Description
Part Description
This automatic transmission control module, also known as a chassis brain box, was removed from a 2008 Nissan Altima donor vehicle. The electronic control unit has been inspected by our technicians and is currently on our shelf ready to ship. This OEM Nissan part carries part number 31036-JA03B and is designed to manage your vehicle’s automatic transmission functions.
The transmission control module is a critical component that controls shift points, torque converter lockup, and overall transmission performance. When this module fails, you may experience erratic shifting, transmission slipping, or the vehicle going into limp mode. Common symptoms include harsh shifts, delayed engagement, or transmission warning lights on your dashboard.
603 Auto Salvage maintains over 50,000 used auto parts in stock from more than 1,100 vehicles in our Plaistow, NH facility. Our experienced team can help you find the right transmission control module for your Nissan. 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 Specifications
| Part | Automatic Transmission Control Module (Chassis Brain Box) |
| Interchange # | 68224 |
| OEM Part Number | 31036-JA03B |
| Side | N/A |
| Part Grade | X — Grade X – Inspected electronic control module, ready to ship |
| Warranty | 90-Day Warranty (Standard warranty for electronic control modules) |
| Type | Used OEM |
Vehicle Information (Donor)
| Year / Make / Model | 2008 NISSAN ALTIMA |
| VIN | N/A |
| Vehicle Stock # | TCM8601 |
Our Testing & Inspection Process
Every part at 603 Auto Salvage is inspected before listing. Here is what was verified on this Automatic Transmission Control Module (Chassis Brain Box):
| ✅ Connector Pins | All pins straight and corrosion-free |
| ✅ Housing Integrity | No cracks or damage to module casing |
| ✅ Circuit Board | Internal components visually inspected |
| ✅ Mounting Points | All mounting tabs and brackets intact |
Compatibility — What Vehicles Does This Part Fit?
Based on interchange #68224, this part fits the following vehicles. Always confirm fitment with your mechanic before purchasing.
| Year(s) | Make | Model | Notes |
|---|---|---|---|
| 2008 | Nissan | Altima | Contact us for full compatibility list and programming requirements |
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?
Yes, most transmission control modules require programming to your vehicle’s VIN and specifications. We recommend having this done by a qualified technician or dealership.
What are signs of a failing transmission control module?
Common symptoms include erratic shifting, transmission slipping, harsh shifts, delayed engagement, or transmission warning lights. The vehicle may also enter limp mode with reduced power.
Is this compatible with all 2008 Nissan Altima models?
This module fits 2008 Nissan Altima with automatic transmission. Contact us with your VIN to verify exact compatibility as there may be variations based on engine size or transmission type.
Can I install this transmission control module myself?
While the physical installation is straightforward, programming is required and typically needs dealer-level diagnostic equipment. Professional installation is recommended.
What is interchange number 68224 used for?
The interchange number 68224 helps identify compatible transmission control modules across different part suppliers and salvage yards nationwide.
Related Parts & Resources
OEM Part Numbers & Cross-Reference
Looking for this part by number? Here are the reference numbers:
| Nissan Part Number | 31036-JA03B |
| Additional Reference | ETC51-530N A1 |
| Interchange | 68224 |
Price Comparison — Why Used OEM Makes Sense
| Source | Price Range | Warranty | Notes |
|---|---|---|---|
| Dealer (New OEM) | $350-500 | 1 year | Brand new, longest wait time |
| Aftermarket | $200-300 | Varies | Non-OEM fitment, quality varies |
| Other Salvage Yards | $120-180 | 30–60 days | Varies in quality and testing |
| 603 Auto Salvage | $100 | 90-Day Warranty | Tested, Grade X, ships in 24hrs |
Installation Notes
- Disconnect battery before removing or installing the control module
- Handle the module carefully to avoid static electricity damage to internal circuits
- Ensure all electrical connections are clean and properly seated
- 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
- 90-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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