Is Your Cadillac Acting Up? Restore Peak Performance and Reliability.
If you’re dealing with a persistent check engine light, erratic engine behavior, or a frustrating no-start condition in your 2017 Escalade ESV, a failing Engine Control Module (ECM) is a very likely culprit. As the brain of your vehicle’s engine, when the ECM falters, it can cause a cascade of confusing and costly problems. This isn’t just an inconvenience; it’s a critical failure that compromises your vehicle’s performance and safety. We provide a direct, reliable solution: a replacement ECM, professionally programmed with the latest GM software specifically for your vehicle’s VIN.
The Right Part, Programmed Correctly the First Time
Forget the hassle and high cost of a dealership visit. We take the guesswork out of the repair. Simply provide us with your vehicle’s VIN during checkout, and our technicians will flash this module with the precise calibration and software updates from General Motors. This ensures that when the part arrives, it’s ready to communicate with the other systems in your vehicle. Over my 20+ years in diagnostics, I’ve seen countless issues arise from using generic, un-programmed modules. They often create more problems than they solve. Our process eliminates that risk.
Expert Pro Tip: Check Your Connections First
Before condemning your ECM, take a moment to inspect the main harness connectors at the module. I’ve seen cases where a slightly corroded pin or a loose connector caused intermittent communication errors that mimicked a bad ECM. Unplug the connectors (with the battery disconnected!), look for any green or white corrosion, and ensure they seat firmly with a solid ‘click’ upon reinstallation. A few minutes here can save you a lot of diagnostic headaches.
Symptoms of a Failing 2017 Escalade ESV ECM
A faulty engine computer can manifest in many ways. If you’re experiencing any of the following, this module is the solution you need:
- โ Unexplained Check Engine Light (CEL) with communication-related codes (like U-codes or P0600-P0606).
- โ Engine cranks but refuses to start.
- โ Poor fuel economy and noticeable loss of power.
- โ Stalling, stumbling, or rough idling.
- โ Harsh or incorrect automatic transmission shifting.
Simple Installation & Post-Install Procedures
Replacing the ECM is a straightforward process. While professional installation is always recommended, here are the general steps:
- Safety First: Always disconnect the negative terminal from your vehicle’s battery.
- Locate the ECM: On most compatible trucks and SUVs like the Escalade, Tahoe, and Sierra, the ECM is located in the engine compartment on the driver’s side, near the firewall or inner fender.
- Disconnect and Remove: Carefully unplug the electrical connectors. They have locking tabs that must be released. Then, unbolt the module from its mounting bracket.
- Install the New Module: Bolt the new, pre-programmed ECM into place and securely reconnect the electrical harnesses.
- Reconnect Battery: Re-attach the negative battery terminal.
IMPORTANT NOTICE: After installation, a ‘Vehicle Theft Deterrent System Relearn’ may be required. This is a standard security procedure on modern GM vehicles and is not a sign of a defective part. If your vehicle does not start after installation, this relearn must be performed by a technician with access to GM’s TIS2Web or Techline Connect software. Other procedures, such as a Crankshaft Position Variation Relearn or injector flow rate programming, may also be necessary depending on your specific vehicle and situation. The buyer is responsible for arranging these final setup procedures.
Guaranteed Compatibility
This module is a direct replacement for several part numbers, ensuring wide-ranging compatibility. It will fit if your original module has any of the following numbers:
12692068, 12704476, 12686382, 12674052, 12674472, 12678815
This part is confirmed to fit the following vehicles:
- 2017 Cadillac Escalade & Escalade ESV
- 2017 Cadillac XTS (3.6L Twin Turbo, VIN 8)
- 2017 Cadillac CTS (6.2L Supercharged or 3.6L Twin Turbo)
- 2017 Cadillac ATS (3.6L, VIN Y)
- 2017 Chevrolet Corvette
- 2017 Chevrolet Tahoe & Suburban 1500
- 2017 Chevrolet Silverado 1500
- 2017 GMC Yukon & Yukon XL 1500
- 2017 GMC Sierra 1500 & Sierra Denali 1500
- 2016 Chevrolet Silverado 1500 (with ID 12674472)
- 2016 GMC Sierra 1500 (with ID 12674472)
- 2018 Chevrolet Silverado 1500 (with ID 12686382)
- 2018 GMC Sierra 1500 & Sierra Denali 1500 (with ID 12686382)