Description
Part Description
This chassis brain box is a genuine OEM transmission control module removed from a 2005 Volvo V60. The electronic control unit has been professionally inspected for proper function and is currently on our shelf ready to ship. This module was carefully removed from the donor vehicle’s engine compartment and stored in our climate-controlled facility.
The chassis brain box serves as the transmission control module, managing shift points, torque converter lockup, and overall transmission performance in your Volvo. These modules commonly require replacement due to internal circuit failures, water damage, or electrical issues that cause erratic shifting, transmission fault codes, or complete transmission shutdown. A failing transmission control module can leave your vehicle inoperable or cause severe drivability issues.
603 Auto Salvage maintains over 50,000 used auto parts in stock from more than 1,100 vehicles, specializing in quality OEM components for European and domestic vehicles. Our experienced team can help verify compatibility and arrange fast shipping to get your Volvo back on the road. Contact us to confirm fitment for your specific vehicle or browse our extensive online inventory. 50,000+ parts in stock from over 1,100 vehicles. Contact us or call (603) 392-7313 for anything you need.
Part Specifications
| Part | Chassis Brain Box – Transmission Control Module |
| Interchange # | 66120 |
| OEM Part Number | Contact for OEM# |
| Side | N/A |
| Part Grade | X — Grade X – Inspected electronic control module, ready to ship |
| Warranty | 30-Day Warranty (Standard warranty for electronic control modules) |
| Type | Used OEM |
Vehicle Information (Donor)
| Year / Make / Model | 2005 VOLVO VOLV60 |
| VIN | N/A |
| Vehicle Stock # | PCM3432 |
Our Testing & Inspection Process
Every part at 603 Auto Salvage is inspected before listing. Here is what was verified on this Chassis Brain Box – Transmission Control Module:
| ✅ Connector Pins | All pins straight and corrosion-free |
| ✅ Housing Integrity | No cracks or damage to module casing |
| ✅ Circuit Board | Visually inspected for burn marks or damage |
| ✅ Mounting Tabs | Secure and undamaged for proper installation |
Compatibility — What Vehicles Does This Part Fit?
Based on interchange #66120, this part fits the following vehicles. Always confirm fitment with your mechanic before purchasing.
| Year(s) | Make | Model | Notes |
|---|---|---|---|
| 2005 | Volvo | V60 | 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
Warranty & Shipping
Frequently Asked Questions
Does this transmission control module need programming?
Most Volvo transmission control modules require dealer or specialist programming to match your vehicle’s VIN and transmission specifications. We recommend having this done by a qualified Volvo technician.
What are signs of a failing chassis brain box in a Volvo?
Common symptoms include harsh shifting, transmission stuck in one gear, check engine light, transmission fault codes, or complete loss of transmission function. The module controls all electronic transmission operations.
Is this the same as a TCM or transmission computer?
Yes, Volvo refers to their transmission control module as a chassis brain box, but it performs the same function as a TCM or transmission computer in managing shift patterns and transmission operation.
Can I install this transmission control module myself?
While the physical installation involves unplugging the old module and installing the replacement, programming is typically required and must be done with dealer-level diagnostic equipment. Professional installation is recommended.
Will this fit other Volvo models besides the V60?
This module may be compatible with other 2005 Volvo models sharing the same transmission type. Contact us with your VIN for compatibility verification before ordering.
Related Parts & Resources
OEM Part Numbers & Cross-Reference
Looking for this part by number? Here are the reference numbers:
| Interchange Number | 66120 |
| Stock Number | PCM3432 |
| Location | Right front corner engine compartment |
Price Comparison — Why Used OEM Makes Sense
| 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 | 30-Day Warranty | Tested, Grade X, ships in 24hrs |
Installation Notes
- Disconnect battery before removing or installing the transmission control module
- Take photos of connector positions before disconnection to ensure proper reconnection
- Handle the module carefully to avoid static electricity damage to internal circuits
- Have the module programmed immediately after installation for proper operation
🔍 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
Estimated Shipping Costs by Region
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.
Why Buy From 603 Auto Salvage?
- 50,000+ parts in stock from over 1,100 vehicles on-site in Plaistow, NH
- Every part inspected before listing — no guesswork
- Family-owned salvage yard — real people, not a call center
- 30-Day Warranty on this part
- Fast shipping — most orders ship within 24 hours
- Competitive pricing — save 50–70% vs dealer prices
- Serving New Hampshire, Massachusetts & all 50 states
Ready to order? Call (603) 392-7313 or add to cart above. We are here to help.




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