Is Your GM Vehicle Running Rough?
If you’re dealing with a persistent check engine light, erratic engine behavior, poor fuel economy, or even a no-start condition in your Chevrolet Cobalt, Malibu, HHR, or other compatible GM vehicle, a failing Powertrain Control Module (PCM) is often the culprit. The PCM is the central computer of your vehicle, managing everything from fuel injection and ignition timing to transmission shifting. When it fails, it can cause a cascade of frustrating and difficult-to-diagnose issues. Don’t let a faulty computer keep you off the road. This direct-replacement PCM, part number 12597125, is the reliable solution to restore your vehicle’s performance and drivability.
From the Diagnostic Bay
We had a 2008 Chevy Cobalt come into the shop with a complaint of intermittent stalling at stoplights and a check engine light that would come and go. The customer had already replaced the spark plugs and an O2 sensor with no luck. Our scan tool pulled several communication error codes. After checking the wiring harness for damage, we suspected the PCM. Instead of a costly trip to the dealer, we sourced a pre-programmed module. After a straightforward installation and a quick security relearn procedure, the car ran perfectly. The stalling was gone, the codes were cleared, and the customer was back on the road the same day. A pre-programmed module was the key to an efficient and effective repair.
Why Choose Our Pre-Programmed 2007-2010 Cobalt PCM?
This isn’t just a generic, off-the-shelf part. We take the guesswork and extra expense out of the equation by programming this module specifically for your vehicle before it ever leaves our facility. Simply provide us with your 17-digit Vehicle Identification Number (VIN) during checkout, and our technicians will flash the unit with the latest, most stable software updates directly from GM. This ensures optimal performance, fuel efficiency, and compatibility, correcting many of the factory bugs that may have existed in your original unit.
Common Symptoms of a Failing GM PCM
- ✔ Persistent Check Engine Light (CEL) with various trouble codes.
- ✔ Rough or unstable engine idle.
- ✔ Unexplained stalling or engine hesitation.
- ✔ Decreased fuel economy.
- ✔ Harsh or erratic automatic transmission shifting.
- ✔ Engine fails to start, even with a good battery and starter.
- ✔ Communication errors with diagnostic scan tools.
Wide-Ranging GM Compatibility
This versatile module, identified by service number 12597125, is a direct replacement for a wide array of GM cars, trucks, and vans. It replaces multiple original service numbers, including 12612397, DL 216140, 12594750, 12629019, 12635902, and 12611549. While it is a perfect solution for the 2007-2010 Cobalt PCM, it also fits popular models such as:
- Chevrolet Silverado & GMC Sierra 1500 (4.3L)
- Chevrolet Malibu & Impala
- Chevrolet HHR & Express Van
- Pontiac G5, G6 & Solstice
- Saturn Aura, Sky & Vue
- Buick Lucerne
Please verify the fitment data on this page to ensure it matches your specific year, make, model, and engine combination. The key to a successful installation is a correctly programmed module, which we handle for you.
Frequently Asked Questions
Do I need to have this PCM programmed?
No. We program the module for you before shipping. All you need to do is provide your vehicle’s 17-digit VIN when you place your order. It will arrive ready for installation with the latest GM software.
What information do you need from me?
We require your complete 17-digit Vehicle Identification Number (VIN). This is critical for us to load the correct software and operating system for your vehicle’s specific configuration.
Will this fix my check engine light?
If the check engine light is caused by a faulty internal component of your original PCM, then this replacement part will solve the issue. However, if the light is on due to other failing sensors or mechanical problems, those will need to be addressed separately.
Is any additional setup required after I install it?
In many cases, you may need to perform a security relearn procedure, also known as a Passlock or anti-theft relearn. Some vehicles may also require a Crankshaft Variation Relearn (CASE relearn). These procedures can often be done without special tools and instructions are widely available online.
How do I confirm this is the right part for my vehicle?
The best way is to match the service number from the sticker on your original PCM to one of the numbers listed here (12597125, 12612397, etc.). You can also use the detailed fitment list on this page to confirm compatibility with your year, make, and model.