Is Your Pontiac Pursuit Running Rough? Let’s Get It Fixed.
As a technician with over two decades of experience under the hood, I’ve seen countless vehicles come into the shop with frustrating, hard-to-diagnose issues. A flickering check engine light, sputtering at idle, poor fuel economy, or even a complete no-start condition can often be traced back to one critical component: the Powertrain Control Module (PCM). If your 2005 Pontiac Pursuit is exhibiting these symptoms, you’ve found the reliable, straightforward solution.
This isn’t just a replacement part; it’s a restoration of your vehicle’s core operational logic. We take a genuine OEM module and flash it with the latest, most stable software updates directly from GM, ensuring it’s perfectly matched to your vehicle’s specific Vehicle Identification Number (VIN). This process eliminates the guesswork and the need for an expensive trip to the dealership for programming.
Why Choose Our 2005 Pursuit PCM?
Getting your car back to factory-spec performance is our top priority. We handle the complex programming so you can focus on the simple installation.
- โ VIN-Matched Programming: We flash the module with your car’s exact VIN, ensuring perfect communication with all other onboard systems.
- โ Latest GM Software: Your PCM will arrive with the newest software updates, which often correct factory bugs and improve performance and efficiency.
- โ Plug-and-Play Solution: No additional programming or dealer visits are required. Once installed, your vehicle is ready for the standard security relearn procedure.
- โ Solves Common Issues: Effectively resolves problems like false diagnostic trouble codes (DTCs), erratic transmission shifting, and poor engine performance.
Expert Pro Tip: Check for Oil Contamination
Before installing your new PCM, take a moment to inspect the main wiring harness connectors for any signs of engine oil. On these Ecotec engines, a failing camshaft position actuator solenoid can leak oil internally, which then travels through the wiring harness and contaminates the PCM connectors. This can damage the new module. If you see oil, you must replace the leaking solenoid and thoroughly clean the harness connectors with a quality electronics cleaner before installation.
Simple Installation Guide
- Safety First: Disconnect the negative terminal from your vehicle’s battery and wait 10-15 minutes for the system to fully discharge.
- Locate the PCM: On the 2005 Pursuit, the PCM is located in the left-hand (driver’s side) front of the engine compartment.
- Disconnect Connectors: Carefully release the locking tabs and unplug the wiring harness connectors from the old module.
- Remove Old Module: Unbolt the old PCM from its mounting bracket.
- Install New Module: Mount your new, pre-programmed PCM and securely reconnect the wiring harnesses. Ensure they click into place.
- Reconnect Battery: Reattach the negative battery terminal.
- Perform Security Relearn: You will need to perform a simple key-cycle security relearn procedure. This typically involves turning the key to the ‘ON’ position for 10-15 minutes, then ‘OFF’, and repeating two more times. This allows the vehicle’s anti-theft system to recognize the new module.
Compatibility Information
This module is a direct replacement for part numbers 12579132, 12589320, and 12615197. It is guaranteed to fit and function in the following vehicles:
- 2005 Pontiac Pursuit: Electronic Control Module; (LH front engine compartment), ID 12589320
- 2005 Chevrolet Cobalt: Electronic Control Module; (LH front engine compartment), ID 12589320
- 2004-2005 Saturn Ion: Electronic Control Module; 2.0L (Red Line package, opt LSJ)
- 2004-2005 Chevrolet Malibu: Electronic Control Module; (LH dash), VIN Z (4th digit, New Style), 2.2L
After your purchase, please provide us with your VIN to ensure we program the module perfectly for your vehicle before shipment. Restore your car’s reliability and drivability today.