Programmed 2004-2006 Rendezvous ECM 19260507 | Engine Computer

Restore Your Vehicle’s Core Performance

Is your Buick Rendezvous, Cadillac CTS, or other compatible GM vehicle giving you headaches? If you’re dealing with frustrating issues like stalling, rough idling, a persistent check engine light, or a complete no-start condition, the problem often points directly to a failing Engine Control Module (ECM). As a technician with over two decades of experience, I’ve seen 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 brain of your engine, and when it falters, your vehicle’s reliability disappears.

This is a dependable, tested, and used OEM Engine Control Module, part number 19260507 (also compatible with service numbers 12581144, 12588472, and 12592124). The most significant benefit we offer is our professional programming service. Before this module ships, we flash it with the latest official GM software updates, tailored specifically to your vehicle using the VIN you provide. This critical step ensures seamless communication between the ECM and your vehicle’s other systems, saving you a costly trip to the dealership for programming.

Common Signs of a Failing Engine Computer

If you’re noticing any of the following symptoms, a faulty ECM is a likely cause. A replacement is often the most direct and effective solution.

• ✔ Check Engine Light is illuminated with codes like P0601 (Internal Control Module Memory Check Sum Error) or P0606.
• ✔ The engine cranks but refuses to start.
• ✔ Unexplained drops in fuel economy.
• ✔ The vehicle stalls unexpectedly while driving or at idle.
• ✔ Noticeable loss of power and poor acceleration.
• ✔ Automatic transmission shifts erratically or harshly.
• ✔ Communication errors with your scan tool.

A Straightforward Guide to Installation

Replacing the ECM on these vehicles is a job most DIYers can handle with basic tools. Our pre-programming makes it even simpler. Here’s a general guide:

1. Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
2. Locate the ECM: On the Buick Rendezvous, the ECM is typically found in the engine compartment on the driver’s side (LH), often near or under the air cleaner housing. Consult a repair manual for your specific model’s exact location.
3. Disconnect Connectors: Carefully unlatch and remove the electrical wiring harnesses connected to the old module. Inspect the connectors for any corrosion or damage.
4. Remove the Old Module: Unbolt the old ECM from its mounting bracket. It’s usually held in place by a few small bolts or nuts.
5. Install the New Module: Mount your replacement 2004-2006 Rendezvous ECM in the same location and secure it with the original hardware.
6. Reconnect Everything: Firmly plug the wiring harnesses back into the new module. Reconnect the negative battery terminal.
7. Perform Security Relearn: You will likely need to perform a simple security relearn procedure to sync the new ECM with your vehicle’s anti-theft system. This typically involves turning the key to the ‘ON’ position for 10-15 minutes. Instructions are readily available online for your specific model.

Verified Vehicle Compatibility

This module is a direct-fit replacement for a range of GM vehicles. To ensure perfect compatibility, please match your vehicle and part number from the list below. Providing your VIN at checkout is mandatory for us to program the correct software for your vehicle’s specific options.

• Buick Allure: 2005-2008 (3.6L)
• Buick LaCrosse: 2005-2008 (3.6L)
• Buick Rendezvous: 2004-2005 (with ID 19260507)
• Buick Rendezvous: 2006 (3.6L)
• Cadillac CTS: 2004-2007 (Base, with ID 12592124 or 19260507)
• Cadillac SRX: 2004-2006 (3.6L)

This part is the solution for your vehicle’s performance problems. By ordering a reliable, pre-programmed 2004-2006 Rendezvous ECM, you’re choosing a cost-effective and efficient repair.