To find the oil capacity for your 2005 Chevrolet Trailblazer, I recommend checking:
* Your owner's manual: This is the most reliable source for this information.
* The dipstick: The dipstick on your engine will indicate the oil level. It may also have a mark indicating the full capacity.
* A trusted online resource: Websites like AutoZone, Advance Auto Parts, or the Chevrolet website may have information on oil capacity for your specific model.
* Your local mechanic: A trusted mechanic can give you the correct information for your vehicle.
Please note: The oil capacity may vary depending on the engine size and configuration of your specific Trailblazer.