Restore Peak Performance to Your Buick Lucerne
Is your 2006 Buick Lucerne experiencing frustrating issues like a persistent Check Engine Light, rough idling, stalling, or a complete no-start condition? These are classic signs of a failing Engine Control Module (ECM), the central computer of your vehicle. A faulty ECM can cripple your car’s performance, fuel economy, and reliability. This isn’t just an inconvenience; it’s a problem that needs a definitive solution. This replacement 2006 Lucerne Engine Control Module is the reliable, professional-grade fix you need to get your vehicle running smoothly again.
A Technician’s Notebook: The Case of the Intermittent Lucerne
A customer brought in a 2006 Lucerne with a problem that had stumped two other shops: it would randomly stall at stoplights, but only when the engine was fully warm. There were no consistent trouble codes, just a history of random communication errors. After hours of checking wiring and sensors, I focused on the ECM. On these models, heat soak from the engine can cause internal solder joints on the circuit board to fail intermittently. We swapped in a pre-programmed ECM, and the problem vanished. It’s a perfect example of how a failing computer can create ghost-like symptoms that are impossible to pin down without addressing the core component.
Why VIN-Specific Programming is Non-Negotiable
Don’t settle for a generic, unprogrammed module that will leave you stranded and require an expensive trip to the dealership. We take the guesswork and hassle out of the process. Before we ship your part, we use your vehicle’s unique VIN to flash this ECM with the latest, most stable software updates directly from GM. This ensures that your engine, transmission, anti-theft system, and other vehicle electronics communicate flawlessly from the moment of installation. This is the key to a successful, lasting repair.
Is Your Vehicle Showing These Symptoms?
A failing ECM can manifest in many ways. If you’re experiencing any of the following, it’s highly likely your engine computer is the culprit:
- ✔ Check Engine Light is on with codes like P0601 (Internal Control Module Memory Check Sum Error), P0606 (ECM/PCM Processor Fault), or various communication codes (U-codes).
- ✔ The engine cranks but refuses to start.
- ✔ Unexplained drops in fuel efficiency.
- ✔ The vehicle stalls unexpectedly while driving or at idle.
- ✔ Harsh or erratic automatic transmission shifting.
- ✔ Noticeable loss of power and poor acceleration.
A Straightforward Guide to Installation
Installing your new 2006 Lucerne Engine Control Module is a manageable job for a DIYer with basic tools. On the 2006 Lucerne, the ECM is typically located in the engine bay, situated within the lower part of the air cleaner box assembly.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before beginning any work on the electrical system.
- Locate the ECM: Open the hood and find the air cleaner assembly. You will likely need to remove the top portion of the air filter box to access the module below it.
- Disconnect the Wiring: Carefully unplug the electrical connectors from the old ECM. These connectors have locking tabs that must be released before they can be pulled free. Avoid forcing them.
- Remove the Old Module: Unbolt the old ECM from its mounting bracket. Keep the hardware, as you may need it for the new installation.
- Install the New ECM: Mount the new module in place and securely fasten it. Reconnect the electrical connectors, ensuring they click firmly into place.
- Reconnect Power: Reassemble the air cleaner box and reconnect the negative battery terminal.
- Perform Security Relearn: In many GM vehicles, a simple security relearn procedure is required. 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 owner’s manual for the specific procedure for your vehicle.
Verified Vehicle Compatibility
This ECM is a direct replacement for a wide array of General Motors vehicles. It is interchangeable with the following service part numbers: 12590032, 12602044, 12603530, 12605843, 12607096, 12630457, and 19210737. Please see the extensive list below to confirm fitment for your specific make, model, and engine option.
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
Do I need to take this ECM to a dealer for programming?
Do I need to take this ECM to a dealer for programming?
No. We handle the programming for you before shipment. Simply provide us with your vehicle’s VIN during checkout, and the module will arrive ready for installation with the latest GM software.
What is a VIN and where do I find it?
The VIN (Vehicle Identification Number) is a unique 17-digit code for your car. You can typically find it on a small plate on the driver’s side of the dashboard (viewable through the windshield), on the driver’s side door jamb sticker, or on your vehicle’s registration and insurance documents.
Is this a difficult part to replace myself?
For someone with basic mechanical skills, this is a very manageable job. It typically involves removing the air filter housing, disconnecting a few electrical plugs, and unbolting the module. Our step-by-step guide above provides a clear overview of the process.
Will this part fix my check engine light?
If the check engine light is caused by an internal failure of the ECM (such as codes P0601-P0606), then yes, this replacement module will solve the problem. However, it’s always best to have the codes scanned to ensure the issue isn’t with a sensor or other component.
What does ‘interchangeable service number’ mean?
Manufacturers often release updated versions of a part over time. The interchangeable service numbers listed (e.g., 12590032, 12607096) are all functionally identical to 12603530 and are approved by GM as direct replacements. This module is a compatible replacement for any of those part numbers.