Description
Part Description
This OEM alternator was removed from a 2009 GM Trucks Colorado equipped with a 3.7L engine. The part has been thoroughly inspected by our experienced technicians and is currently on our shelf, ready for immediate shipment. All electrical connections and mounting points have been verified to ensure proper fitment and function.
Alternators are essential components that charge your vehicle’s battery and power the electrical system while the engine runs. Common signs of alternator failure include dimming headlights, dashboard warning lights, difficulty starting, or a dead battery. When your Colorado’s alternator fails, replacing it with a quality OEM part ensures reliable electrical system performance and proper charging capacity for your vehicle’s needs.
At 603 Auto Salvage, we maintain an inventory of over 50,000 quality used parts from more than 1,100 vehicles. Our experienced team carefully inspects each alternator to ensure it meets our standards before adding it to our inventory. Contact us to verify fitment for your specific vehicle or browse our extensive online catalog to find the parts you need. 50,000+ parts in stock from over 1,100 vehicles. Contact us or call (603) 392-7313 for anything you need.
Part Specifications
| Part | Alternator Assembly – 3.7L Engine |
| Interchange # | 170 |
| OEM Part Number | Contact for OEM# |
| Side | N/A |
| Part Grade | A — Grade A – Good working condition, 166K miles, inspected and ready to ship |
| Warranty | 90-Day Warranty (Standard warranty for electrical components with moderate mileage) |
| Type | Used OEM |
Vehicle Information (Donor)
| Year / Make / Model | 2009 GM TRUCKS COLORA |
| VIN | N/A |
| Vehicle Stock # | 0807257608 |
Our Testing & Inspection Process
Every part at 603 Auto Salvage is inspected before listing. Here is what was verified on this Alternator Assembly – 3.7L Engine:
| ✅ Electrical Output Test | Verified proper charging voltage and amperage output |
| ✅ Bearing Condition | Smooth rotation with no excessive play or noise |
| ✅ Brush and Slip Ring Wear | Acceptable wear levels for continued service |
| ✅ Case and Mounting Points | No cracks or damage, all mounting ears intact |
| ✅ Pulley Condition | Pulley properly secured with no wobble or damage |
| ✅ Electrical Connections | All terminals clean and undamaged |
Compatibility — What Vehicles Does This Part Fit?
Based on interchange #170, this part fits the following vehicles. Always confirm fitment with your mechanic before purchasing.
| Year(s) | Make | Model | Notes |
|---|---|---|---|
| 2009 | GM Trucks | Colorado | 3.7L engine – 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
Warranty & Shipping
Frequently Asked Questions
Will this alternator fit my 2009 Colorado with 3.7L engine?
Yes, this alternator is specifically from a 2009 GM Trucks Colorado with 3.7L engine. We recommend verifying your engine size and contacting us with your VIN to confirm exact fitment before purchase.
How do I know if my Colorado alternator is failing?
Common signs include dimming headlights, dashboard battery warning light, difficulty starting, strange noises from the engine bay, or electrical accessories not working properly. A multimeter test can confirm alternator output.
What tools do I need to replace a Colorado alternator?
Typical tools include socket wrenches, combination wrenches, and possibly a serpentine belt tool. You’ll need to disconnect the battery, remove the serpentine belt, and disconnect electrical connections before unbolting the alternator.
Is this a remanufactured or original alternator?
This is an original OEM alternator removed from a donor vehicle, not a remanufactured unit. It has been tested and inspected to ensure proper function before being offered for sale.
What warranty comes with this used alternator?
This alternator includes our 90-day warranty covering defects in materials and workmanship. The warranty ensures you receive a functional part that performs as expected.
Can you ship this alternator to my location?
Yes, we ship alternators nationwide via FedEx Ground. The alternator will be carefully packaged to prevent damage during transit and typically arrives within 3-5 business days.
Related Parts & Resources
OEM Part Numbers & Cross-Reference
Looking for this part by number? Here are the reference numbers:
| Interchange Number | 170 |
| Stock Number | 0807257608 |
| Engine Size | 3.7L |
| Part Number | 601 |
Price Comparison — Why Used OEM Makes Sense
| Source | Price Range | Warranty | Notes |
|---|---|---|---|
| Dealer (New OEM) | $180-250 | 1 year | Brand new, longest wait time |
| Aftermarket | $120-180 | Varies | Non-OEM fitment, quality varies |
| Other Salvage Yards | $85-120 | 30–60 days | Varies in quality and testing |
| 603 Auto Salvage | $75 | 90-Day Warranty | Tested, Grade A, ships in 24hrs |
Installation Notes
- Disconnect the negative battery cable before beginning work to prevent electrical shorts
- Take a photo of belt routing before removing the serpentine belt for easier reinstallation
- Clean battery terminals and alternator connections before installing the replacement unit
- Ensure all electrical connections are tight and properly seated to prevent charging issues
- Test the charging system after installation to verify proper alternator output
🔍 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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