Restore Peak Performance to Your Buick Lucerne
Is your 2006 Buick Lucerne suffering from frustrating issues like a persistent check engine light, erratic idling, stalling, or a no-start condition? These are classic signs of a failing Engine Control Module (ECM), the brain of your vehicle’s powertrain. Don’t let a faulty computer keep you off the road or lead to costly, incorrect repairs. This replacement 2006 Lucerne Engine Control Module is the reliable, straightforward solution you need to get your car running like new again.
As a technician with over two decades of experience, I’ve seen firsthand how a failing ECM can cause a cascade of confusing problems. A bad module can mimic other issues, leading owners and even some shops down a rabbit hole of replacing perfectly good sensors and parts. This module eliminates the guesswork. We take the hassle out of the repair by pre-programming this unit specifically to your vehicle’s VIN. This ensures it has the latest GM software updates and communicates flawlessly with your car’s other systems, from the transmission to the anti-lock brakes, right out of the box.
From the Diagnostic Bay: The Intermittent No-Start Mystery
A customer brought in a 2006 Lucerne with a 4.6L V8 that would intermittently refuse to start. There were no consistent codes, just a frustrating U0100 (Lost Communication with ECM) that would pop up now and then. We checked grounds, wiring, and power feeds—all were solid. The issue pointed to an internal failure in the original ECM, likely a cracked solder joint on the main board that would lose connection when temperatures changed. Instead of a complex board-level repair, the solution was a direct replacement. By installing a pre-programmed module like this one, we had the car fixed in under an hour. The customer saved hundreds on diagnostic time and dealership programming fees, and the problem never returned.
Common Signs of a Failing ECM
If your vehicle is exhibiting any of the following symptoms, a faulty engine computer could be the root cause. Replacing your 2006 Lucerne Engine Control Module can be the definitive fix.
- ✔ Persistent Check Engine Light (CEL)
- ✔ Engine stalling or misfiring for no apparent reason
- ✔ Drastic decrease in fuel economy
- ✔ Vehicle refuses to start, even with a good battery and starter
- ✔ Communication error codes, such as U0100
- ✔ Internal processor failure codes, including P0601, P0602, or P0606
- ✔ Harsh or incorrect shifting from the automatic transmission
A Straightforward Guide to Installation
One of the biggest benefits of this module is its simple, plug-and-play installation. Since we program it before shipping, you won’t need a trip to the dealership. For a 2006 Lucerne, the process is very accessible for a DIYer.
- Safety First: Always disconnect the negative terminal from your car’s battery and wait 10-15 minutes for the system capacitors to discharge.
- Locate the ECM: On the 2006 Lucerne, the ECM is typically found bolted to the lower part of the air cleaner box assembly in the engine bay.
- Disconnect the Harnesses: Carefully release the locking tabs on the electrical connectors and pull them straight out from the module. Avoid pulling on the wires themselves.
- Remove the Old Module: Unbolt the old ECM from its mounting bracket.
- Install the New Module: Mount your new, pre-programmed ECM in place of the old one and securely tighten the bolts.
- Reconnect and Finalize: Firmly plug the electrical harnesses back into the new module until they click into place. Reconnect your battery terminal. The vehicle is now ready to start.
Verified Vehicle Compatibility
This ECM is a direct replacement for service number 12590032 and is also interchangeable with the following part numbers: 12602044, 12603530, 12605843, 12607096, 12630457, and 19210737. It fits a wide range of GM vehicles. Please verify your model and options below:
This part will fit these makes and models with these options
ALLURE 08-09 Electronic Control Module; (lower air cleaner housing), 5.3L | COLORADO 08 Electronic Control Module; (RH firewall) | ENVOY 07-08 Electronic Control Module; 5.3L (LH engine) | ENVOY 08 Electronic Control Module; 4.2L (LH engine), ID 12607096 | G6 09 Electronic Control Module; (LH front engine compartment), 3.6L, ID 19210737 | MONTE CARLO 06 Electronic Control Module; (lower part of air cleaner box), 3.5L | XLR 09 Electronic Control Module; (RH front engine compartment), ID 12607096 | AURA 08-09 Electronic Control Module; (RH firewall), 2.4L, w/hybrid | DTS 06 Electronic Control Module | DEVILLE 05 Electronic Control Module; (LH engine compartment), ID 12590032 | G6 07 Electronic Control Module; (LH front engine compartment), 3.6L, ID 12605843 | IMPALA 06 Electronic Control Module; (lower part of air cleaner box), 3.5L | LACROSSE 08-09 Electronic Control Module; (lower air cleaner housing), 5.3L | STS 06 Electronic Control Module; (LH frame rail), 4.4L | TRAILBLAZER 08 Electronic Control Module; (LH engine), ID 12636660 | UPLANDER 09 Electronic Control Module; (LH engine compartment), (3.9L) | ISUZU ASCENDER 08 Electronic Control Module; (4.2L, LH engine), ID 19210737 | SAAB 9-7X 07 Electronic Control Module; (LH engine), 8 cylinder | TRAILBLAZER 07 Electronic Control Module; (LH engine), 5.3L | ENCLAVE 08 Electronic Control Module; (behind fan shroud), ID 19210737 | LUCERNE 08 Electronic Control Module; (lower part of air cleaner box), 4.6L, ID 12607096 | MONTE CARLO 06 Electronic Control Module; (lower part of air cleaner box), 3.9L | RAINIER 07 Electronic Control Module; (LH engine), 5.3L | ISUZU ASCENDER 08 Electronic Control Module; (4.2L, LH engine), ID 12607096 | CTS 06 Electronic Control Module; (RH engine compartment), V-Series, ID 12603530 | STS 08 Electronic Control Module; (LH frame rail), 4.6L | G6 06 Electronic Control Module; (LH front engine compartment), ID 12603530 | G6 08 Electronic Control Module; (LH front engine compartment), 3.6L | ION 06 Electronic Control Module; 2.4L (opt LE5) | MALIBU 06 Electronic Control Module; 3.9L | MALIBU 08 Electronic Control Module; new style (emblem in bumper cover), 2.4L, w/hybrid | RELAY 06 Electronic Control Module; (LH engine compartment), 3.9L | VUE 08-09 Electronic Control Module; 2.4L, VIN Z (8th digit, opt LAT) | OUTLOOK 08 Electronic Control Module; (behind fan shroud) | SOLSTICE 06 Electronic Control Module; (LH front frame rail) | VUE 08 Electronic Control Module; 3.6L | VUE 09 Electronic Control Module; 3.6L, VIN 7 (8th digit, opt LY7) | ACADIA 07-08 Electronic Control Module; (behind fan shroud), ID 12607096 (ECM) | AURA 08-09 Electronic Control Module; (RH firewall), 3.6L | ENVOY 08 Electronic Control Module; 4.2L (LH engine), ID 19210737 | G6 07 Electronic Control Module; (LH front engine compartment), 3.6L, ID 12603530 | GRAND PRIX 08 Electronic Control Module; (lower air cleaner box), 5.3L | HHR 06 Electronic Control Module; (LH rear engine compartment), 2.4L | STS 08 Electronic Control Module; (LH frame rail), 4.4L | G6 07 Electronic Control Module; (LH front engine compartment), 3.6L, ID 12590032 | ISUZU I-290 08 Electronic Control Module; (RH firewall) | LUCERNE 06 Electronic Control Module; (lower part of air cleaner box), 4.6L | MALIBU 09-10 Electronic Control Module; 2.4L, w/hybrid | UPLANDER 08 Electronic Control Module; (LH engine compartment), (3.9L), ID 19210737 | IMPALA 06 Electronic Control Module; (lower part of air cleaner box), 3.9L | MONTANA 06 Electronic Control Module; (LH engine compartment), (SV6), 3.9L | TRAILBLAZER 08 Electronic Control Module; (LH engine), ID 19210737 | ENVOY 08 Electronic Control Module; 4.2L (LH engine), ID 12636660 | G6 07 Electronic Control Module; (LH front engine compartment), 3.6L, ID 12602044 | TRAILBLAZER 08 Electronic Control Module; (LH engine), ID 12607096 | TRAILBLAZER 09 Electronic Control Module; (LH engine), 4.2L | CANYON 08 Electronic Control Module; (RH firewall) | COBALT 06 Electronic Control Module; (LH front engine compartment), 2.4L (VIN B, 8th digit, 4-146) | ISUZU I-370 08 Electronic Control Module; (RH firewall) | MALIBU 09 Electronic Control Module; 3.6L | SRX 08 Electronic Control Module; (LH engine compartment), (4.6L) | SAAB 9-7X 08 Electronic Control Module; (LH engine), 5.3L | ENCLAVE 08 Electronic Control Module; (behind fan shroud), ID 12607096 | G6 09 Electronic Control Module; (LH front engine compartment), 3.6L, ID 12607096 | IMPALA 08-09 Electronic Control Module; (lower part of air cleaner box), 5.3L | XLR 06 Electronic Control Module; (RH front engine compartment), 4.4L | XLR 08 Electronic Control Module; (RH front engine compartment) | ENVOY 09 Electronic Control Module; (LH engine), 4.2L | G6 07 Electronic Control Module; (LH front engine compartment), 3.6L, ID 12607096 | G6 07 Electronic Control Module; (LH front engine compartment), 3.6L, ID 12618163 | LUCERNE 08 Electronic Control Module; (lower part of air cleaner box), 4.6L, ID 19210737 | MONTANA 08-09 Electronic Control Module; (LH engine compartment) | PURSUIT 06 Electronic Control Module; (LH front engine compartment), 2.4L | VUE 10 Electronic Control Module; 3.6L | ACADIA 08 Electronic Control Module; (behind fan shroud), ID 19210737 (PCM) | DTS 08 Electronic Control Module | TERRAZA 06 Electronic Control Module; (LH engine compartment), 3.9L | TRAILBLAZER 07 Electronic Control Module; (LH engine), 6.0L | SAAB 9-7X 08 Electronic Control Module; (LH engine), 6.0L | HUMMER H3 08 Electronic Control Module; (RH firewall) | MALIBU 08 Electronic Control Module; new style (emblem in bumper cover), 3.6L | UPLANDER 08 Electronic Control Module; (LH engine compartment), (3.9L), ID 12607096 | UPLANDER 06 Electronic Control Module; (LH engine compartment), 3.9L
What does ‘VIN-Programmed’ mean for me?
What does ‘VIN-Programmed’ mean for me?
It means we load the module with the specific software and calibrations for your exact vehicle using your 17-digit Vehicle Identification Number (VIN). This ensures it works correctly with your engine, transmission, and options package, and includes the latest drivability and security updates from GM. It makes the installation plug-and-play.
Do I need to do anything after installing it?
No. Once installed, the module is ready to go. In some cases, your vehicle may need a security relearn procedure, which can typically be done without special tools by cycling the key. However, no expensive dealership programming or flashing is required.
Where is the ECM on a 2006 Buick Lucerne?
For the 2006 Lucerne, the Engine Control Module is located in the engine compartment, attached to the lower section of the air cleaner housing. This makes it relatively easy to access for replacement.
How do I provide my VIN?
After you complete your purchase, you will need to send us your vehicle’s 17-digit VIN. You can typically add this in the ‘notes to seller’ section during checkout or send us a direct message with your order number. We cannot ship the module until we have your VIN to program it.
