Description
Part Description
This OEM alternator was removed from a 2008 GM Trucks Colorado and has been professionally inspected for quality and functionality. The unit is currently on our shelf and ready for immediate shipment. This genuine GM alternator provides reliable charging performance for your Colorado’s electrical system.
Alternators are essential components that charge your vehicle’s battery and power the electrical system while the engine runs. Common alternator failure symptoms include dim headlights, dashboard warning lights, dead battery, or strange noises from the engine bay. When your Colorado’s alternator fails, replacing it with a quality used OEM unit restores proper charging system operation.
603 Auto Salvage maintains over 50,000 quality used parts in stock from more than 1,100 vehicles. Our experienced team can help you find the right alternator for your Colorado or answer any compatibility questions. Browse our extensive inventory online or contact us directly for expert assistance with your auto parts needs. 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 – 2.9L Engine |
| Interchange # | 170 |
| OEM Part Number | Contact for OEM# |
| Side | N/A |
| Part Grade | C — Grade C – Functional condition with 204K miles, inspected and ready to ship |
| Warranty | 30-Day Warranty (Higher mileage component with standard coverage) |
| Type | Used OEM |
Vehicle Information (Donor)
| Year / Make / Model | 2008 GM TRUCKS COLORA |
| VIN | N/A |
| Vehicle Stock # | 0120251627 |
Our Testing & Inspection Process
Every part at 603 Auto Salvage is inspected before listing. Here is what was verified on this Alternator Assembly – 2.9L Engine:
| ✅ Electrical connections | All terminals and wiring connections inspected for damage |
| ✅ Housing condition | Case checked for cracks, damage, and proper mounting points |
| ✅ Pulley assembly | Pulley verified for proper alignment and secure attachment |
| ✅ Internal components | Unit tested for proper charging output and functionality |
| ✅ Mounting brackets | All mounting points and brackets verified intact |
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 |
|---|---|---|---|
| 2008 | GM Trucks | Colorado | 2.9L 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 2008 Chevrolet Colorado?
This alternator is specifically for 2008 GM Trucks Colorado models with 2.9L engines. Please verify your engine size and contact us with your VIN for guaranteed compatibility confirmation.
How do I know if my Colorado alternator is failing?
Common signs include battery warning lights, dim headlights, electrical issues, or a dead battery that won’t hold a charge. Strange noises from the alternator area can also indicate bearing failure.
What is interchange number 170 for alternators?
Interchange 170 is the industry standard reference number for this alternator application. This number helps identify compatible alternators across different part suppliers and salvage yards.
Is this a remanufactured or used OEM alternator?
This is a used OEM alternator removed from a donor vehicle, not remanufactured. It has been inspected for functionality and is ready to install in your Colorado.
How long does alternator installation typically take?
Professional installation usually takes 1-2 hours depending on accessibility. The process involves disconnecting the battery, removing the serpentine belt, and unbolting the alternator from its mounting bracket.
Related Parts & Resources
OEM Part Numbers & Cross-Reference
Looking for this part by number? Here are the reference numbers:
| Interchange Number | 170 |
| Engine Application | 2.9L |
| Stock Number | 0120251627 |
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 | $90-140 | Varies | Non-OEM fitment, quality varies |
| Other Salvage Yards | $60-80 | 30–60 days | Varies in quality and testing |
| 603 Auto Salvage | $50 | 30-Day Warranty | Tested, Grade C, ships in 24hrs |
Installation Notes
- Disconnect the negative battery cable before starting alternator removal
- Take a photo of wire connections before disconnecting to ensure proper reassembly
- Check serpentine belt condition and replace if worn while alternator is accessible
- Verify proper belt tension after installation to prevent premature alternator failure
🔍 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.




Reviews
There are no reviews yet.