General Motors GM Genuine Parts 12633238 Engine Control Module

If you’re replacing an Engine Control Module, going with a genuine GM part is the safest route and this one worked exactly as it should. The module arrived properly packaged and in good condition. Fitment was correct for the specified vehicle, and once programmed, it functioned without issues. No warning lights, no communication errors, and the vehicle ran smoothly. With critical components like an ECM, reliability matters more than saving a few dollars on aftermarket options. OEM parts eliminate compatibility concerns and reduce the risk of drivability problems. Keep in mind that most vehicles will require proper programming or flashing after installation, so this is not necessarily a plug-and-play part for everyone. Make sure you have access to the right tools or professional programming if needed. Overall, this is a genuine, reliable replacement that performs exactly as intended. If your vehicle calls for this part number, it’s a solid choice. 5 stars.

Highly recommend, cheapest price, fast delivery, product as described and fit for purpose 🤗

Amazon had the best price I could find on a genuine AC DELCO ECM. Shipping was fast, only took two days. I brought my truck and this part to my local GM dealer and they programmed it no problem.

Part works great and at it fair price

Product is the same you would get at an auto parts store but for way less. No issues at all.