Cabin Air Filter Replacement: 2003 Chevrolet Trailblazer EXT LT 4.2L 6 Cyl. EXT LT 4.2L 6 Cyl.

Our research indicates that your vehicle does not have a cabin air filter (also known as a pollen or AC filter). Vehicles without cabin air filters typically have a plastic mesh that prevents leaves and other foreign objects from entering the HVAC system. This mesh is part of the vehicle and does not need to be changed.

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Hans Angermeier has produced over 100,000 videos showing drivers how to fix things on their cars. He has broad expertise on basic repair procedures covering the majority of cars on the road.

Replace the front turn signal

If your blinker doesn't blink, or blinks rapidly, you likely have a burnt out bulb

2005 Chevrolet Trailblazer LS 4.2L 6 Cyl.

Add antifreeze

Low coolant levels is all to common - top yours up today

2005 Chevrolet Trailblazer LS 4.2L 6 Cyl.

Replace your air filter!

Replacing a dirty air filter can improve gas mileage by up to 4%. Isn't efficiency great?

2005 Chevrolet Trailblazer LS 4.2L 6 Cyl.

Check transmission fluid level

Harsh downshifts? Slipping gears? You might be low on transmission fluid

2005 Chevrolet Trailblazer LS 4.2L 6 Cyl.