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Alternator
This photo shows the same type of part you'll receive. Since each used part has its own wear and scratches, yours may look slightly different. Check the product notes for details about the condition of this specific part.

2006 Chevrolet Trailblazer Alternator (OEM)

✓ IN STOCK
$79.95

ℹ️ Product Notes

This is a used alternator assembly. It has a 4-wire connector.

Check your old part for a 4-pin connector. This is a high-output 145 amp unit. Verify your engine size on the door sticker.
Condition: Excellent (A)
Like new, minimal to no wear
136,430 miles
Odometer reading when part was removed
See Other Chevrolet Trailblazer Alternators
SKU #
6434545-36500-106

Why Buy Used OEM Parts?

✓ Quality-Verified: Every used OEM part we sell has been professionally inspected and tested to ensure it meets our quality standards. While it may show some cosmetic wear from previous use, it's fully functional and ready to install.

✓ Original Equipment: This is a genuine OEM (Original Equipment Manufacturer) part - the exact same part that came with your vehicle from the factory. It's designed specifically for your make and model, ensuring perfect fitment and performance.

✓ Works Like New: Despite some visual wear, this part will perform just as well as a brand new one. The internal components and functionality are intact, giving you the same reliability you'd expect from OEM quality.

✓ Significant Savings: Save 50-80% compared to buying new! Used OEM parts offer exceptional value - you get factory quality at a fraction of the cost. It's the smart choice for budget-conscious vehicle owners who won't compromise on quality.

✓ Risk-Free Purchase: We stand behind our used parts with a generous 6-month warranty, 30-day returns, and 100% money-back guarantee. If it doesn't work out for any reason, simply return it for a full refund. You have nothing to lose!

🛡️ 30-Day Returns + 6-Month Warranty - Buy with Confidence!

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Vehicle Fitment Guide

This part fits the following vehicles:

Chevrolet
Trailblazer 2006 (tapclick to expand)(tapclick to hide)
Swipe left/right to see more info
SubmodelSUB-
MODEL		 Body Style Years Engine Attributes
LS SUV 2006 V8 5.3L RWD/4WD | Automatic | Fits 5.3L V8 engine models
LT SUV 2006 V8 5.3L RWD/4WD | Automatic | Fits 5.3L V8 engine models

⚠️ Important: Please verify your vehicle's year, make, model, and specifications before ordering. If you're unsure about fitment, contact our customer service team for assistance.

Policies

Shipping & Handling

  • Standard shipping: 3-7 business days via UPS Ground
  • Parts are carefully packaged to prevent damage during transit

Returns (30 Days)

We accept returns within 30 days of delivery for this part.

  • Defective parts: We will replace the part or issue a refund at our discretion
  • Electronic parts: Must be returned with the sealed inspection bag unopened. The clear bag allows full visual inspection before opening. Once opened, electronic parts can only be exchanged for a replacement if defective — no refunds
  • Programming: "Needs to be programmed to my vehicle" is not a valid return reason. Many modules require dealer programming — we're happy to help connect you with resources if your dealer says it's not programmable
  • Return shipping: We cover return shipping as part of our 100% money-back guarantee
  • Parts must be returned in original packaging and unmodified condition
  • Poorly packaged returns that arrive damaged will not be credited

6-Month Warranty

All used parts include a 6-month warranty from the date of purchase.

  • If your part fails within 6 months, we will send a replacement
  • Refunds are only issued if we cannot provide a suitable replacement
  • Warranty covers defects — not installation errors, misuse, or damage after installation

Note: Warranty is for replacement, not refund. A part failing on day 80? We'll replace it. But the return window for refunds is 30 days.

Damaged in Shipping?

If your part arrives damaged:

  • Stop immediately — do not install the part
  • Keep all original packaging and boxes
  • Take clear photos of the damage and packaging
  • Contact us within 48 hours of delivery

We will handle the carrier claim. You are not responsible for shipping damage — we just need your help documenting it.

Order Cancellation

Orders can be cancelled before shipment for a full refund. Once shipped, cancellations follow our return policy.

Symptoms & Diagnosis

Warning Signs Your Alternator is Failing

  • Dim or flickering headlights, especially at idle
  • The battery warning light on your dashboard is on
  • Slow or struggling engine crank when starting
  • Strange noises coming from the engine, like whining or grinding
  • Electrical problems, such as power windows operating slowly or the radio cutting out

How to Test if This Part is the Problem

  1. Check the battery: A weak battery can mimic alternator problems. Have your battery tested first.
  2. Visual inspection: Look for obvious damage to the alternator, such as cracks, loose wires, or corrosion.
  3. Voltage test: Use a multimeter to check the voltage at the battery while the engine is running. It should be between 13.5 and 14.5 volts.
  4. Load test: Have a professional perform a load test on the alternator to see if it can maintain the correct voltage under load.

Common Failure Causes for This Part

  • Age and wear: Like any mechanical part, alternators wear out over time.
  • Overheating: Excessive heat can damage the alternator's internal components.
  • Bad bearings: Worn bearings can cause noise and eventually lead to failure.
  • Electrical overload: Too many accessories or a short circuit can overload the alternator.
  • Loose or corroded connections: Poor connections can prevent the alternator from charging properly.

Buyer's Checklist

What to Look for When Buying This Part

  • Correct fit: Make sure the part is designed for your specific vehicle year, make, and model.
  • Amperage rating: The amperage rating should match the original alternator's rating.
  • Warranty: Look for a part with a good warranty.

Quality Indicators for the Available Options

  • Used OEM: Look for parts that have been tested and inspected. Ask about the mileage of the donor vehicle.
  • Refurbished OEM: Check if the part has been professionally rebuilt with quality components.
  • New Aftermarket: Research the brand and read reviews to ensure the part is reliable.

What's Typically Included with the Part

  • The alternator itself
  • Sometimes a new pulley (check the product description)

Installation Overview

Difficulty Level and Estimated Time

  • Difficulty: Intermediate
  • Estimated Time: 1-3 hours

Special Tools Needed (if any)

  • Socket set
  • Wrench set
  • Multimeter
  • Belt tensioner tool (may be required)

Critical Steps and Tips

  1. Disconnect the battery: Always disconnect the negative battery cable before working on electrical components.
  2. Remove the serpentine belt: Use a belt tensioner tool to relieve tension on the belt and remove it from the alternator pulley.
  3. Disconnect the wiring: Carefully disconnect the electrical connectors from the alternator.
  4. Remove the old alternator: Unbolt the alternator from its mounting bracket and remove it from the vehicle.
  5. Install the new alternator: Install the new alternator in the reverse order of removal.
  6. Reconnect the battery: Reconnect the negative battery cable.

Whether DIY is Recommended or Professional Installation is Better

  • DIY is possible for mechanically inclined individuals. If you are not comfortable working on your car's electrical system, professional installation is recommended.

Buying Options

| Option | Description increase] | Used OEM: Best value - genuine factory parts, tested and inspected, at significantly lower prices

  • Refurbished OEM: Factory parts professionally restored with new components
  • New Aftermarket: Brand new third-party parts built to OE specs
  • Present all options as good choices; do NOT make Used OEM sound unreliable
  • Do NOT mention "New OEM" as an option (we don't sell new OEM)
  • Do NOT list any part numbers
  1. Related Parts
  • Parts commonly replaced or checked at the same time
  • Why replacing related parts prevents repeat failures
  1. Typical Lifespan
  • How long this part normally lasts
  • Factors that affect longevity
  1. Price Ranges
  • Budget vs mid-range vs premium options
  • Use standard dashes (-) not fancy dashes for price ranges
  • Labor cost considerations if applicable
  • Total job cost estimates
  1. Vehicle-Specific Notes
  • Known issues for this vehicle's system related to this part
  • Any TSBs or common complaints
  1. Verification After Install
  • How to confirm proper operation
  • What to look/listen for to verify it's working correctly

Include Q&As in an FAQ section with 3-5 common questions buyers ask about this specific part.

IMPORTANT RULES:

  • Start IMMEDIATELY with "

Symptoms & Diagnosis"

  • Do NOT include ANY part numbers (no OEM numbers, no aftermarket numbers, no Hollander numbers)
  • Do NOT mention specific retailer names
  • Write at a 6th-grade reading level
  • Write "

    • " before each section title (use Title Case)

  • Do NOT include any links or URLs in the output
  • Include comparison tables where helpful

    • LIST FORMATTING - CRITICAL:

    • Use "- " prefix for bullet lists (each item on new line)
    • For numbered steps, put each on its own line
    • Bold list item labels using text
    • NEVER run multiple list items together on one line

    CRITICAL: Use Google Search to verify all factual claims about this vehicle and part.

    Part Specifications

    OEM Part Numbers:

    • GM: 15124532, 15222341, 15222342, 15226003, 15847291, 19118686, 20989651, 21998419, 22781131, 94665137
    • Other: JD

    Fits Years: 2006

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