Is Your Sierra 1500 Running Rough or Showing a Check Engine Light?
If you’re dealing with frustrating engine problems in your 2016-2018 GMC Sierra 1500โlike a persistent check engine light, poor fuel economy, erratic shifting, or even a no-start conditionโa failing Engine Control Module (ECM) is often the culprit. As the central computer for your truck’s engine, its proper function is critical. When it fails, it can cause a cascade of issues that are often misdiagnosed, leading to expensive and unnecessary repairs on other components.
The Simple, Reliable Solution: A VIN-Programmed ECM
This isn’t just a replacement part; it’s a complete solution. We take a genuine GM ECM and professionally program it to your truck’s specific Vehicle Identification Number (VIN) before it ever leaves our facility. This crucial step ensures that the module communicates perfectly with your truck’s existing systems, just like the original one did from the factory.
- โ VIN Programmed for Your Truck: Simply provide your VIN during checkout, and we handle the complex programming. This ensures compatibility and proper function.
- โ Loaded with Latest GM Software: Your ECM will arrive with the most current GM calibrations, which can resolve drivability issues and bugs present in older software versions.
- โ Restores Peak Performance: A correctly functioning ECM is key to restoring your engine’s power, efficiency, and smooth operation.
- โ Direct-Fit Replacement: Guaranteed to be a direct replacement for part numbers 12692068, 12704476, 12686382, 12674052, 12674472, and 12678815.
Why Choose Our 2016-2018 Sierra 1500 ECM?
With over 20 years of hands-on diagnostic experience, I’ve seen how a faulty ECM can throw mechanics and owners for a loop. This module is the brain of your operation, and when it’s not right, nothing else will be. We provide a part that eliminates the guesswork and the need for expensive dealership programming.
Real-World Diagnostic Story
“A customer’s 2017 Sierra 1500 came into the shop last month with a check engine light and a complaint of poor acceleration. They had already replaced two oxygen sensors and the mass airflow sensor at another shop, but the problem persisted. A quick scan showed communication errors with the powertrain network. Instead of just throwing more parts at it, we tested the ECM’s driver circuits and found they were failing intermittently. A new, properly programmed ECM like this one solved the problem instantly. It’s a classic case where diagnosing the ‘brain’ first saves hundreds in wasted parts and labor.”
Installation and Required Procedures
Physically installing the ECM is straightforward. However, please be aware that modern GM vehicles have sophisticated anti-theft systems that are tied to the ECM. This is a critical security feature that must be addressed after installation.
Post-Installation Steps (Your Responsibility)
IMPORTANT: After installing this module, you or your mechanic will need to perform a Vehicle Theft Deterrent Relearn procedure. This synchronizes the new ECM with your truck’s security system. If this step is not performed, the vehicle will not start.
- This relearn must be done using a professional GM-approved diagnostic tool with access to TIS2WEB or Techline Connect.
- Other relearns, such as a Crankshaft Position Variation Relearn or injector flow rate programming, may also be necessary depending on your vehicle’s specific configuration and stored diagnostic codes.
- It is the buyer’s responsibility to ensure these final integration steps are completed by a qualified technician. We provide the correctly programmed part; the final vehicle-side relearns are an essential part of the installation process.
Guaranteed Fitment For These Part Numbers:
This module is a direct replacement for the following GM part numbers:
12692068, 12704476, 12686382, 12674052, 12674472, 12678815
This part will fit these makes and models with these options
ESCALADE 17 Electronic Control Module; (engine compartment)
ESCALADE ESV 17 Electronic Control Module; (engine compartment)
XTS 17 Electronic Control Module; (3.6L), VIN 8 ( 8th digit, opt LF3 )
TAHOE 17 Electronic Control Module; (LH front engine compartment)
YUKON 17 Electronic Control Module; (LH front engine compartment)
CTS 17 Electronic Control Module; 6.2L ( supercharged )
CORVETTE 17 Electronic Control Module; (RH cowl under dash)
SIERRA 1500 PICKUP 16 Electronic Control Module; (LH front engine compartment), ID 12674472
SUBURBAN 1500 17 Electronic Control Module; (LH front engine compartment)
SILVERADO 1500 PICKUP 16 Electronic Control Module; (LH front engine compartment), ID 12674472
CTS 17 Electronic Control Module; 3.6L, VIN 8 ( 8th digit, opt LF3, twin turbo )
SIERRA 1500 PICKUP 17 Electronic Control Module; (LH front engine compartment)
YUKON XL 1500 17 Electronic Control Module; (LH front engine compartment)
SIERRA DENALI 1500 17 Electronic Control Module; (LH front engine compartment)
ATS 17 Electronic Control Module; (LH engine compartment), 3.6L, VIN Y ( 8th digit, opt LF4 )
SILVERADO 1500 PICKUP 17 Electronic Control Module; (LH front engine compartment)
SIERRA 1500 PICKUP 18 Electronic Control Module; (LH front engine compartment), ID 12686382
SIERRA DENALI 1500 18 Electronic Control Module; (LH front engine compartment), ID 12686382
SILVERADO 1500 PICKUP 18 Electronic Control Module; (LH front engine compartment), ID 12686382