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.
$150.00
Used chassis brain box (transmission control module) for 2004 Jeep Grand Cherokee with 4.7L engine and 45RFE transmission. This electronic control unit manages transmission functions and has been inspected for proper operation. Stock number GNDCHE3507, interchange 3507.
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This chassis brain box is a transmission control module removed from a 2004 Jeep Grand Cherokee equipped with a 4.7L engine and 45RFE automatic transmission. The unit carries ID number 56044574AC and has been professionally inspected to ensure proper functionality. This OEM electronic control module is currently on our shelf and ready for immediate shipment.
The chassis brain box serves as the transmission control module, managing shift points, torque converter lockup, and overall transmission operation in your Jeep Grand Cherokee. These modules commonly require replacement due to internal circuit failures, water damage, or electrical issues that cause erratic shifting, transmission codes, or complete transmission failure. A faulty transmission control module can prevent proper gear engagement and cause the vehicle to enter limp mode.
At 603 Auto Salvage, we maintain over 50,000 used auto parts in stock from more than 1,100 vehicles in our Plaistow, NH facility. Our experienced team carefully inspects each electronic component before placing it on our shelf. Contact us to verify compatibility with your specific vehicle or browse our extensive inventory online for additional Jeep transmission components. 50,000+ parts in stock from over 1,100 vehicles. Contact us or call (603) 392-7313 for anything you need.
| Part | Chassis Brain Box – Transmission Control Module |
| Interchange # | 3507 |
| OEM Part Number | 56044574AC |
| Side | N/A |
| Part Grade | X — Grade X – Inspected electronic control module, ready to ship |
| Warranty | 90-Day Warranty (Standard warranty for tested electronic control modules) |
| Type | Used OEM |
| Year / Make / Model | 2004 JEEP GNDCHE |
| VIN | N/A |
| Vehicle Stock # | GNDCHE3507 |
Every part at 603 Auto Salvage is inspected before listing. Here is what was verified on this Chassis Brain Box – Transmission Control Module:
| ✅ Circuit Board Inspection | No visible damage to internal circuits or components |
| ✅ Connector Pins | All connector pins clean and free of corrosion |
| ✅ Housing Integrity | Case shows no cracks or water damage |
| ✅ Part Number Verification | Confirmed ID 56044574AC matches application |
| ✅ Electrical Testing | Module powers up and responds to diagnostic commands |
Based on interchange #3507, this part fits the following vehicles. Always confirm fitment with your mechanic before purchasing.
| Year(s) | Make | Model | Notes |
|---|---|---|---|
| 2004 | Jeep | Grand Cherokee | 4.7L engine with 45RFE transmission – Contact us for full compatibility list |
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
The chassis brain box is the transmission control module that manages automatic transmission operation, including shift timing, torque converter lockup, and diagnostic functions. It communicates with the engine control module to optimize transmission performance.
Common symptoms include erratic shifting, transmission slipping, check engine light, transmission stuck in one gear, or the vehicle entering limp mode. A diagnostic scan will typically show transmission-related trouble codes.
Most Jeep transmission control modules require programming or adaptation procedures when installed. Contact your local dealer or qualified technician to ensure proper programming for your specific vehicle.
This module is specific to 2004 Grand Cherokee with 4.7L engine and 45RFE transmission. Contact us with your VIN to verify compatibility, as transmission control modules are very application-specific.
Common failure causes include heat exposure, electrical surges, water damage, internal circuit degradation, and normal wear over time. Failed solenoids or other transmission issues can also damage the control module.
Looking for this part by number? Here are the reference numbers:
| OEM Part Number | 56044574AC |
| Interchange Number | 3507 |
| Application | 4.7L 45RFE Transmission |
| 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 | $175-250 | 30–60 days | Varies in quality and testing |
| 603 Auto Salvage | $150 | 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 | 2 lbs |
|---|
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