Restore Your Vehicle’s Heartbeat and Drive with Confidence
Is your vehicle suffering from perplexing issues like a persistent check engine light, rough idling, stalling, or a complete no-start condition? These frustrating problems often point to a failing Powertrain Control Module (PCM), the central computer of your engine. This isn’t just an inconvenience; it’s a compromise on your vehicle’s reliability and your peace of mind. Our pre-programmed PCM, service number 12597125, is the definitive solution, engineered to restore your vehicle’s factory performance and get you back on the road with confidence.
We take the guesswork and complexity out of the repair. Simply provide your vehicle’s VIN during checkout, and our expert technicians will flash the module with the latest GM-certified software specific to your car. It arrives at your doorstep ready for a straightforward installation, eliminating the need for expensive dealership programming or specialized tools. This is more than just a part; it’s a complete, hassle-free solution to bring your engine back to life.
Warning Signs Your PCM Needs Attention
- ✔ Unexplained stalling or rough running conditions.
- ✔ Failure to communicate with diagnostic scan tools.
- ✔ Intermittent or persistent Check Engine Light (CEL).
- ✔ Diagnostic Trouble Codes (DTCs) such as P0601, P0602, P0606, or other communication errors.
- ✔ Noticeable decrease in fuel economy or engine power.
- ✔ Harsh or erratic transmission shifting behavior.
Guided Installation to Restore Your Ride
Replacing your 2009-2011 Lucerne PCM is a manageable task for a confident DIYer. Follow these steps for a successful installation.
- Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts.
- Locate the Module: On the Buick Lucerne, the PCM is typically found attached to the lower part of the air cleaner box in the engine bay. For other models, its location may vary (e.g., LH front under battery for Silverado).
- Disconnect and Remove: Carefully unplug the electrical connectors. They have locking tabs that need to be released. Once disconnected, unbolt the old module and remove it from the vehicle.
- Install the New PCM: Mount your new, pre-programmed PCM in the same location. Secure the bolts and firmly reconnect the electrical harnesses until they click into place.
- Reconnect Power: Reattach the negative battery terminal and tighten it securely.
- Perform Security Relearn: Your vehicle will likely require a simple security relearn procedure to recognize the new module. 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 exact procedure.
An Expert’s Note on Intermittent Faults
“I once worked with a customer whose Malibu would randomly stall at traffic lights, but never stored a clear trouble code. We checked everything—fuel pump, sensors, wiring—and couldn’t find the culprit. The issue was intermittent and maddening. On a hunch, we swapped in a known-good PCM, and the problem vanished instantly. The old module had an internal fault that only appeared when it heated up. This pre-programmed unit is the perfect fix for those ‘ghost’ problems that defy traditional diagnostics, saving you hours of frustration and restoring that dependable feeling you need from your car.”
Tailored Fit for Your GM Vehicle
This module is a direct-fit replacement for service number 12597125 and is compatible with several other service numbers, including 12612397, 12594750, 12629019, 12635902, and 12611549. It is designed for a wide range of GM models. Please verify your vehicle is on the list below:
- AURA: 2008-2009 (2.4L, w/o hybrid)
- COBALT: 2007-2008 (2.2L), 2008 (2.4L), 2009-2010 (2.2L)
- EXPRESS 1500 VAN: 2008-2009 (4.3L)
- G5: 2007 (2.2L), 2008-2010
- G6: 2008-2009 (2.4L), 2010
- HHR: 2007-2011 (2.2L), 2008-2011 (2.4L)
- IMPALA: 2010-2011
- LUCERNE: 2009-2011 (3.9L) – Your primary fitment for the 2009-2011 Lucerne PCM.
- MALIBU: 2007 (2.2L), 2008 (Classic, 2.2L), 2008 (New Style, 2.4L), 2009-2010 (2.4L), 2010 (3.5L), 2011-2012 (2.4L)
- SAVANA 1500 VAN: 2008-2009 (4.3L)
- SIERRA 1500 PICKUP: 2007-2009 (4.3L, w/o hybrid)
- SILVERADO 1500 PICKUP: 2007-2009 (4.3L, w/o hybrid)
- SKY: 2008-2010 (2.4L)
- SOLSTICE: 2008-2010 (2.4L)
- VUE: 2008-2010 (2.4L)
Frequently Asked Questions
What exactly is VIN programming?
VIN programming is the process of loading your vehicle’s specific software and settings onto the PCM using your unique 17-digit Vehicle Identification Number (VIN). This ensures the module communicates perfectly with your car’s engine, transmission, and security systems, just like the original one did from the factory.
Will I need to perform any additional procedures after installation?
Yes, in most cases, you will need to perform a security relearn procedure, also known as a key relearn. This is a simple process that syncs the new PCM with your vehicle’s anti-theft system and can typically be done without any special tools. We recommend searching for the specific procedure for your model year online or in your owner’s manual.
Where is the PCM located on my 2010 Buick Lucerne?
For the 2009-2011 Buick Lucerne, the Powertrain Control Module is conveniently located on the lower portion of the air cleaner box assembly in the engine compartment, making it relatively easy to access for replacement.
Will this part fix my check engine light?
If the check engine light is caused by an internal failure of the PCM (indicated by codes like P0601 or P0606), then this replacement module will solve the problem. However, if the light is on due to a faulty sensor or other component, that issue will still need to be addressed separately.
My original module has a different service number. Will this still work?
Yes, this module is a direct replacement for a range of service numbers, including 12612397, 12594750, 12629019, and others listed. As long as your vehicle is on our compatibility list, this PCM will function correctly once programmed to your VIN.