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A check engine light can indicate a broad spectrum of problems with your 2005 Chevrolet Trailblazer. In some cases you need to pull over immediately to prevent damage while in others you merely need to tighten you gas cap next time you stop in order to reset the service engine soon light. The video above shows how to locate the on board diagnostics (OBD) plug on your 2005 Trailblazer, how to read the trouble codes and how to reset or clear the check engine light using a scanner on your Trailblazer.
Intermittent Check Engine Light: If the check engine light on your 2005 Trailblazer is intermittent, try to take note of the conditions when this happens. For example, does it happen when you accelerating, driving on the highway or does it appear at low speeds? This will help your mechanic evaluate the issue. Steady Check Engine Light: If your check engine light is on every time you operate your Trailblazer, you need to have it checked as soon as possible, especially if you notice performance problems or unusual noises. Flashing Check Engine Light: If your check engine light is flashing, stop driving your Trailblazer and have it towed to your nearest mechanic - you probably have a very serious problem with your car and you risk ruining your engine by driving it. If you are unsure about what your diagnostic trouble codes mean; have your Trailblazer diagnosed by a professional automotive technician.
Many cars will burn or leak a little bit of oil. Over time, this adds up and you might need to add some - learn how to here!2005 Chevrolet Trailblazer LS 4.2L 6 Cyl.
One of the easiest fluids to top off - learn how to open the hood and where the reservoir is on your car2005 Chevrolet Trailblazer LS 4.2L 6 Cyl.
If your blinker doesn't blink, or blinks rapidly, you likely have a burnt out bulb2005 Chevrolet Trailblazer LS 4.2L 6 Cyl.
Harsh downshifts? Slipping gears? You might be low on transmission fluid2005 Chevrolet Trailblazer LS 4.2L 6 Cyl.
Minor transmission fluid leaks can often be fixed with the right sealant - see how to do this2005 Chevrolet Trailblazer LS 4.2L 6 Cyl.
If your battery has green or white cruddy deposits, it is probably not getting enough juice from and will likely wear out sooner2005 Chevrolet Trailblazer LS 4.2L 6 Cyl.