Programmed 2007 Equinox ECM Engine Control Module | Part #12597121

Restore Peak Performance to Your GM Vehicle with a VIN-Programmed Engine Control Module

If you’re dealing with a frustrating check engine light, erratic engine behavior, or a no-start condition in your 2007 Chevrolet Equinox, the root cause is often a failing Engine Control Module (ECM). As an experienced technician, I’ve seen firsthand how a faulty ECM can mimic a dozen other problems, leading to wasted time and money on incorrect repairs. This isn’t just a component; it’s the central computer for your engine, responsible for managing everything from fuel mixture and ignition timing to transmission shifts and emissions controls. When it fails, your vehicle’s reliability and performance suffer dramatically.

This replacement Engine Control Module is the definitive solution. We take the guesswork out of the repair by pre-programming the unit specifically for your vehicle using your VIN. This means it arrives loaded with the latest official GM software updates, ensuring optimal performance and compatibility right out of the box. You get a reliable, plug-and-play part that restores the precise, factory-spec operation your vehicle was designed for, without the exorbitant cost and hassle of a dealership visit.

Common Signs of a Failing ECM in Your GM Vehicle

• ✔ Persistent Check Engine Light (CEL) that won’t clear.
• ✔ Diagnostic Trouble Codes (DTCs) related to internal module failure, such as P0601, P0602, or P0606.
• ✔ Communication errors with scan tools (e.g., U0100).
• ✔ Unexplained drops in fuel economy.
• ✔ Engine stalling, stumbling, or misfiring for no apparent reason.
• ✔ Harsh or incorrect automatic transmission shifting.
• ✔ Complete no-start or no-crank condition where the battery and starter are known to be good.

A Straightforward Guide to Your ECM Swap

Installing your new 2007 Equinox ECM is a manageable job for a confident DIYer. For the 2007 Equinox and Torrent, the ECM is conveniently located in the left-hand (driver’s side) of the engine compartment.

1. Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait at least 10 minutes for the system capacitors to discharge.
2. Locate the ECM: On the Equinox/Torrent, it’s typically mounted near the firewall or strut tower on the driver’s side. For trucks and SUVs like the Silverado or Tahoe, it’s often under the battery tray.
3. Disconnect the Connectors: Carefully release the locking tabs on the wiring harness connectors and pull them straight out from the module. Inspect the pins for any corrosion or damage.
4. Remove the Old Module: Unbolt the old ECM from its mounting bracket.
5. Install the New Module: Mount your new, pre-programmed ECM and securely reconnect the wiring harnesses. You should hear a ‘click’ as they lock into place.
6. Reconnect the Battery: Re-attach the negative battery terminal.
7. Perform Security Relearn (If Necessary): Some GM vehicles may require a simple security relearn procedure. This typically involves turning the key to the ‘ON’ position for 10-15 minutes, then off, and repeating two more times before starting the engine. Consult your vehicle’s specific procedure if needed.

Verified Vehicle Compatibility List

This module is a direct replacement for part numbers 12589297, 12597121, 12603892, and 19210738. It is guaranteed to fit the following models:

• Cadillac: Escalade, Escalade ESV, Escalade EXT (2007)
• Chevrolet: Avalanche 1500, Corvette (2006-07), Equinox, Impala, Malibu, Monte Carlo, Silverado 1500/2500/3500, Suburban 1500/2500, Tahoe (2007)
• GMC: Sierra 1500/2500/3500, Sierra Denali, Yukon, Yukon XL 1500/2500 (2007)
• Hummer: H2 (2007)
• Pontiac: G6, G8 (2008), Torrent (2007)
• Saturn: Aura (2007)

Note: Please verify your specific engine and options against the fitment data. Providing your VIN during checkout is mandatory to ensure we send you a perfectly matched and programmed module.