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Tell Us More About Your Chevrolet Trailblazer EXT. View all models

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By giving you an extended wheel base and much more passenger room in your Trailblazer, Chevrolet provided the perfect vehicle for taking the whole crowd along. A faulty Chevrolet Trailblazer EXT radiator cap leads to a malfunctioning cooling system, but AutoZone carries the replacement you need to restore your transportation.

We're sorry, but there are no results in this parts category for Chevrolet Trailblazer EXT. Please select another vehicle or click on the Parts tab at the top of the page to see the available parts for this vehicle.

When your radiator cap for Chevrolet Trailblazer EXT has a leak or doesn't seal tightly, it no longer acts as the pressure-release valve your cooling system requires. The motor is at risk for overheating when the radiator doesn't function correctly, and that often leads to permanent damage. Replacing the radiator cap is a simple fix, and AutoZone carries Trailblazer EXT radiator caps designed to fit your engine. Trustworthy advice from the helpful staff is available to get you on your way faster.

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