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Door Lock Switch
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This photo shows a similar part, not the exact one you'll receive. Since each used part has its own wear, yours may look slightly different.

2006 - 2009 Chevrolet Trailblazer Master Window Switch - Front Left (Driver) (OEM)

✓ IN STOCK
$79.95

ℹ️ Product Notes

This is a used part. It is the main switch for the front door. It fits 4-door vehicles that have manual folding mirrors.

Fits 4-door models with manual folding mirrors. Does not work for power folding mirror systems. Check your old part for a matching number.

Original Part #(s): 15195300, 15202850, 15883319, 25771895, 8257718950
Condition: Excellent (A)
Like new, minimal to no wear
51,815 miles
Odometer reading when part was removed
See Other Chevrolet Trailblazer Door Lock Switchs
SKU #
0374961-L20200-146

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 2006-2009 (tapclick to expand)(tapclick to hide)
Swipe left/right to see more info
SubmodelSUB-
MODEL		 Body Style Years Engine Attributes
A SUV 2006 - 2007 L6 4.2L RWD | Automatic
B SUV 2006 - 2007 L6 4.2L RWD | Automatic
B SUV 2006 L6 4.2L 4WD | Automatic
Base SUV 2006 - 2008 L6 4.2L RWD | Automatic
LS SUV 2006 - 2007 L6 4.2L RWD/4WD | Automatic
LS SUV 2006 - 2007 V8 5.3L RWD/4WD | Automatic
LT SUV 2006 - 2009 L6 4.2L RWD/4WD | Automatic
LT SUV 2006 - 2008 V8 5.3L RWD/4WD | Automatic
SS SUV 2006 - 2009 V8 6.0L AWD/RWD | Automatic
Base SUV 2008 L6 4.2L 4WD | Automatic
Base SUV 2008 V8 5.3L RWD/4WD | Automatic

⚠️ 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

Is your driver's side window not working right? Here's how to tell if the master window switch might be the problem:

  • Windows Not Responding: The most common sign is when one or more windows won't go up or down when you press the switch.
  • Intermittent Operation: Sometimes the window works, sometimes it doesn't. This can be a sign of a failing switch.
  • Only Works in One Direction: The window might go down but not up, or vice versa.
  • Other Windows Affected: The master switch controls all windows. If other windows are acting strangely, it could be the master switch.

How to test if it's the switch:

  1. Try the individual window switches on the other doors. If those work, the problem is likely the master switch.
  2. Check the window motor. If the other window switches work, the motor is probably fine.
  3. Inspect the wiring. Look for any damaged or loose wires connected to the master switch.

Common causes of failure:

  • Wear and Tear: Over time, the switch contacts can wear out from repeated use.
  • Spills: Drinks spilled on the switch can cause corrosion and damage.
  • Electrical Issues: Problems in the car's electrical system can damage the switch.
  • Dust and Debris: Dust and dirt can get inside the switch and cause it to malfunction.

Buyer's Checklist

Here's what to consider when buying a replacement master window switch:

  • Check the Appearance: Make sure the switch looks clean and undamaged.
  • Test the Buttons: If possible, test the buttons to make sure they feel solid and click properly.
  • Verify Compatibility: Even though this switch fits many vehicles, confirm it's the right one for your exact year, make, and model.

Quality indicators:

  • OEM Markings: Original Equipment Manufacturer parts often have markings that indicate their origin.
  • Solid Construction: The switch should feel sturdy and well-made.
  • Warranty: A warranty can give you peace of mind that the part is reliable.

What's included:

  • The master window switch itself.
  • Sometimes, installation instructions (though these are often generic).

Installation Overview

Replacing the master window switch is usually a straightforward job.

  • Difficulty: Easy to Moderate
  • Estimated Time: 15-30 minutes

Tools you might need:

  • Screwdriver (usually a flathead or Phillips head)
  • Panel removal tool (optional, but helpful)

Critical steps:

  1. Disconnect the Battery: This is a safety precaution to prevent electrical shock.
  2. Remove the Old Switch: Use a panel removal tool or screwdriver to carefully pry out the old switch.
  3. Disconnect the Wiring Harness: Unplug the wiring harness from the old switch.
  4. Connect the New Switch: Plug the wiring harness into the new switch.
  5. Test the Switch: Before reassembling everything, test the new switch to make sure all the windows work.
  6. Reinstall the Switch: Snap the new switch into place.
  7. Reconnect the Battery: Reconnect the battery.

DIY or Professional?

  • This is generally a DIY-friendly project. However, if you're not comfortable working with electrical components, it's best to have a professional install it.

Buying Options

You have a couple of choices when buying a replacement master window switch:

  • Used OEM
  • New Aftermarket

Used OEM:

  • Benefits: Genuine factory part, often less expensive than new, tested to ensure it works.
  • Considerations: May have some cosmetic wear, but should function like new.

New Aftermarket:

  • Benefits: Brand new, often more readily available.
  • Considerations: Quality can vary between brands.

Typical Lifespan

A master window switch typically lasts for:

  • 5-10 years or more

Factors that affect longevity:

  • Frequency of Use: The more you use the windows, the faster the switch will wear out.
  • Environmental Conditions: Extreme temperatures and humidity can shorten the lifespan of the switch.
  • Quality of the Part: A higher-quality switch will generally last longer.

Price Ranges

Here's what you can expect to pay for a replacement master window switch:

  • Budget: $30 - $60
  • Mid-Range: $60 - $100
  • Premium: $100 - $150+

Labor costs (if applicable):

  • Labor to install the switch typically costs $50 - $100, depending on the shop.

Total job cost estimates:

  • DIY: $30 - $150+ (depending on the part)
  • Professional Installation: $80 - $250+ (part + labor)

Vehicle-Specific Notes

Some vehicles in this range (2007-2012 Buick, Chevrolet, GMC, & Saturn) are known to have issues with moisture getting into the door panels, which can corrode the window switches. Regularly cleaning and drying the area around the switch can help prevent this. Some owners have also reported issues with the wiring harness connector becoming loose over time.

Verification After Install

After installing the new master window switch, make sure to:

  • Test All Windows: Check that all windows go up and down smoothly.
  • Listen for Unusual Noises: Pay attention to any grinding or clicking sounds from the window motors.
  • Check for Proper Alignment: Ensure the windows seal properly when closed.

If everything works correctly, you're good to go!

FAQ

Q: How do I know if it's the master window switch or the window motor? A: If the other window switches work, but the master switch doesn't control that window, it's likely the master switch. If none of the switches work for a particular window, it could be the motor.

Q: Can I clean the old switch to try and fix it? A: Yes, you can try cleaning the switch contacts with electrical contact cleaner. However, this is often a temporary fix.

Q: Is it hard to install a new master window switch? A: No, it's usually a pretty easy job. You'll need a screwdriver and maybe a panel removal tool.

Q: Will a new master window switch need to be programmed? A: No, this switch does not require programming. It should work as soon as it's installed.

Q: How long will a used OEM switch last? A: It's hard to say exactly, but a used OEM switch should last several years if it's in good condition.

Part Specifications

OEM Part Numbers:

  • GM: 15195300, 15202850, 15883319, 25771895
  • Isuzu: 8257718950

Fits Years: 2006 2007 2008 2009

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