Restore Peak Performance to Your GM Vehicle
Is your Camaro, Silverado, or Corvette suffering from frustrating issues like a persistent check engine light, rough idling, stalling, or poor fuel economy? These are classic signs of a failing Engine Control Module (ECM), the computer that acts as your vehicle’s brain. A faulty ECM can disrupt everything from fuel injection to transmission shifting, leaving you with an unreliable and inefficient ride. Don’t let a bad module keep you off the road or force you into an expensive dealership visit.
This is a direct-fit replacement ECM, part number 12672963, that arrives at your door fully programmed with the latest official GM software. We take the guesswork and hassle out of the repair. Simply provide us with your vehicle’s VIN during checkout, and our experts will flash the module specifically for your car or truck. This ensures seamless communication between all vehicle systems and restores the precise performance you expect from your GM vehicle.
From the Diagnostic Bay: The Intermittent Stall That Fooled Everyone
A customer brought in their 2015 Sierra 1500 with a problem that had stumped two other shops: it would randomly stall at stoplights, but with no check engine light and no stored trouble codes. It was a ghost. We checked fuel pressure, ignition components, and sensors—all perfect. After hours of diagnostics, I noticed on a live data scan that the short-term fuel trim would flatline for a split second right before a stall. This pointed to the processor inside the ECM momentarily failing. We installed one of our VIN-programmed modules, and the problem vanished instantly. The customer saved hundreds in diagnostic fees and avoided a costly, unnecessary parts cannon approach.
Is Your Vehicle Showing These Symptoms?
- ✔ Check Engine Light (CEL) is illuminated, often with codes like P0601, P0606, or U0100.
- ✔ The engine cranks but refuses to start.
- ✔ Unexplained drops in fuel efficiency.
- ✔ Hesitation or stumbling during acceleration.
- ✔ Rough or erratic idling.
- ✔ Automatic transmission shifts harshly or at the wrong times.
- ✔ Failure to pass state emissions testing.
A Straightforward Guide to Installation
- ✔ Safety First: Disconnect the negative terminal from your vehicle’s battery and wait at least 15 minutes to allow all systems to discharge.
- ✔ Locate the ECM: On most compatible trucks and SUVs (Silverado, Sierra, Tahoe), the ECM is in the front left of the engine compartment. On cars like the Corvette, it’s often located under the dash on the passenger side cowl. Consult a vehicle-specific guide if you’re unsure.
- ✔ Disconnect Harnesses: Carefully release the locking tabs on the electrical connectors and pull them straight out from the module. Do not force them.
- ✔ Remove the Old Module: Unbolt the old ECM from its mounting bracket.
- ✔ Install the New Module: Mount your new, pre-programmed ECM and securely reconnect the electrical harnesses. You should hear or feel a click as they lock into place.
- ✔ Reconnect Battery: Reattach the negative battery terminal. The vehicle may require a security relearn procedure, which typically involves turning the key to the ‘ON’ position for 10-15 minutes.
Verified Vehicle Compatibility
This module is a direct replacement for part number 12672963 and is interchangeable with the following part numbers: 12692067, 12676230, 12656993, 12662034, 12672537, 12673195, 12663391, and 12669318. It is guaranteed to fit the following models:
CAMARO 16 (6.2L)
CANYON 15-16 (3.6L)
COLORADO 15-16 (3.6L)
CORVETTE 14-16
CTS 14-16 (3.6L, 6.2L)
ESCALADE & ESV 15-16
SIERRA 1500 & DENALI 1500 14-16
SILVERADO 1500 PICKUP 14-16
SUBURBAN 1500 15-16
TAHOE 15-16
XTS 14-16 (3.6L)
YUKON & YUKON XL 1500 15-16
Note: Please verify your specific engine and options against the detailed fitment list or contact us with your VIN.
Frequently Asked Questions
How does the VIN programming process work?
How does the VIN programming process work?
After you complete your purchase, you will need to send us your vehicle’s 17-digit VIN (Vehicle Identification Number). Our technicians use this number to load the latest, most stable GM-approved software for your exact vehicle configuration onto the module before we ship it. This ensures it works correctly right out of the box.
Is this a simple plug-and-play installation?
How does the VIN programming process work?
After you complete your purchase, you will need to send us your vehicle’s 17-digit VIN (Vehicle Identification Number). Our technicians use this number to load the latest, most stable GM-approved software for your exact vehicle configuration onto the module before we ship it. This ensures it works correctly right out of the box.
Will this fix my check engine light?
How does the VIN programming process work?
After you complete your purchase, you will need to send us your vehicle’s 17-digit VIN (Vehicle Identification Number). Our technicians use this number to load the latest, most stable GM-approved software for your exact vehicle configuration onto the module before we ship it. This ensures it works correctly right out of the box.
Do I need to send my old ECM back?
How does the VIN programming process work?
After you complete your purchase, you will need to send us your vehicle’s 17-digit VIN (Vehicle Identification Number). Our technicians use this number to load the latest, most stable GM-approved software for your exact vehicle configuration onto the module before we ship it. This ensures it works correctly right out of the box.