2017 Suburban ECM Engine Control Module 12678815

Restore Peak Performance to Your 2017 Suburban

Is your 2017 Chevrolet Suburban 1500 running rough, stalling, or displaying a persistent Check Engine Light? These are common indicators of a failing Engine Control Module (ECM), the central computer that manages your vehicle’s engine performance, fuel economy, and emissions. A faulty ECM can lead to a cascade of frustrating and potentially damaging issues, leaving you stranded and facing expensive diagnostic bills. This replacement Engine Control Module, part number 12678815, is the definitive solution to get your truck back to factory-spec operation.

Is Your Suburban’s ECM Failing?

Diagnosing an ECM failure can be tricky, as its symptoms often mimic other component failures. However, if you’re experiencing several of the following issues, the ECM is a likely culprit:

• ✔ Check Engine Light: The light is on, and you may have codes related to module communication errors (U-codes) or multiple, unrelated sensor failures.
• ✔ No-Start or Hard-Start: The engine cranks but refuses to start, or takes an unusually long time to fire up.
• ✔ Poor Engine Performance: Noticeable loss of power, hesitation during acceleration, or rough idling.
• ✔ Reduced Fuel Economy: Your fuel consumption has suddenly and inexplicably worsened.
• ✔ Intermittent Stalling: The engine shuts off unexpectedly while driving or when coming to a stop.
• ✔ Transmission Shifting Problems: The ECM communicates with the transmission controller, and a failure can cause harsh or erratic shifting.

The Plug-and-Program Solution for Your Truck

Don’t settle for a generic, unprogrammed module that will require expensive dealership intervention. We take the guesswork and hassle out of the process. When you purchase this 2017 Suburban ECM, we program it specifically for your vehicle using your unique Vehicle Identification Number (VIN). This ensures that the module arrives with the latest, most stable GM factory software and calibrations for your specific engine, transmission, and options package. This critical step guarantees proper communication between all vehicle modules and restores the precise performance your truck was designed to deliver.

What to Expect After Installation

Modern vehicles have sophisticated security systems to prevent theft. Because this ECM is a core component of that system, a Vehicle Theft Deterrent System (VTDS) relearn is required after installation. This procedure pairs the new ECM to your vehicle’s existing security components, including the ignition key and Body Control Module (BCM).

IMPORTANT: This relearn procedure must be performed by a qualified technician using a professional-grade scan tool with access to GM’s programming software (such as TIS2Web or Techline Connect). This is not a step that can be skipped. In some cases, other vehicle-specific setups may also be necessary, such as a crankshaft position sensor variation relearn or injector flow rate programming. These are standard procedures for ECM replacement and are the responsibility of the installer.

Guaranteed Fitment and Compatibility

This Engine Control Module is a direct replacement for a wide range of GM trucks and SUVs. It is compatible with the original part number 12678815 and also interchanges with the following part numbers:

• ✔ 12692068
• ✔ 12704476
• ✔ 12686382
• ✔ 12674052
• ✔ 12674472

This part is confirmed to fit the following vehicles:

• 2017 Cadillac Escalade & Escalade ESV
• 2017 Cadillac XTS (3.6L Twin Turbo)
• 2017 Cadillac CTS (6.2L Supercharged & 3.6L Twin Turbo)
• 2017 Cadillac ATS (3.6L Twin Turbo)
• 2017 Chevrolet Corvette
• 2017 Chevrolet Tahoe
• 2017 Chevrolet Suburban 1500
• 2016-2018 Chevrolet Silverado 1500 Pickup (check ID)
• 2016-2018 GMC Sierra 1500 Pickup (check ID)
• 2017-2018 GMC Sierra Denali 1500 (check ID)
• 2017 GMC Yukon & Yukon XL 1500