- Home Page /
- Automotive /
- Automotive Replacement Parts /
- Ignition Parts /
- Engine Computers /
- 2003 Avalanche Engine Computer 12576106 Progr...
0 ratings
Item #:
126830258
2003 Avalanche Engine Computer 12576106 Programmed to Your VIN ECM PCM ECU
Item #:
126830258
AED 741
Price Details
Excluding Shipping & Custom charges ( Shipping and custom charges will be calculated on checkout )
*All items will import from US
0 ratings
Write a review
In stock
Imported from USA store
QTY:
Order now and get it around Tuesday, August 25
Secured transaction
Ubuy works hard to protect your security and privacy. Our advanced payment security system ensures confidentiality by encrypting your information during transmission using AES (Advanced Encryption Standards) and SSL (Secure Socket Layer) protocols. Your payment details are 100% secure as we do not share your payment details with third party sellers.
Our Top Logistics Partners
This E.C.M. is programmed to your V.I.N. to exactly match your vehicle.
Buy Now Pay Later
Fast
Shipping
Free
Return*
Secure Packaging
100% Original Products
PCI DSS Compliance
ISO 27001 Certified
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?
-
Replacement Needs
Ideal for users needing an ECM replacement after malfunction or failure in their 2003 Avalanche vehicle.
-
VIN Programming
Perfect for those requiring a customized ECM programmed specifically to their vehicle’s VIN for optimal performance.
-
DIY Mechanics
Great for DIY enthusiasts who are comfortable installing car parts and need an easy-to-install engine computer.
-
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
No editorial reviews found
Customer Reviews & Ratings
1 customers ratings
-
5 Star
100%
-
4 Star
0%
-
3 Star
0%
-
2 Star
0%
-
1 Star
0%
Review this product
Share your thoughts with other customers
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
HB
Haitham
Verified buyer
“Excellent experience”
11 June 2026 · via Trustpilot
RF
Rasanga
Verified buyer
“I had an excellent experience with Ubuy UAE. I ordered a product from the USA, and the website clearly mentioned that deliveries might be delayed due to the current situation in the Middle East. Ubuy provided great value, transparent communication, and reliable delivery. Thank you, Ubuy UAE, for a fantastic shopping experience!”
17 June 2026 · via Trustpilot
SC
Simon
Verified buyer
“On time delivery and great product at a really great price!”
8 April 2026 · via Trustpilot
V
Vladislav
Verified buyer
“Fast delivery. Quality as expected.”
03-Jul-26 · via Trustpilot
HD
Hope
Verified buyer
“Excellent experience! The service was top-notch, reliable, and very fast. I am completely satisfied with their professionalism and highly recommend Ubuy UAE to everyone.”
02-Jul-26 · via Trustpilot
Secure Checkout
Global Delivery
Easy Returns
Genuine Products
Product Price History
Important information
- 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.
- Not all the products listed on Ubuy are for sale, as Ubuy is a global search engine. Products are subject to export/trade regulations.
AED 741
Order now and get it around Tuesday, August 25
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.)
QTY:
Secured transaction
PCI DSS compliant and ISO 27001:2022 certified, with encrypted payments and full buyer protection on every order.
Our Top Logistics Partners
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.
Ubuy Assurance
Experience worry-free shopping with 100% original products, PCI DSS-compliant payment security, ISO 27001-certified data protection, the fastest cross-border delivery, free returns *, and secure packaging on every order.