Programmed 2009-2010 Sierra Denali ECM | 12629009 | Plug & Drive

Get Back on the Road with Confidence

Don’t let a faulty engine computer keep your Sierra Denali sidelined. This ECM arrives programmed to your specific VIN, ready to restore the power and reliability you depend on. Eliminate frustrating warning lights and performance issues. Order today and drive with peace of mind again.

$139.95

+11.99 USPS Priority Shipping

Availability: In stock



Guaranteed Safe Checkout

Restore Peak Performance to Your GM Truck or SUV

Is your 2009-2010 Sierra Denali, Silverado, or Tahoe suffering from frustrating issues like a persistent Check Engine Light, erratic idling, stalling, or a complete no-start condition? The Engine Control Module (ECM) is the brain of your vehicle, and when it fails, it can bring your powerful and dependable machine to a halt. This professionally programmed Engine Control Module is the definitive, hassle-free solution to get you back on the road with confidence and restore the performance you expect.

Common Symptoms of a Failing ECM & Your Solution

A faulty ECM can manifest in numerous ways, often mimicking other sensor or component failures. If you’re experiencing any of the following, a failing computer could be the culprit:

  • Check Engine Light with Diagnostic Trouble Codes (DTCs) like P0601, P0602, P0606, or other internal processor faults.
  • Unexplained stalling or engine hesitation during acceleration.
  • Rough or inconsistent idling.
  • Noticeable decrease in fuel economy.
  • Poor transmission shifting or performance.
  • Intermittent or total loss of communication with diagnostic scan tools.

This isn’t just a replacement part; it’s a complete, ready-to-install solution. We take a genuine OEM engine computer and flash it with the latest GM-approved software updates, then program it specifically to your truck’s Vehicle Identification Number (VIN). This critical step ensures seamless communication between all your vehicle’s modules, just like the original, making this the most reliable fix for your 2009-2010 Sierra Denali ECM issues.

Features & Benefits

  • ✔ VIN-Programmed for Your Vehicle: This module arrives ready for installation, pre-flashed with your truck’s specific VIN. This eliminates the need for expensive and time-consuming dealership programming.
  • ✔ Loaded with Latest GM Software: Your ECM comes with the most current software from General Motors, ensuring optimal fuel efficiency, emissions control, and engine performance.
  • ✔ Direct OEM Fitment: Guaranteed to match the original form and function for part numbers 12629009 and 12625455, ensuring a straightforward installation process.
  • ✔ Broad GM Compatibility: While a perfect solution for the 2009-2010 Sierra Denali ECM, this unit is also the correct component for a wide range of GM trucks, vans, and SUVs from the same era. Please verify your part number and check the detailed fitment list.
  • ✔ Backed by Our Warranty: This unit is backed by our one-year replacement warranty, giving you peace of mind with your purchase.

Expert Technician’s Insight

As a technician with over two decades of experience, I can’t stress enough the importance of proper programming. An ECM is the central command center. Simply swapping a used one from another truck will cause a cascade of errors and a no-start condition due to security mismatches. Our VIN-programming service handles this complex process for you, ensuring the new ECM ‘shakes hands’ with your truck’s security system, ignition, and other modules correctly from the moment you connect it.

Frequently Asked Questions

Do I need to do any programming myself?

No. We program the ECM to your vehicle’s VIN before shipping. In most cases, you will only need to perform a simple security relearn procedure, which can often be done without special tools and takes about 30 minutes. We can provide instructions for this process.

How do I provide my VIN?

After you complete your purchase, please send us a message with your 17-digit Vehicle Identification Number (VIN). We cannot ship your order until we receive this information to ensure correct programming.

Is this a new or used part?

This is a quality, tested OEM component that has been professionally programmed with the latest vehicle-specific software. It is guaranteed to perform to factory specifications and resolve issues related to a faulty 2009-2010 Sierra Denali ECM.

Will this fix my specific problem?

This ECM will resolve issues directly caused by a faulty engine computer, such as internal processor faults (e.g., DTC P0606). While it corrects many common problems, we always recommend a proper diagnosis by a qualified technician to confirm the ECM is the root cause before ordering.

Where is the ECM located on my 2009 Sierra?

On most 2009-2010 GM trucks and SUVs like the Sierra, Silverado, and Tahoe, the ECM is located in the engine compartment on the driver’s side, near the front, often attached to the fuse box assembly or inner fender.

Brand

GM

Year
Condition

Refurbished

Year

2009

MPN

12629009

Model

Sierra Denali

Hardware Type

Genuine OEM

Yes

Interchange part number

PartNumber

590

Manufacturer Part Number

,

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