Restore Your Vehicle’s Brain and Get Back on the Road with Confidence
As a technician with over two decades of experience under the hood, I’ve seen firsthand how a failing Engine Control Module (ECM) can turn a reliable vehicle into a source of constant frustration. If your 2015-2016 Cadillac Escalade ESV is experiencing perplexing issues like stalling, poor performance, or a persistent check engine light, the problem often lies with the vehicle’s central computer. This isn’t just a part; it’s the nerve center of your engine, and when it falters, everything else does too.
This is a dependable, direct-fit replacement Engine Control Module, part number 12673195. The most significant benefit we offer is our professional programming service. Before this module ships, we will flash it with the latest official GM software updates, precisely matched to your vehicle using your VIN. This critical step means you can avoid a costly trip to the dealership, saving you time, towing fees, and expensive labor charges. You’re getting a solution that’s ready for installation right out of the box.
Case Study: A Tricky Diagnosis
I remember a 2015 Silverado 1500 that came into the shop with an intermittent no-start condition that was driving the owner crazy. It would be fine for a week, then refuse to start for an hour. There were no consistent trouble codes, just a random U0100 (Lost Communication with ECM/PCM) that would pop up and disappear. We checked grounds, wiring, and power feeds for days. On a hunch, we connected a scope to the ECM’s internal 5-volt reference line. We found that on hot days, the voltage would become unstable and drop, causing the processor to crash. A replacement, properly programmed ECM like this one solved the problem permanently. These internal, heat-related failures are common and nearly impossible to spot without isolating the module itself.
Is Your Vehicle Showing These Symptoms?
A failing ECM can manifest in many ways. If you’re noticing any of the following, it’s a strong indicator that your engine computer needs attention:
- âś” Check Engine Light is on with codes like P0601, P0602, P0606, or other internal processor faults.
- âś” The engine cranks but refuses to start.
- âś” Unexplained stalling or rough idling, especially after the engine warms up.
- âś” A noticeable drop in fuel economy.
- âś” The transmission seems to shift erratically or harshly.
- âś” Communication errors with your scan tool (e.g., U0100).
A Straightforward Guide to Installation
Installing your new 2015-2016 Escalade ESV ECM is a manageable job for a DIY enthusiast or professional mechanic. Since we handle the programming, you skip the most complex step.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait a few minutes before beginning work.
- Locate the ECM: On the Escalade ESV and most compatible trucks/SUVs, the ECM is found in the LH (driver’s side) front of the engine compartment.
- Disconnect Connectors: Carefully unlatch and remove the electrical wiring harness connectors from the old module. Inspect them for any corrosion or damage.
- Remove the Old Module: Unbolt the old ECM from its mounting bracket. It’s typically held in by a few bolts.
- Install the New ECM: Mount your new, pre-programmed module in place and secure it with the bolts.
- Reconnect Everything: Firmly plug the wiring harnesses back into the new ECM until they click into place. Reconnect the negative battery terminal.
- Final Steps: In some cases, a security relearn procedure may be required for the vehicle to start. This procedure can often be done without special tools and instructions are widely available online or in service manuals.
Verified Vehicle Compatibility
This module is a direct replacement for part number 12673195 and is compatible with several other service numbers. It is guaranteed to fit the following vehicles, provided the part number or ID matches:
ATS (2014-2016, 3.6L)
CTS (2014-2016, 3.6L & 6.2L)
ESCALADE / ESCALADE ESV (2015-2016)
XTS (2014-2016, 3.6L)
Chevrolet:
CAMARO (2016, 6.2L)
COLORADO (2015-2016, 3.6L)
CORVETTE (2014-2016)
SILVERADO 1500 PICKUP (2014-2016)
SUBURBAN 1500 (2015-2016)
TAHOE (2015-2016)
GMC:
CANYON (2015-2016, 3.6L)
SIERRA 1500 PICKUP (2014-2016)
SIERRA DENALI 1500 (2014-2016)
YUKON / YUKON XL 1500 (2015-2016)
Frequently Asked Questions
What information do you need from me?
After you place your order, we require your 17-digit Vehicle Identification Number (VIN). This allows us to program the module with the exact software and calibrations for your specific vehicle configuration.
Is this part truly plug-and-play?
Because we program it to your VIN, it eliminates the need for dealer-level programming tools. In some GM vehicles, a simple ‘Security Relearn’ or ‘Crankshaft Position Variation Relearn’ may be needed after installation, which can often be done at home.
Will this fix my specific problem?
This module will correct issues directly caused by a faulty ECM, such as internal processor errors (P0601, etc.) and communication faults. It’s crucial to properly diagnose your vehicle, as other issues (like bad wiring or sensors) can cause similar symptoms.
Do I need to send my old module (core) back?
No core charge or return is required for this purchase. You can keep or dispose of your old module.
Where is the VIN located on my vehicle?
You can find your VIN on the driver’s side of the dashboard (visible through the windshield), on the driver’s side door jamb sticker, or on your vehicle’s registration and insurance documents.