Is Your Pontiac G5 Acting Up? Let’s Get It Fixed.
If you’re dealing with a frustrating check engine light that won’t go away, rough idling, stalling, or transmission shifting problems, the culprit is often the vehicle’s main computer. The Powertrain Control Module (PCM) is the brain of your 2007-2010 Pontiac G5, and when it starts to fail, it can cause a host of confusing and expensive issues. Don’t let a faulty module keep you off the road. This is the straightforward, reliable solution you’ve been looking for.
The Dealer-Free Solution: Programmed & Ready to Install
We take the biggest headache out of replacing a PCM: the programming. Dealerships can charge hundreds for this service alone. We eliminate that cost and hassle. Simply provide us with your vehicle’s VIN during checkout, and our technicians will flash this module with the latest, most stable GM-certified software specifically for your car. It arrives at your door ready to install, making this a true plug-and-play repair for the 2007-2010 G5 PCM.
A Real-World Scenario from My Shop
“A customer brought in a 2009 Chevy Cobalt—which uses the same family of PCM as the G5—with a bizarre issue. It would randomly lose power and the gauges would flicker, but there were no consistent trouble codes. After checking all the grounds and power feeds, we suspected the PCM. We swapped in one of our pre-programmed modules, and the car ran perfectly. The internal processor was failing intermittently under load, a common issue I’ve seen in these E37/E67 family modules after years of heat cycles. This part solves that exact problem.”
Key Features & Benefits
- ✔ VIN-Programmed for Your G5: Arrives ready for installation with the latest GM software updates, ensuring optimal performance and compatibility.
- ✔ No Dealer Visit Required: Save hundreds of dollars by skipping the expensive dealership programming fees.
- ✔ Solves Common Issues: A direct fix for symptoms like check engine lights (P0600-P0606 codes), harsh shifting, poor fuel economy, and no-start conditions.
- ✔ Broad Compatibility: This module, service number 12597125, directly replaces a wide range of original part numbers, including 12611549.
- ✔ Restores Factory Performance: Get your vehicle’s drivability, fuel efficiency, and emissions systems working as they should.
Plug-and-Play Installation: Get Back on the Road Fast
- Safety First: Disconnect the negative battery terminal and wait 10 minutes for the system to fully discharge.
- Locate the PCM: On the Pontiac G5, the PCM is typically located in the left-hand (driver’s side) front of the engine compartment.
- Disconnect Connectors: Carefully release the locking tabs and unplug the wiring harnesses from the old module. Inspect the connectors for any corrosion or bent pins.
- Swap the Module: Unbolt the old PCM and secure the new one in its place.
- Reconnect & Finalize: Plug the wiring harnesses firmly into your new PCM and reconnect the negative battery terminal. A security relearn procedure may be required, which typically involves turning the key to the ‘ON’ position for 10-15 minutes.
Guaranteed Fitment for Your Vehicle
This Electronic Control Module is a direct-fit replacement for the original computer in many GM vehicles. While this listing is for the 2007-2010 G5 PCM, it also fits the following models. Please verify your vehicle and options below. This part replaces service numbers: 12612397, 12594750, 12597125, 12629019, 12635902, and 12611549.
- Pontiac G5 (2007-2010)
- Chevrolet Cobalt (2007-2010)
- Chevrolet HHR (2007-2011)
- Chevrolet Malibu (2007-2012)
- Chevrolet Silverado 1500 (2007-2009 w/4.3L)
- GMC Sierra 1500 (2007-2009 w/4.3L)
- Pontiac G6 (2008-2010)
- Saturn Aura (2008-2009)
- Saturn Vue (2008-2010)
- Pontiac Solstice (2008-2010)
- Saturn Sky (2008-2010)
- Buick Lucerne (2009-2011 w/3.9L)
- Chevrolet Impala (2010-2011)
- Chevy Express / GMC Savana 1500 Van (2008-2009 w/4.3L)
Frequently Asked Questions
- Q: How do I know if my PCM is failing?
- A: Common signs include a persistent check engine light, engine stalling or misfiring, poor acceleration, erratic automatic transmission shifting, and a complete no-start situation where the engine cranks but won’t fire.
- Q: Is this part difficult to install?
- A: Not at all for a confident DIYer. The physical swap is just a few bolts and electrical connectors. Since we program it beforehand, you avoid the most complex part of the job.
- Q: What do you need my VIN for?
- A: Your Vehicle Identification Number (VIN) allows us to load the exact factory software for your car’s specific engine, transmission, and options. This ensures it works perfectly right out of the box.
- Q: Will this fix my specific check engine light code?
- A: This module is the solution for PCM-related fault codes, such as communication errors (U-codes) or internal processor faults (P06xx series). Always ensure you have properly diagnosed the issue before ordering.
- Q: What is the security relearn procedure?
- A: It’s a simple process that syncs the new PCM with your vehicle’s anti-theft system. Typically, it just requires leaving the ignition in the ‘ON’ position for about 10-15 minutes until the security light on the dash turns off.