Welcome to 603 Auto Salvage, We Sell Quality Used Auto Parts at Affordable prices.
Welcome to 603 Auto Salvage, We Sell Quality Used Auto Parts at Affordable prices.
$75.00
Used engine control module (ECM) for 2003 GM Trucks Silverado 1500 with 4.3L engine. This electronic brain box has been inspected and is ready to ship. Interchange #6724, Stock #PCM6289.
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This engine control module was removed from a 2003 GM Trucks Silverado 1500 and has been professionally inspected for functionality. The ECM is currently on our shelf and ready to ship immediately. This electronic brain box controls critical engine functions and has been tested to ensure proper operation.
The engine control module is the computer that manages fuel injection, ignition timing, emissions controls, and other vital engine functions. Common reasons for ECM replacement include water damage, electrical surges, internal component failure, or accident damage. When your ECM fails, symptoms typically include no-start conditions, poor fuel economy, rough idling, or check engine lights.
603 Auto Salvage maintains over 50,000 used auto parts in stock from more than 1,100 vehicles. Our experienced team can help you find the exact ECM you need for your GM truck. Call us to verify compatibility with your specific vehicle or browse our extensive online inventory for additional parts. 50,000+ parts in stock from over 1,100 vehicles. Contact us or call (603) 392-7313 for anything you need.
| Part | Engine Control Module (ECM) – Electronic Brain Box |
| Interchange # | 6724 |
| OEM Part Number | 12576106 |
| Side | N/A |
| Part Grade | X — Grade X – Inspected and ready to ship, located under battery on left front |
| Warranty | 90-Day Warranty (Standard electronic component warranty coverage) |
| Type | Used OEM |
| Year / Make / Model | 2003 GM TRUCKS SILV15 |
| VIN | N/A |
| Vehicle Stock # | PCM6289 |
Every part at 603 Auto Salvage is inspected before listing. Here is what was verified on this Engine Control Module (ECM) – Electronic Brain Box:
| ✅ Connector Integrity | All electrical connectors inspected for damage and corrosion |
| ✅ Housing Condition | ECM case checked for cracks, water damage, and physical damage |
| ✅ Pin Condition | All connector pins verified straight and undamaged |
| ✅ Internal Function | Electronic components tested for proper operation |
Based on interchange #6724, this part fits the following vehicles. Always confirm fitment with your mechanic before purchasing.
| Year(s) | Make | Model | Notes |
|---|---|---|---|
| 2003 | GM Trucks | Silverado 1500 | 4.3L engine – Contact us for full compatibility verification |
Questions? Need a shipping quote? Call us now:
603 Auto Salvage | 233 Main St, Plaistow, NH 03865
Mon–Fri 8am–4:30pm | Sat 8am–2pm | Sun Closed
This ECM is specifically for 2003 GM Trucks Silverado 1500 with 4.3L engine. Programming may be required for your specific vehicle. Contact us with your VIN for compatibility verification.
Most ECMs require programming to match your vehicle’s VIN and options. We recommend having this done by a qualified technician or dealership after installation.
Common ECM failure causes include water damage, electrical surges from jump starting, internal component wear, and accident damage. Symptoms include no-start conditions and check engine lights.
Yes, this is the original OEM GM part number 12576106 ECM removed from a 2003 Silverado 1500. It maintains all original specifications and functionality.
In the 2003 Silverado 1500, the ECM is located in the left front of the engine compartment under the battery. Access requires battery removal for installation.
Looking for this part by number? Here are the reference numbers:
| GM Part Number | 12576106 |
| Interchange Number | 6724 |
| Stock Number | PCM6289 |
| Source | Price Range | Warranty | Notes |
|---|---|---|---|
| Dealer (New OEM) | $350-450 | 1 year | Brand new, longest wait time |
| Aftermarket | $200-300 | Varies | Non-OEM fitment, quality varies |
| Other Salvage Yards | $100-150 | 30–60 days | Varies in quality and testing |
| 603 Auto Salvage | $75 | 90-Day Warranty | Tested, Grade X, ships in 24hrs |
🔍 Free Fitment Check
Call us with your VIN and we will verify compatibility for free. No obligation, no pressure — just answers.
Our parts specialists check interchange data in real-time
This part ships via FedEx Ground. Prices are estimates — call for an exact quote to your zip code.
| Region | Estimated Cost | Transit Time |
|---|---|---|
| New England (NH, MA, ME, VT, CT, RI) | $15 – $30 | 1–3 business days |
| Northeast (NY, NJ, PA, MD, VA) | $20 – $40 | 2–4 business days |
| Southeast (FL, GA, NC, SC, TN) | $25 – $45 | 3–5 business days |
| Midwest (OH, MI, IL, IN, WI, MN) | $30 – $50 | 3–5 business days |
| Southwest (TX, AZ, NM, OK) | $35 – $55 | 4–6 business days |
| West Coast (CA, OR, WA) | $40 – $65 | 5–7 business days |
Local pickup is always free. Free delivery within 30 miles of Plaistow, NH.
Ready to order? Call (603) 392-7313 or add to cart above. We are here to help.
| Weight | 3 lbs |
|---|
RatingThank you so much to everyone who works here . i had the best first time experiance i called super early they answeered they told me they had what i needed i got to go outback with my tools and take what was needed the price was so fair! and everyone was so polite. thank you 603 auto Salavage you made a customer for life <3 will be back someday again soon
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Awesome experience Ray was the driver picked up my junk vehicle quickly efficiently and they even called to pick it up before schedule day because they had an opening. They kept their word super happy. I will definitely be using them again in the future.
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good lead times and customer service, look forward to more business here
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Drove from new york, Julie was a sweetheart asked questions to make sure that my ECU was the proper part number and was compatible with my manual Accord, price was phenomenal I highly recommend them for any parts your car may need. Definitely the best salvage yard around
Great experience at 603 Auto Salvage! ⭐️ The owner and employee were both extremely helpful and easy to work with. I was able to find everything I needed in one stop — about seven different items — which saved me a lot of time and hassle. Good selection, fair pricing, and friendly service. Definitely recommend checking them out if you're looking for parts. I’ll be back again! 👍🔧🚗
I had a great experience with 603 Auto Salvage Inc. The team was very helpful and quickly found the exact part I needed. They kept me informed and made the pickup process easy. The price was very fair, and the service was excellent. I would definitely recommend them and will use them again if I need parts in the future.
Excellent support, she helped me with my order service was fast and exactly what I needed.Very Professional.
The customer service at 603 was great. They found the part I needed very quickly and promptly notified me when it was ready to be picked up. There wasn’t any other place in the area that had what I needed. The price was very good also. I will be using them again for sure.
I had a great experience. They didn’t just look up the part I needed they took the time to explain how to install it and made sure I understood everything. I even received a call back, which I really appreciated. Everyone I spoke with was friendly and patient, and I never felt brushed off. I truly felt taken care of. Highly recommend if you want knowledgeable people who actually care about helping you. Kristy Thanks Guys!
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Great service! Picked up a door for my car and it was in good condition.
Purchased a wheel they had it ready the next day , not damaged, and ready for pickup. Julie was helpful at the front desk giving a specific time frame and held to it.
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Great place, have a wide selection of cars. They definitely will have what you need if not they will help a ton!
Great customer service and great prices!!! I purchased an engine that was in excellent condition and could not beat the price. The woman at the desk, Julie, was very helpful and knowledgeable. They put the engine on the back of the truck for me And secured it as well. I highly recommend this place. I will be coming here for any parts I need.
Eldy was awesome he helped load my car door and was informative. The lady Julie at the counter was super helpful and got back to me fast regarding the replacement door I needed. Highly recommended
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