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.
$100.00
Used engine control module (ECM) for 2007 GM Trucks Silverado 3500 with 6.0L engine. This electronic brain box controls engine functions and has been inspected and is ready to ship. Interchange #399, Stock #EBX9836.
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This engine control module (ECM) was removed from a 2007 GM Trucks Silverado 3500 with a 6.0L engine. The ECM features the new style smooth door skin design and mounts in the left front position under the battery. This electronic control unit has been professionally inspected and is currently on our shelf ready for immediate shipment.
The engine control module is the computer brain that manages your truck’s engine performance, fuel injection, ignition timing, and emissions systems. When an ECM fails, you may experience poor fuel economy, rough idling, stalling, or check engine lights. A faulty ECM can leave your vehicle inoperable, making replacement critical for proper engine function and performance.
At 603 Auto Salvage, we maintain over 50,000 quality used parts in stock from more than 1,100 vehicles. Our experienced team carefully inspects each component to ensure reliability. Contact us to verify compatibility with your specific vehicle or browse our extensive inventory online for additional GM truck parts and accessories. 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 # | 399 |
| OEM Part Number | 12597121 |
| Side | N/A |
| Part Grade | X — Grade X – Inspected electronic control module, new style with smooth door skin, ready to ship |
| Warranty | 90-Day Warranty (Standard warranty for tested electronic components) |
| Type | Used OEM |
| Year / Make / Model | 2007 GM TRUCKS SILV35 |
| VIN | N/A |
| Vehicle Stock # | EBX9836 |
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 integrity |
| ✅ Pin Condition | All connector pins verified straight and undamaged |
| ✅ Mounting Points | Bracket and mounting hardware inspected for proper fitment |
Based on interchange #399, this part fits the following vehicles. Always confirm fitment with your mechanic before purchasing.
| Year(s) | Make | Model | Notes |
|---|---|---|---|
| 2007 | GM Trucks | Silverado 3500 | 6.0L engine with new style ECM – 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
Yes, this engine control module will need to be programmed by a qualified technician or dealership to match your vehicle’s VIN and specific configuration. Programming ensures proper communication with your truck’s other systems.
Common signs include check engine lights, poor fuel economy, rough idling, stalling, or the vehicle not starting. A diagnostic scan can confirm ECM-related trouble codes and help determine if replacement is needed.
The new style ECM features a smooth door skin design and different mounting configuration. This unit is specifically for vehicles requiring the new style ECM and may not be compatible with older style applications.
This ECM is designed for 2007 GM trucks with 6.0L engines. Compatibility varies by specific model year, engine size, and ECM style. Contact us with your VIN for exact fitment verification.
Common causes include electrical surges, water damage, overheating, corrosion, and normal wear over time. Age and high mileage can also contribute to internal component failure requiring replacement.
Looking for this part by number? Here are the reference numbers:
| GM Part Number | 12597121 |
| Interchange Number | 399 |
| Stock Number | EBX9836 |
| Source | Price Range | Warranty | Notes |
|---|---|---|---|
| Dealer (New OEM) | $400-600 | 1 year | Brand new, longest wait time |
| Aftermarket | $250-400 | Varies | Non-OEM fitment, quality varies |
| Other Salvage Yards | $150-250 | 30–60 days | Varies in quality and testing |
| 603 Auto Salvage | $100 | 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 |
|---|
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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
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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.
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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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