- 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
NZD 361
Price Details
Excluding Shipping & Custom charges ( Shipping and custom charges will be calculated on checkout )
*All items will import from US
Afterpay Information
Split your bill into 4 payments of NZD 90.25 interest-free
Add the item to your cart
Select Afterpay at checkout
Fill in your details
Complete your first payment
and pay the remaining in easy instalments or according to the payment plan you selected
Here’s why you should Afterpay it
Get everything you need now..
Shop thousands of brands and millions of products, online and in-store.
Pay over six weeks.
Make the first payment upfront and the rest over time. Always interest-free when you pay it in 4.
No fees when you pay on time.
We’ll send you reminders and cap late payments to help you get back on track.
(1) Terms and conditions. apply. (2) Installment Agreement. (3) Eligible for customers in. New Zealand, (4) Your final payment plan may vary depending on your credit history.
0 ratings
Write a review
In stock
Imported from USA store
QTY:
Order now and get it around Sunday, August 16
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
Platform Trust & Buyer Confidence
RA
Ranee
Verified buyer
“Paint ordered from USA, u buy got the product to me in New Zealand in approx a week”
22 July 2026 · via Trustpilot
NC
NordVPN
Verified buyer
“very speedy delivery,tracking info was superb-best experikence ever!!!”
24 June 2026 · via Trustpilot
NH
Nicholas
Verified buyer
“Love what I received and ordered found that usa clothes are more better quality and look better than the same clothes in my country but are harder to find here recommend ubuy 100%”
22 June 2026 · via Trustpilot
D
Dneah
Verified buyer
“Product came earlier than expected (shipped from US to NZ), in about 3 weeks. No damages and product was exactly as advertised!”
15-Jul-26 · via Trustpilot
TS
Tania
Verified buyer
“Easy to order, easy to track and the product is great to use. Also, the person-to-person (not automated) phone call I got to confirm that I'd received the item was wonderful ??”
11-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.
NZD 361
Order now and get it around Sunday, August 16
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.