Restore Peak Performance to Your Buick Lucerne
Is your 2008 Buick Lucerne running rough, stalling unexpectedly, or showing a persistent Check Engine Light? These aren’t just annoyances; they’re often symptoms of a failing Engine Control Module (ECM), the electronic brain of your vehicle. A faulty ECM can disrupt everything from fuel economy and transmission shifting to whether your car starts at all. This replacement 2008 Lucerne Engine Control Module is the reliable, straightforward solution to get your car running like new again, without the exorbitant costs and scheduling hassles of a dealership visit.
As a technician with over two decades of experience, I’ve seen countless drivers frustrated by elusive electronic issues. The problem often traces back to the ECM. That’s why we offer this high-quality replacement module, which comes fully programmed to your vehicle’s specific Vehicle Identification Number (VIN). We install the latest GM-certified software updates before it even leaves our facility. This means no extra programming or security relearn procedures are needed on your end. It’s a true plug-and-play fix.
Case Study: A Tricky Diagnosis
I remember a 2008 Lucerne with the 4.6L V8 that came into the shop. The owner was at his wit’s end. The car would randomly refuse to start, but only after it had been driven for a while and sat for about an hour—a classic case of heat soak. No codes were stored consistently, making it a nightmare to diagnose. After checking all the usual suspects (fuel pump, crank sensor), we focused on the ECM. By monitoring data streams, we saw that the module’s internal processor would simply stop communicating when it got hot. Swapping in a properly programmed ECM like this one solved the problem instantly. It’s a fix I’ve performed hundreds of time on these GM platforms.
Is Your Buick Showing These Telltale Signs?
A failing ECM doesn’t always cause a complete breakdown. Watch for these common indicators that your module may need replacement:
- ✔ Unexplained Check Engine Light illumination
- ✔ Stalling, stumbling, or hesitation during acceleration
- ✔ The engine cranks but refuses to start (no-start condition)
- ✔ Noticeable decrease in fuel mileage
- ✔ Harsh or erratic automatic transmission shifting
- ✔ Diagnostic Trouble Codes (DTCs) such as P0601 (Internal Memory Check Sum Error), P0606 (ECM/PCM Processor Fault), or U-series communication codes.
Your Straightforward Installation Guide
Replacing the ECM on your Lucerne is a job most DIYers can handle in under an hour with basic hand tools. For the 2008 Lucerne, the ECM is typically located in the lower part of the air cleaner box assembly.
- Safety First: Disconnect the negative terminal from your vehicle’s battery and secure it away from the post.
- Locate the Module: Open the hood and find the air cleaner housing. You will likely need to remove the top of the air filter box to access the ECM mounted below it.
- Disconnect the Harnesses: Carefully disengage the locking tabs on the electrical connectors and pull them straight out from the module. Never force them.
- Remove the Old ECM: Unbolt the mounting hardware that secures the old ECM to its bracket.
- Install the New ECM: Mount your new, pre-programmed module in place and tighten the bolts. Reconnect the electrical harnesses until they click securely.
- Final Steps: Reassemble the air cleaner housing and reconnect the negative battery terminal. The vehicle is now ready to start.
Verified Vehicle Compatibility List
This module is a direct replacement for service number 12590032 and is interchangeable with 12602044, 12603530, 12605843, 12607096, 12630457, and 19210737. It fits a wide range of GM vehicles. Please verify your specific model and options below.
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
Frequently Asked Questions
Why do you need my VIN?
Your VIN is essential for us to load the exact, correct software for your car’s specific options, engine, and transmission. This ensures perfect compatibility and function right out of the box.
Is this really a plug-and-play part?
Yes. Because we program it to your VIN before shipping, you will not need to take it to a dealer or mechanic for additional programming. Simply install it and start your vehicle.
Will this fix my Check Engine Light?
If the light is caused by an internal failure of the original ECM (like codes P0601 or P0606), this module will resolve the issue. We always recommend having a professional diagnosis to confirm the ECM is the root cause before ordering.
What if I have other modifications on my car?
This module is programmed with standard factory software. It is designed for vehicles with original factory equipment and settings.
Is there a core charge?
This listing does not require you to send back your old part, so there is no core charge or need to handle return shipping for your old module.