2016 Suburban 3500 Engine Control Module 12643636 | Programmed to Your VIN

Restore Your GM’s Drivability

Get a reliable, VIN-programmed Engine Control Module for your 2016 Suburban 3500 and other compatible GM vehicles. This module arrives flashed with the latest factory software, ready for a simple, plug-and-play installation. It’s the definitive fix for persistent check engine lights, stalling, and poor performance, saving you a costly trip to the dealership. Order today to get back on the road with confidence!

$225.95

+11.99 USPS Priority Shipping

Availability: In stock



SKU: 590-02768-22 Categories: ,
Guaranteed Safe Checkout

Restore Peak Performance to Your GM Vehicle

If you’re dealing with a frustrating check engine light, poor fuel mileage, or unpredictable stalling in your 2016 Suburban 3500, a failing Engine Control Module (ECM) is a likely culprit. As the brain of your vehicle’s engine, a faulty ECM can cause a cascade of problems that are often misdiagnosed. This isn’t just a replacement part; it’s a complete, reliable solution. We provide a high-quality ECM, part number 12643636, that is professionally programmed with the latest official GM software updates specifically for your vehicle’s VIN. This critical step ensures that all factory parameters for fuel delivery, ignition timing, and transmission shifting are perfectly restored, often fixing underlying drivability issues you may not have even realized were software-related.

Is Your GM Vehicle Showing These Symptoms?

Over my 20+ years in diagnostics, I’ve seen how a bad ECM can mimic dozens of other problems. Before you spend hundreds on sensors you don’t need, see if your vehicle is exhibiting these classic signs of ECM failure:

  • ✔ Persistent Check Engine Light (CEL) that won’t go away.
  • ✔ Diagnostic Trouble Codes (DTCs) related to internal module failure, such as P0601, P0606, or other P06xx codes.
  • ✔ Communication loss codes like U0100, indicating the ECM is not talking to other modules.
  • ✔ Unexplained stalling or rough idling.
  • ✔ Noticeable decrease in fuel economy.
  • ✔ Harsh or erratic automatic transmission shifting.
  • ✔ Engine cranks but refuses to start (no-start condition).
  • ✔ Failure to pass state emissions testing.

A Technician’s Notebook

I remember a 2015 Silverado 2500 with the 6.0L that came into the shop on a tow truck. The owner had already replaced the throttle body and MAF sensor trying to fix an intermittent stalling issue. His scanner showed no hard codes, just a history of random communication faults. After confirming power and ground to the ECM were solid, we knew the issue was internal. The module’s processor was failing under heat soak. We installed a VIN-programmed 2016 Suburban 3500 Engine Control Module (the same family of ECMs) and the truck fired right up and ran perfectly. The pre-programming saved the customer a tow to the dealership and a full day of lost time.

A Straightforward Guide to Installation

One of the biggest benefits of our service is that this 2016 Suburban 3500 Engine Control Module arrives ready for installation, with no dealership visit required. This saves you time and the high cost of dealer programming fees.

  1. Safety First: Disconnect the negative terminal from your vehicle’s battery and wait at least 15 minutes for the system capacitors to discharge.
  2. Locate the ECM: On most GM trucks and vans like the Suburban, Silverado, and Express, the ECM is located in the front of the engine compartment on the driver’s side, near the battery or airbox.
  3. Disconnect and Remove: Carefully unplug the wiring harness connectors. They have locking tabs that need to be released. Then, unbolt the old module from its mounting bracket.
  4. Install the New Module: Bolt your new, pre-programmed ECM into place. Securely reconnect the wiring harnesses, ensuring they click into place.
  5. Reconnect Power: Reattach the negative battery terminal.
  6. Final Steps: Turn the key to the ‘ON’ position (without starting) for 10 seconds, then ‘OFF’ for 10 seconds. Repeat this 2-3 times. Then, start the engine and let it idle for 5-10 minutes to complete the idle relearn process. Your vehicle is ready to drive.

Verified Vehicle Compatibility

This module is a direct replacement for part number 12643636 and several other interchangeable numbers, including 12668866, 12668994, 12663405, 12670335, 22819494, and 12692200. It is guaranteed to fit a wide range of GM vehicles. Please confirm your model and options below:

  • Chevrolet Suburban 3500: 2016
  • Chevrolet Silverado & GMC Sierra 2500/3500 (inc. Denali) w/ 6.0L: 2012-2016
  • Chevrolet Express & GMC Savana 2500/3500 Van w/ 4.8L or 6.0L: 2016
  • Chevrolet Cruze: 2012-2016 (various options, check your part number)
  • Chevrolet Sonic: 2012-2016 (various options, check your part number)
  • Chevrolet Trax: 2013-2016
  • Buick Encore (1.4L): 2013-2016
  • Cadillac ELR: 2014-2016
  • Chevrolet Volt: 2011-2015
  • Chevrolet Spark (gasoline): 2014-2015

Important: After purchasing, you must provide your Vehicle Identification Number (VIN) so we can program the module correctly before shipping. This ensures a perfect match for your vehicle’s specific configuration.

Frequently Asked Questions

How do I provide my VIN number?

After you complete your purchase, please send us a message with your 17-digit VIN. We cannot ship your order until we receive this information, as the programming is essential for the module to function in your vehicle.

Is any additional programming required after I install it?

No. This 2016 Suburban 3500 Engine Control Module is delivered fully programmed and ready for installation. In some cases, a security or crank position sensor relearn may be needed, which can be done with many common professional scan tools, but no dealer-level programming is required.

What if my original part number is different?

This module replaces several part numbers, including 12668866, 12668994, and others listed. As long as your vehicle is on the compatibility list, this module will work, as it will be programmed with the correct software for your VIN.

Will this fix my vehicle’s specific problem?

This part is a solution for a failed ECM. While it resolves the common symptoms listed, we always recommend a proper diagnosis by a qualified mechanic to confirm the ECM is the root cause of your issue before ordering.

Condition

Refurbished

Year
Genuine OEM

Yes

MPN

12643636

Interchange part number

PartNumber

590

Model

SUBURBAN 3500

Year

2012

Brand

GM

Manufacturer Part Number

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