Chevrolet Repair Questions? Ask a Mechanic for Answers ASAP
It is located on the passenger side of the engine block at the bottom front, close to the crankshaft pulley. You will need to crawl underneath front of vehicle to access the filter. It loosens by turning counterclockwise.
If you do not see it, your trailblazer has an added engine splash shield you will need to remove first:
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