2021 - 2024 Chevrolet Trailblazer Washer Reservoir Assembly (OEM)

What to look for when buying this part:

• Check for cracks or damage to the reservoir body.
• Inspect the pump motor for any signs of wear or corrosion.
• Ensure all hose connections are intact and not brittle.
• Verify the part includes all necessary components like the cap and pump grommet.

Quality indicators:

• Material: Look for durable plastic that can withstand temperature changes.
• Seals: Check that the seals are in good condition to prevent leaks.
• Pump: Ensure the pump operates smoothly and quietly.

What's typically included:

• The washer fluid reservoir
• The washer fluid pump motor (sometimes)
• The reservoir cap
• Grommets or seals for the pump

Difficulty level and estimated time:

• Difficulty: Easy to Medium
• Estimated Time: 30 minutes to 1 hour

Special tools needed:

• Socket set
• Screwdrivers
• Pliers (optional)

Critical steps and tips:

1. Disconnect the battery: This is a safety precaution to prevent electrical shorts.
2. Drain the old reservoir: Remove as much washer fluid as possible before removing the reservoir.
3. Disconnect the hoses and electrical connector: Carefully detach the hoses and electrical connector from the pump.
4. Remove the old reservoir: Unbolt or unclip the old reservoir from the vehicle.
5. Install the new reservoir: Install the new reservoir in the reverse order of removal.
6. Reconnect the hoses and electrical connector: Make sure all connections are secure.
7. Refill the reservoir: Fill the reservoir with washer fluid.
8. Test the system: Activate the washer system to ensure it's working properly.

DIY or professional installation:

• DIY is possible for those with basic mechanical skills. If you are not comfortable working on your car, professional installation is recommended.

| Feature | Used OEM any | Factory parts that have been tested and inspected and are available at a significantly lower price. | | | | Used OEM | Factory parts that have been tested and inspected and are available at a significantly lower price.

Compare:

• Used OEM: 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.

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.

Parts commonly replaced or checked at the same time:

• Windshield washer pump
• Windshield washer nozzles
• Windshield wiper blades
• Washer fluid hoses

Why replacing related parts prevents repeat failures:

• Replacing worn or clogged nozzles ensures proper spray pattern.
• Replacing brittle hoses prevents leaks.
• A failing pump can strain the reservoir, leading to cracks.
• New wiper blades ensure the windshield is clean for optimal visibility.

How long this part normally lasts:

• A washer reservoir can last the lifetime of the vehicle, but is susceptible to damage from impacts or extreme temperatures. The pump motor typically lasts 5-7 years.

Factors that affect longevity:

• Quality of the plastic material
• Exposure to extreme temperatures
• Impacts or collisions
• Type of washer fluid used (some fluids can be corrosive)
• Frequency of use

Budget vs mid-range vs premium options:

• Used OEM: $30 - $60
• Refurbished OEM: $50 - $80
• New Aftermarket: $40 - $70

Labor cost considerations:

• Labor costs for replacing the washer reservoir assembly typically range from $50 to $150, depending on the shop and location.

Total job cost estimates:

• DIY: $30 - $70 (part only)
• Professional Installation: $80 - $220 (part + labor)

Known issues for this vehicle's system:

• Some 2020-2024 Buick Encore GX and Chevrolet Trailblazer models have reported issues with the washer fluid pump failing prematurely.
• The location of the reservoir can make it vulnerable to damage in minor front-end collisions.

Any TSBs or common complaints:

• Check with your dealer or online resources for any Technical Service Bulletins (TSBs) related to the washer reservoir or pump for these specific models.

How to confirm proper operation:

• Fill the reservoir with washer fluid.
• Activate the windshield washer system.
• Check that washer fluid sprays from all nozzles with good pressure.

What to look/listen for:

• Listen for the pump motor running smoothly.
• Observe the spray pattern on the windshield. It should cover the entire windshield.
• Check for any leaks around the reservoir and hose connections.

Q: How do I know if I need to replace the whole reservoir or just the pump?
A: If the reservoir is cracked or leaking, you need to replace the whole assembly. If the pump is not working but the reservoir is in good condition, you might be able to replace just the pump.

Q: Can I use regular water instead of washer fluid?
A: No, it is not recommended. Regular water can freeze in cold weather and damage the reservoir and pump. Washer fluid also contains detergents that help clean the windshield.

Q: How often should I refill my washer fluid reservoir?
A: Refill the reservoir whenever the low washer fluid warning light comes on, or when you notice the spray pressure is weak.

Q: Is it difficult to replace the washer reservoir assembly myself?
A: It's generally a straightforward repair. If you're comfortable with basic car maintenance and have the right tools, you can likely do it yourself.

Q: Where is the washer reservoir located on my Buick Encore GX or Chevy Trailblazer?
A: It's typically located in the engine compartment, near the front of the vehicle on either side. Consult your owner's manual for the exact location.

OEM Part Numbers:

• Chevrolet: 42748842, 42769266

Fits Years: 2021 2022 2023 2024