Is Your Buick Rendezvous Acting Up?
If you’re dealing with frustrating issues like intermittent stalling, a persistent check engine light that won’t go away, rough idling, or a complete no-start condition, a failing Engine Control Module (ECM) is often the culprit. In my 20+ years of diagnostics, I’ve seen how a faulty ECM can mimic a dozen other problems, leading to wasted time and money on unnecessary repairs. It’s the brain of your engine, and when it starts to fail, your vehicle’s performance and reliability suffer dramatically.
The Simple, Reliable Solution: A VIN-Programmed ECM
Forget about expensive dealership visits and the hassle of finding a shop that can program a replacement module. This is a thoroughly tested, used OEM Engine Control Module that we program specifically for your vehicle using your VIN. We install the latest GM-certified software updates, ensuring your engine runs as efficiently and smoothly as possible. This isn’t just a part; it’s a complete, ready-to-install solution.
Expert Pro Tip: Protect Your New Module
Before you install this replacement ECM, take 10 minutes to inspect the engine wiring harness, especially around the connectors for the ignition coils and fuel injectors. Over the years, I’ve diagnosed dozens of repeat ECM failures caused by a shorted wire in the harness that wasn’t found the first time. A quick visual check for brittle, cracked, or exposed wiring can prevent damage to your new module and save you from doing the job twice.
Why Choose Our 2004-2006 Rendezvous ECM?
This module is the definitive fix for a wide range of engine management problems. We take all the guesswork out of the repair, delivering a part that’s ready for installation right out of the box.
- โ VIN-Programmed for You: We flash the module with your vehicle’s specific VIN, ensuring perfect communication with other onboard systems.
- โ Latest GM Software: Comes with all the newest drivability and performance updates from General Motors.
- โ Eliminates Dealer Programming: This is a true plug-and-play solution. No need for expensive scan tools or a trip to the dealership.
- โ Solves Common Symptoms: Effectively resolves issues like false sensor codes, poor fuel economy, erratic shifting, and engine performance problems.
- โ Guaranteed Compatibility: This part, 12592124, is a direct replacement for service numbers 12581144, 12588472, and 19260507.
Plug-and-Play Installation: Get Back on the Road Fast
Installing your pre-programmed 2004-2006 Rendezvous ECM is a straightforward process you can do at home. Just follow these simple steps:
- Safety First: Disconnect the negative terminal from your vehicle’s battery and wait at least 15 minutes for the system to fully discharge.
- Locate the ECM: On the 2004-2006 Rendezvous, the ECM is typically found in the engine compartment on the driver’s side (LH), often near the air cleaner housing.
- Disconnect and Remove: Carefully unplug the electrical connectors. There are usually locking tabs that need to be released. Once disconnected, unbolt the old module from its mounting bracket.
- Install the New ECM: Mount your new, pre-programmed ECM in place and securely fasten the bolts. Reconnect the electrical connectors, making sure they click firmly into place.
- Reconnect Battery: Reattach the negative battery terminal. The vehicle may need to perform a simple security relearn procedure, but in most cases, our programming handles this, allowing you to simply start the vehicle.
Verified Vehicle Fitment
While this is a core part for the Buick Rendezvous, this versatile ECM also fits a range of other GM vehicles. Please verify your part number or contact us with your VIN to ensure 100% compatibility.
- Buick Allure: 2005-2008 (3.6L)
- Buick LaCrosse: 2005-2008 (3.6L)
- Buick Rendezvous: 2004-2006 (3.6L, ID 19260507)
- Cadillac CTS: 2004-2007 (Base, ID 12592124 or 19260507)
- Cadillac SRX: 2004-2006 (3.6L)
Don’t let a bad computer keep your vehicle off the road. Order this fully programmed 2004-2006 Rendezvous ECM and restore your vehicle’s proper function and reliability today.