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 body control module (chassis brain box) from a 2005 GM Silverado 2500. This electronic control unit manages various body functions and electrical systems. Interchange #1129, Stock #BCM4638.
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This body control module, also known as a chassis brain box, was removed from a 2005 GM Silverado 2500 donor vehicle. The electronic control unit has been inspected by our technicians and is currently on the shelf ready to ship. This OEM GM part controls various body functions including lighting, door locks, windows, and other electrical systems throughout the vehicle.
Body control modules commonly fail due to electrical surges, water damage, or internal component degradation over time. When a BCM fails, you may experience issues with interior and exterior lighting, power windows, door locks, or other electrical accessories not functioning properly. Some vehicles may also experience starting issues or warning lights on the dashboard when the body control module malfunctions.
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 right body control module for your GM truck. Browse our online inventory or call us to verify compatibility and availability for your specific vehicle. 50,000+ parts in stock from over 1,100 vehicles. Contact us or call (603) 392-7313 for anything you need.
| Part | Body Control Module (Chassis Brain Box) |
| Interchange # | 1129 |
| OEM Part Number | Contact for OEM# |
| Side | N/A |
| Part Grade | X — Grade X – Electronic control module, inspected and ready to ship |
| Warranty | 30-Day Warranty (Electronic component with standard coverage) |
| Type | Used OEM |
| Year / Make / Model | 2005 GM TRUCKS SILV25 |
| VIN | N/A |
| Vehicle Stock # | BCM4638 |
Every part at 603 Auto Salvage is inspected before listing. Here is what was verified on this Body Control Module (Chassis Brain Box):
| ✅ Connector Pins | All pins straight and free of corrosion |
| ✅ Housing Integrity | No cracks or damage to module casing |
| ✅ Mounting Tabs | Secure and undamaged for proper installation |
| ✅ Circuit Board | No visible damage or burn marks on internal components |
Based on interchange #1129, this part fits the following vehicles. Always confirm fitment with your mechanic before purchasing.
| Year(s) | Make | Model | Notes |
|---|---|---|---|
| 2005 | GM TRUCKS | SILV25 | Contact us for full compatibility list – programming may be required |
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
Most GM body control modules require programming to match your vehicle’s VIN and options. Contact a qualified technician or GM dealer for programming services after installation.
Common symptoms include non-functioning lights, power windows not working, door locks not operating, warning lights on dashboard, or intermittent electrical issues throughout the vehicle.
Yes, chassis brain box and body control module (BCM) refer to the same electronic control unit that manages various body functions and electrical systems in GM vehicles.
This module is specific to certain GM truck applications. Contact us with your VIN to verify compatibility, as different trim levels and model years may require different part numbers.
While the physical installation involves unplugging the old module and plugging in the replacement, programming is typically required and should be done by a qualified technician with proper diagnostic equipment.
Looking for this part by number? Here are the reference numbers:
| Interchange Number | 1129 |
| GM Part Description | Body Control Module |
| Stock Number | BCM4638 |
| Source | Price Range | Warranty | Notes |
|---|---|---|---|
| Dealer (New OEM) | $250-400 | 1 year | Brand new, longest wait time |
| Aftermarket | $180-300 | Varies | Non-OEM fitment, quality varies |
| Other Salvage Yards | $120-180 | 30–60 days | Varies in quality and testing |
| 603 Auto Salvage | $100 | 30-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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