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⚡ Drive with confidence—GM Genuine ECM, where precision meets power.
The GM Genuine Parts 12633238 Engine Control Module is a factory-spec replacement designed to manage your vehicle’s vital systems with precision. Featuring plug-in gold contacts and screw mount installation, this OE-certified module demands professional programming to unlock optimal performance. Trusted by professionals and ranked #2 in Automotive Control Units, it guarantees seamless integration and reliability for your GM vehicle.
| ASIN | B00496V0ZA |
| Best Sellers Rank | #97,034 in Automotive ( See Top 100 in Automotive ) #2 in Automotive Control Units |
| Brand | GM GENUINE PARTS |
| Brand Name | GM GENUINE PARTS |
| Connector Type | Plug-In |
| Connector type | Plug-In |
| Contact Material | Gold |
| Contact Type | Normally Open |
| Contact material | Gold |
| Contact type | Normally Open |
| Customer Reviews | 4.5 out of 5 stars 67 Reviews |
| Global Trade Identification Number | 00707773620137 |
| Included Components | Engine Control Module |
| Item Type Name | Engine Control Module |
| Item Weight | 1.74 Pounds |
| Manufacturer | ACDelco |
| Model | 12633238 |
| Mounting Type | Screw Mount |
| Mounting type | Screw Mount |
| Number of Items | 1 |
| Number of Packs | 1 |
| Number of Terminals | 1 |
| Operation Mode | Automatic |
| Operation mode | Automatic |
| Part Number | 12633238 |
| Specification Met | OE |
| UPC | 707773620137 |
| Unit Count | 1 Count |
| Wattage | 10 watts |
A**Y
Genuine OEM Fit and Works Exactly as Expected
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.
H**9
Best Price Around!
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.
P**E
The brain for my truck
Part works great and at it fair price
S**E
Great product
Product is the same you would get at an auto parts store but for way less. No issues at all.
R**O
Excelente AAA++++
Trabaja perfectamente para un Camaro ss 2010. Solo tienen que llevarla a un profesional para su programación.
Trustpilot
2 weeks ago
1 month ago