, proper diagnosis is key. These issues can also be caused by bad solenoids, wiring problems, or internal mechanical faults. This part resolves failures within the module itself.

Where is my VIN located?
You can find your VIN on the driver’s side of the dashboard (visible through the windshield), on the driver’s side door jamb sticker, or on your vehicle’s registration and insurance documents.

Will this work for the 6-speed Allison transmission?
No, this specific module is only for the 5-speed Allison (RPO code M74) found in 2001-2005 GM HD trucks. The 6-speed Allison, introduced later, uses a different TCM. Please verify your transmission type before ordering.

Genuine OEM

Yes

MPN

15163072

Interchange part number

Condition

Refurbished

PartNumber

591

Model

Silverado 2500 Pickup

Make

Year

2005

Brand

CHEVROLET TRUCK

Manufacturer Part Number

, , , , , , , , , , , ,

Scroll to Top