Is your 2008 or 2009 GMC Savana 1500 van running rough, stalling, or showing a persistent check engine light? These are classic signs of a failing Powertrain Control Module (PCM), the central computer responsible for managing your vehicle’s engine and transmission performance. A faulty PCM can lead to frustrating drivability issues, poor fuel economy, and even prevent your van from starting. This replacement PCM is the reliable, straightforward solution to restore your vehicle’s peak operational condition.
This unit is a direct replacement for service number 12597125 and is compatible with a wide range of GM vehicles. To ensure a seamless installation, we program the module specifically to your vehicle’s Vehicle Identification Number (VIN) before it ships. This critical step loads the correct factory software and calibrations for your Savana’s specific engine, transmission, and options, eliminating guesswork and the need for expensive dealership programming.
From the Diagnostic Bay
We had a 2009 Savana 1500 work van come into the shop that was a real head-scratcher. The owner reported intermittent stalling at stoplights and a random P0606 (Internal Control Module Processor Error) code that would come and go. We checked all the usual suspects – wiring, grounds, sensors – and everything tested fine. The problem was so intermittent, it was impossible to replicate consistently. On a hunch, we connected a data logger to monitor the PCM’s internal voltage and processor activity. After a long test drive, we caught it: a momentary drop in processor voltage right before a stall. The internal components of the original PCM were failing under load. We installed one of our pre-programmed modules, performed the security relearn, and the van has been running flawlessly for the client ever since. It’s a perfect example of how a failing computer can create ghost-like problems that are otherwise impossible to trace.
Common Symptoms of a Failing GM PCM
- ✔ Persistent Check Engine Light (CEL) illumination
- ✔ Engine stalling, misfiring, or running rough
- ✔ A noticeable decrease in fuel efficiency
- ✔ Harsh or erratic automatic transmission shifting
- ✔ The vehicle fails to start, even with a good battery and starter
- ✔ Communication errors with diagnostic scan tools
- ✔ Inaccurate instrument panel gauge readings
Your Solution: A Pre-Programmed 2008-2009 Savana 1500 PCM
Don’t let a faulty computer keep your work van or passenger van off the road. This replacement module is meticulously tested and prepared to be a plug-and-play solution. By providing us with your VIN during checkout, you receive a unit that is ready for installation. In most cases, you will only need to perform a simple security relearn procedure (often called a key relearn or anti-theft relearn), which can be done without special tools and typically takes about 30 minutes. This restores communication between the new PCM and your vehicle’s anti-theft system.
Wide Compatibility
This module is a direct replacement for multiple service numbers, including 12612397, 12594750, 12597125, 12629019, 12635902, and 12611549. It also fits a variety of other GM models, ensuring broad application and proven reliability. Please verify your service number or contact us with your VIN to confirm perfect fitment for vehicles such as:
- Chevrolet Silverado & GMC Sierra 1500 (4.3L)
- Chevrolet Malibu (2.2L, 2.4L, 3.5L)
- Chevrolet Cobalt (2.2L, 2.4L) & Pontiac G5/G6
- Chevrolet HHR (2.2L, 2.4L)
- Saturn Aura & Vue (2.4L)
- Pontiac Solstice & Saturn Sky (2.4L)
- Buick Lucerne (3.9L) & Chevrolet Impala
Frequently Asked Questions
What is a PCM and what does it do?
The Powertrain Control Module (PCM) is your vehicle’s main computer. It controls all aspects of engine and transmission function, such as fuel injection, ignition timing, emissions systems, and shift points, to ensure optimal performance, fuel economy, and low emissions.
Is this module ready to install when it arrives?
Yes! We program the module with the latest GM software using the VIN you provide. This means it’s flashed specifically for your vehicle’s configuration. You will likely need to perform a standard security relearn procedure after installation, which pairs the new computer to your keys and anti-theft system.
Where is the PCM located on my 2008-2009 Savana 1500?
On the 2008-2009 Savana 1500, the PCM is typically located in the engine compartment on the driver’s side, often near the rear of the engine bay or attached to the firewall.
What is the security relearn procedure?
The security relearn is a simple procedure that allows your vehicle’s anti-theft system to recognize the new PCM. It usually involves turning the key to the ‘ON’ position for 10-15 minutes, then ‘OFF’ for a few seconds, and repeating this cycle three times. Specific instructions for your vehicle are widely available online or in service manuals.
Do I need to send my old PCM back?
No core charge or return is required for this part. You can keep or responsibly dispose of your old module.