(May fit other vehicles) Compatible: 1996-2005 Pontiac Sunfire
OEM Part Number: 12579657
Looking for a VIN matched replacement 12579657 ECU?
Want to avoid costly dealer programming fees and locksmiths?
We can help!
This rebuilt, key ready ECU will include our VIN programming service and the latest OEM software updates.
Simply include your VIN needed in the note box during checkout.
Please allow 5-7 business days for delivery.
Being that these ECUs are discontinued, supplies may be limited.
Our rebuilt, pre-owned units include a hassle free 2-year warranty.
Make sure you are ordering the right part number, if you do not see your part number reach out to us – we may have a compatible ECU.
In these vehicles your VIN must be programmed to be synced with other components in the vehicle.
We also ensure each unit has the latest OEM, VIN matched software from GM. This may be beneficial if your original unit software is out of date causing rough shifting, idle issues, or stalling.
The mileage and engine hours will not be affected after installing the replacement unit.
After Installation Notes:
The keys may need to be programmed or the vehicle will not start. This key programming procedure can be done in the vehicle without tools using programming instructions we will provide with the unit.
In addition to key programming a crank shaft position sensor relearn may also be required. After a replacement ECU is installed in these vehicles its common for a service engine light (code P1336) to be present. The vehicle will operate as normal without issues but to clear the code, a repair shop that has the capability of doing a “crankshaft position relearn procedure” may be required.
Other acronyms for the engine computer: ECU Engine Control Unit – ECM Engine Control Module – BCM Body Control Module – PCM Power Control Module
OEM meaning: Original Equipment Manufacturer – our units are factory original units.
We understand for some, a vehicle is part of the family. Our mission is to get your vehicle back on the road by offering quick and cost-effective solutions.
If you have any questions about this unit or anything else, please do not hesitate to reach out to us!