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Item #:
126830258
2003 Avalanche Engine Computer 12576106 Programmed to Your VIN ECM PCM ECU
Item #:
126830258
KWD 65
Price Details
Excluding Shipping & Custom charges ( Shipping and custom charges will be calculated on checkout )
*All items will import from US
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Imported from USA store
QTY:
Order now and get it around Friday, August 21
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This E.C.M. is programmed to your V.I.N. to exactly match your vehicle.
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Note: Step Down Voltage Transformer required for using electronics products of US store (110-120). Recommended power converters Buy Now.
What Stands Out
Customized Programming
Each ECM is programmed specifically to your VIN, ensuring perfect compatibility and optimized performance for your vehicle.
Direct Replacement
This ECM serves as a direct replacement for your original unit, making installation simple and hassle-free without additional modifications.
Enhanced Performance
Improves engine efficiency and responsiveness, addressing common performance issues effectively, unlike generic alternatives.
Product Details
| Department | Unisex Adult |
| Manufacturer | Flashmasters |
| Color | Multicolor |
| Brand | Flashmasters |
| Material | Plastic |
| Operating Temperature | 125 Degrees Celsius |
| Item Weight | 2 lbs (910 grams) |
Who Should Buy?
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Replacement Needs
Ideal for users needing an ECM replacement after malfunction or failure in their 2003 Avalanche vehicle.
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VIN Programming
Perfect for those requiring a customized ECM programmed specifically to their vehicle’s VIN for optimal performance.
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DIY Mechanics
Great for DIY enthusiasts who are comfortable installing car parts and need an easy-to-install engine computer.
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Budget-Conscious
Not suitable for users looking for a low-cost alternative, as it's a specialized and potentially expensive component.
Product Description
2003 Avalanche Engine Computer 12576106 Programmed to Your VIN ECM PCM ECU
Have any Query? Chat with us
Customer Questions & Answers
-
Question:
What vehicles does this E.C.M. fit?
Answer: It fits the 2003 5.3/8.1L Chevrolet Avalanche (1500,2500). -
Question:
What is required after purchasing the E.C.M.?
Answer: You will need to provide your V.I.N. for programming. -
Question:
Are installation instructions included?
Answer: Yes, installation instructions are provided for both the E.C.M. setup and any needed relearn procedures.
Flashmasters Engine Computers Editorial Review
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Pros
- Custom programmed for your VIN
- Improves engine performance
- Easy installation process
- Reliable and durable unit
- Excellent customer support
Cons
- Some users report minor wiring issues.
Platform Trust & Buyer Confidence
A
Ahmad
Verified buyer
“Fast delivery, great experience overall.”
03-Jul-26 · via Trustpilot
AM
abbas
Verified buyer
“Excellent item received as expected and before the estimated time. Thanks for the great service.”
19-Jul-26 · via Trustpilot
WA
Waleed
Verified buyer
“Thank you for your message. I received the product and it is very good ? I?m really impressed with how great it works! I will be happy to share my feedback on the website.”
11 February 2026 · via Trustpilot
AA
Ahmed
Verified buyer
“Very good the same exact product that i wanted good shipping and delivery”
10 June 2026 · via Trustpilot
AN
Ambhita
Verified buyer
“Package delivered on time”
10 July 2026 · via Trustpilot
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- Limitations : For products shipped internationally, please note that any manufacturer warranty may not be valid; manufacturer service options may not be available; product manuals, instructions, and safety warnings may not be in destination country languages; the products (and accompanying materials) may not be designed in accordance with destination country standards, specifications, and labeling requirements; and the products may not conform to destination country voltage and other electrical standards (requiring use of an adapter or converter if appropriate). The recipient is responsible for assuring that the product can be lawfully imported to the destination country. When ordering from Ubuy or its affiliates, the recipient is the importer of record and must comply with all laws and regulations of the destination country.
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KWD 65
Order now and get it around Friday, August 21
This item is not restrict in my country.(Please click on above link if this item is not restrict in your country, So our team will review and allow.)
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Fastest cross-border delivery
Features & Benefits
- Compatible with 2003 5.3/8.1L Chevrolet Avalanche (1500,2500).
- Each E.C.M. is personalized and programmed to your specific V.I.N.
- Includes instructions for anti-theft relearn and crankshaft variation relearn.
- Plug and Play installation for easy set up.
- Resolve check engine light issues with provided troubleshooting guidance.
- Get a reliable and normal vehicle performance with our E.C.M.
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