Is Your Saturn Sky Running Rough? It Could Be The PCM.
If your 2008, 2009, or 2010 Saturn Sky is experiencing frustrating issues like a persistent check engine light, poor fuel economy, erratic shifting, or even a no-start condition, a failing Powertrain Control Module (PCM) is a very likely culprit. The PCM is the central brain of your vehicle, managing everything from fuel injection and ignition timing to transmission shift points and emissions controls. When it begins to fail, it can cause a cascade of problems that are often difficult to diagnose.
This is a direct-fit replacement Engine Control Module (ECM), also known as a PCM, for your vehicle. We take the guesswork out of the repair by programming this module specifically to your vehicle’s VIN. This ensures that it has the latest software updates from General Motors and will function seamlessly with your car’s existing systems, restoring its original performance and reliability.
From the Diagnostic Bay
We had a 2009 Pontiac Solstice (which shares the same platform and PCM as the Sky) come into the shop with a complaint of intermittent stalling at stoplights and a check engine light for a random misfire that just wouldn’t go away. The owner had already replaced plugs, coils, and even an O2 sensor. After hooking up our diagnostic scanner and seeing erratic data from multiple sensors, we suspected the PCM. We swapped in a VIN-programmed module just like this one, performed the security relearn, and the car ran perfectly. The stalling vanished, and the misfire code never returned. It’s a classic case of a failing computer causing phantom mechanical issues.
Symptoms of a Failing 2008-2010 Sky PCM
- ✔ Persistent Check Engine Light (CEL) with various trouble codes.
- ✔ Engine stalling, stuttering, or hesitating during acceleration.
- ✔ Noticeable decrease in fuel efficiency.
- ✔ Harsh or erratic automatic transmission shifting.
- ✔ Vehicle fails to start, even with a good battery and starter.
- ✔ Communication errors with diagnostic scan tools.
- ✔ Other warning lights on the instrument cluster may illuminate.
Plug-and-Play Solution with VIN Programming
Don’t waste time and money at the dealership. This module arrives at your door pre-flashed with the most current GM calibration for your specific vehicle. All you need to do is provide us with your VIN during checkout. This critical step ensures that the computer correctly manages your engine, transmission, and all related systems. This unit is a reliable replacement for multiple original service numbers, including 12612397, 12594750, 12597125, 12629019, 12635902, and 12611549.
While this module is programmed for your VIN, please be aware that on many GM vehicles, a simple security relearn procedure (often called a Passlock or anti-theft relearn) may be required after installation. This procedure can typically be done without special tools and involves a series of key cycles. In some cases, a Crankshaft Variation Relearn (CASE Relearn) may also be needed, which requires a capable scan tool.
Broad Compatibility Across the GM Lineup
While this is a perfect fit for the 2008-2010 Sky PCM, this versatile E37 controller was used in a wide variety of GM vehicles. This part is guaranteed to fit the following makes and models with the specified options:
- Aura: 2008-2009 (2.4L, w/o hybrid)
- Cobalt: 2007-2010 (2.2L, 2.4L)
- Express 1500 Van: 2008-2009 (4.3L)
- G5: 2007-2010
- G6: 2008-2010 (2.4L)
- HHR: 2007-2011 (2.2L, 2.4L)
- Impala: 2010-2011
- Lucerne: 2009-2011 (3.9L)
- Malibu: 2007-2012 (2.2L, 2.4L, 3.5L)
- Savana 1500 Van: 2008-2009 (4.3L)
- Sierra 1500 Pickup: 2007-2009 (4.3L)
- Silverado 1500 Pickup: 2007-2009 (4.3L)
- Solstice: 2008-2010 (2.4L)
- Vue: 2008-2010 (2.4L)
Frequently Asked Questions
What exactly does the PCM do?
The Powertrain Control Module (PCM) is your vehicle’s main computer. It controls the engine and transmission functions by reading data from sensors and making real-time adjustments to fuel delivery, spark timing, and shift patterns to ensure optimal performance, fuel economy, and emissions.
Does this module come ready to install?
Yes, this module is sold as a pre-programmed unit. We flash it with the latest GM software using the VIN you provide. This makes the installation process much simpler than buying a blank module. However, you may need to perform a security/anti-theft relearn procedure after installation, which can usually be done without special tools.
Will this fix my specific check engine light codes?
If the codes are related to internal module failure, processor errors, or communication faults (like U-codes), then replacing the PCM is often the correct fix. However, it’s crucial to properly diagnose the vehicle first. A PCM will not fix a check engine light caused by a faulty sensor, a bad catalytic converter, or a vacuum leak.
Where is the PCM located on my Saturn Sky?
On the 2008-2010 Saturn Sky and Pontiac Solstice, the Electronic Control Module is typically located on the LH (driver’s side) front frame rail, inside the engine compartment.
How do I provide my VIN?
You can add your 17-digit Vehicle Identification Number (VIN) in the notes section during checkout or send it to us in a message after your purchase. We cannot program and ship the module without your VIN.