Restore Your Vehicle’s Heartbeat and Drive with Confidence
Is your vehicle suffering from frustrating, intermittent issues like stalling, poor fuel economy, or a persistent check engine light? A failing Powertrain Control Module (PCM) can feel like a complex, expensive problem, but the solution is simpler than you think. This replacement PCM, service number 12612397, is the central command unit for your engine. We take the guesswork and dealership hassle out of the equation by pre-programming it specifically to your vehicle’s VIN with the latest GM software updates. This isn’t just a part; it’s a renewed sense of reliability for your daily drive.
Warning Signs Your PCM Needs Attention
A faulty engine computer can manifest in numerous ways. If you’re experiencing any of the following, it’s a strong indicator that your PCM is the culprit:
- ✔ Unexplained Check Engine Light illumination.
- ✔ Diagnostic Trouble Codes (DTCs) such as P0601, P0606, or communication-related errors.
- ✔ Rough idling, engine stalling, or hesitation during acceleration.
- ✔ A noticeable drop in fuel efficiency.
- ✔ The engine cranks but refuses to start.
- ✔ Transmission shifting problems or harsh gear changes.
An Expert’s Note: The Ghost in the Machine
“I once worked with a customer whose Chevy HHR had a maddening stalling issue that only happened on hot days after 20 minutes of driving. No codes, no warning lights—just a dead engine in traffic. We checked everything: fuel pump, sensors, wiring. Finally, we swapped in a pre-programmed PCM like this one. The problem vanished instantly. The original module had a hairline crack in the circuit board that only separated when it got hot. This part didn’t just fix his car; it gave him back the freedom to drive without constantly worrying about getting stranded.”
Guided Installation to Restore Performance
Getting your vehicle back to peak condition is straightforward. While professional installation is always an option, this process is designed to be as simple as possible for the confident DIYer.
- Provide Your VIN: After your purchase, it is essential to send us your vehicle’s 17-digit VIN. We cannot ship your part until we program it with this information.
- Disconnect the Battery: Before starting any work, always disconnect the negative battery terminal to prevent electrical shorts. Safety first!
- Locate and Remove the Old PCM: Find the existing module. On many vehicles, like the Saturn SKY, it’s on the LH front frame rail. Carefully disconnect the wiring harnesses and unbolt the unit from its mounting bracket.
- Install the New Module: Mount your new, pre-programmed PCM in the same location. Securely reconnect the wiring harnesses, ensuring the clips click into place.
- Reconnect the Battery: Reattach the negative battery terminal.
- Perform Idle Relearn (If Necessary): Start the vehicle and let it idle for 5-10 minutes. This allows the computer to learn the engine’s idle parameters. In many cases, your vehicle is now ready to drive. Some vehicles may require a security or crankshaft position sensor relearn procedure, which can be done with a capable scan tool.
Tailored Fit for Your GM Vehicle
This module is a direct replacement for service numbers 12612397, 12597125, 12594750, 12629019, 12635902, and 12611549, ensuring broad compatibility. It is guaranteed to fit the following models and configurations:
- Saturn SKY (2008-2010) – 2.4L
- Chevrolet Cobalt (2007-2010) – 2.2L, 2.4L
- Chevrolet HHR (2007-2011) – 2.2L, 2.4L
- Chevrolet Malibu (2007-2012) – 2.2L, 2.4L, 3.5L
- Chevrolet Impala (2010-2011)
- Chevrolet Silverado 1500 (2007-2009) – 4.3L
- Chevrolet Express 1500 Van (2008-2009) – 4.3L
- GMC Sierra 1500 (2007-2009) – 4.3L
- GMC Savana 1500 Van (2008-2009) – 4.3L
- Pontiac G5 (2007-2010)
- Pontiac G6 (2008-2010) – 2.4L
- Pontiac Solstice (2008-2010) – 2.4L
- Saturn Aura (2008-2009) – 2.4L (w/o hybrid)
- Saturn Vue (2008-2010) – 2.4L
- Buick Lucerne (2009-2011) – 3.9L
Choosing our programmed 2008-2010 Saturn SKY PCM means you’re getting a reliable, fully updated component that restores function and gets you back on the road quickly and affordably.
Frequently Asked Questions
Do I need to do anything after installing this PCM?
In most cases, the module is plug-and-play. However, some vehicles may require a Crankshaft Position Sensor (CASE) relearn or a security relearn procedure, which can be performed with a compatible high-level scan tool. This is often necessary to clear specific trouble codes after installation.
Why do you need my VIN?
Your Vehicle Identification Number (VIN) is crucial. It allows us to load the exact software and calibrations specified by GM for your vehicle’s engine, transmission, and options. This ensures perfect compatibility and performance, just like the original part.
Will this fix my car’s specific problem?
This PCM is a direct solution for issues caused by a faulty engine computer. While it resolves a wide range of common symptoms like stalling and no-start conditions, it’s important to ensure your vehicle has been properly diagnosed. This part will not fix problems related to other faulty components like sensors or wiring.
Is this a new or used part?
This is a high-quality, inspected, and tested recycled OEM component. Each unit is verified for full functionality before being programmed with the latest software for your vehicle, offering OEM reliability at a fraction of the cost.
What is the difference between a PCM, ECM, and ECU?
The terms are often used interchangeably. PCM (Powertrain Control Module) typically controls both the engine and transmission. ECM (Engine Control Module) or ECU (Engine Control Unit) usually refers to a module that only controls engine functions. For the vehicles listed, this module functions as the PCM.