Is Your Buick Rendezvous Experiencing Engine Problems?
If you’re dealing with frustrating issues like a persistent check engine light, unexplained stalling, rough idling, or a complete no-start condition, a failing Engine Control Module (ECM) is often the culprit. As the central computer for your engine, its proper function is critical for performance, fuel economy, and reliability. When it fails, it can feel like your vehicle has lost its mind. I’ve seen it countless times in the shop: a perfectly good engine held hostage by a faulty computer.
This isn’t just an inconvenience; it’s a problem that can leave you stranded. You need a solution that is reliable, cost-effective, and gets you back on the road without the dealership hassle and expense.
The Direct-Fit, Programmed Solution
This is a thoroughly tested, used OEM Engine Control Module, service number 12592124, which is the direct replacement for part numbers including 12581144, 12588472, and 19260507. The most significant benefit we offer is our professional programming service. Before this module ever leaves our facility, we flash it with the latest official GM software calibrations, tailored specifically to your vehicle using the VIN you provide at checkout. This means it arrives at your door ready for a true plug-and-play installation.
- โ VIN-Programmed for Your Vehicle: No need for an expensive trip to the dealer for programming. It’s ready to install right out of the box.
- โ Solves Common Failure Symptoms: Effectively addresses issues like CEL illumination, stalling, hesitation, and communication error codes.
- โ Latest GM Software Updates: We ensure your module has the most current software, which can resolve factory bugs and improve performance.
- โ Cost-Effective Repair: Get an OEM-quality part and professional programming for a fraction of the cost of a new module from a dealership.
Expert Pro Tip from a 20-Year Technician
Before you install this replacement ECM, take a close look at the main engine wiring harness, specifically where it routes near the exhaust manifold or cylinder head. Over time, the protective loom can become brittle from heat, exposing the wires inside. An intermittent short from a bare wire touching the engine block is a common cause of ECM failure on these 3.6L platforms. A quick inspection and some high-temp electrical tape can prevent you from damaging your new module.
Easy Installation for Your 2004-2006 Rendezvous ECM
Installing this module is a straightforward process that you can do in your own driveway. On the Buick Rendezvous, the ECM is located in the engine compartment on the driver’s side, typically near the firewall or strut tower. Following these steps will ensure a smooth replacement.
- Safety First: Disconnect the negative terminal from your vehicle’s battery and wait at least 10 minutes to allow all system capacitors to discharge.
- Locate the ECM: Open the hood and find the module on the driver’s side (LH) of the engine compartment.
- Disconnect the Connectors: Carefully unlatch and remove the electrical connectors from the old ECM. Inspect the pins on the harness side for any corrosion or damage and clean them with a dedicated contact cleaner if necessary.
- Remove the Old Module: Unbolt the old ECM from its mounting bracket. There are typically a few 10mm bolts holding it in place.
- Install the New Module: Mount your new, pre-programmed ECM onto the bracket and secure it with the bolts.
- Reconnect Everything: Plug the wiring harness connectors firmly into the new module until they click into place. Reconnect the negative battery terminal.
- Final Step: Your vehicle is now ready to start. The security system may require a simple key cycle relearn procedure, which typically involves turning the key to the ‘ON’ position for 10-15 minutes.
Guaranteed Compatibility
This module is a confirmed fit for the following vehicles and engine options. Please verify your part number or contact us with your VIN if you are unsure.
- Buick Allure: 2005-2008 (3.6L)
- Buick LaCrosse: 2005-2008 (3.6L)
- Buick Rendezvous: 2004-2006 (3.6L, ID 19260507 or 3.6L option)
- Cadillac CTS: 2004-2007 (Base, ID 12592124 or 19260507)
- Cadillac SRX: 2004-2006 (3.6L)