2012-2016 Sierra Denali 3500 ECM 22819494 | VIN Programmed

Is Your Sierra Denali 3500 Sidelined? Get it Back to Work.

Your 2012-2016 Sierra Denali 3500 is more than just a truck; it’s a critical tool for your work and life. When it starts acting up—stalling unexpectedly, refusing to start, shifting erratically, or flashing a persistent Check Engine Light—the problem often points directly to a failing Engine Control Module (ECM). As the brain of your truck’s 6.0L engine, the ECM governs everything from fuel injection and spark timing to transmission shifting. When it fails, your powerful workhorse can become an unreliable, oversized paperweight.

The Dealership Hassle vs. The Direct Solution

Getting a replacement ECM from a dealership often involves multiple trips, high costs for the part, and expensive programming fees. We eliminate that entire process. This is a direct-fit Engine Control Module, part number 22819494, that arrives at your doorstep fully programmed to your truck’s specific Vehicle Identification Number (VIN). We install the latest, most stable GM-certified software, ensuring optimal performance and compatibility right out of the box. You get a reliable fix without the dealership price tag or wait time.

Why Choose Our 2012-2016 Sierra Denali 3500 ECM?

This isn’t just a replacement part; it’s a complete solution designed to get you back on the road with confidence. Here’s what sets our service apart:

• ✔ VIN-Specific Programming: We flash the module with your truck’s exact VIN, ensuring all factory options and systems communicate correctly.
• ✔ Latest GM Software: Your ECM comes loaded with the most recent software updates from General Motors, addressing known bugs and improving engine efficiency and performance.
• ✔ No Dealer Visit Needed: Since the programming is done before we ship, you can install it yourself or have your local mechanic do it without needing a special GM diagnostic tool for setup.
• ✔ Direct-Fit Guarantee: This module is a direct replacement for a wide range of original part numbers, including 12668866, 12668994, 12643636, and 22819494.
• ✔ Solves Common Issues: Effectively resolves problems like harsh shifting, poor fuel economy, intermittent stalling, and various diagnostic trouble codes (DTCs).

Plug-and-Play Installation: Get Back on the Road Fast

Installing your new ECM is a straightforward process. While professional installation is always an option, many of our customers are able to perform the swap themselves in under an hour.

1. Safety First: Disconnect the negative terminal from your truck’s battery to prevent any electrical shorts.
2. Locate the ECM: On your Sierra, the ECM is typically located in the front left (driver’s side) of the engine compartment.
3. Disconnect Connectors: Carefully release the locking tabs and unplug the wiring harnesses from the old module. Inspect the connectors for any corrosion or damage and clean if necessary.
4. Remove Old Module: Unbolt the old ECM from its mounting bracket.
5. Install New Module: Bolt the new, pre-programmed ECM into place and securely reconnect the wiring harnesses. You should hear a ‘click’ as they lock in.
6. Reconnect Battery: Reattach the negative battery terminal. The vehicle may need to complete a security relearn procedure, which can often be done by cycling the key. Instructions will be provided.

By purchasing this 2012-2016 Sierra Denali 3500 ECM, you are choosing a reliable, cost-effective repair that restores your truck’s factory performance. Simply provide your VIN at checkout, and we’ll handle the rest. Don’t let a faulty computer keep your truck down. Order today and get back to work.