How to Change the Fuel Filter on a Chevrolet Trailblazer – Fuel filters ensure that the gasoline being delivered to your engine is clean and free of harmful debris. They keep your engine supplied with clean gasoline to help it run smoother and last longer. Fuel filters do get clogged, however, and will need to be replace usually every 24 months.
Tools Used: Tools, Pliers, Replacement fuel filter
Change the Fuel Filter
Relieve Fuel System Pressure
Open the fuel door and remove the gas tank cap located on the driver’s side of the vehicle. Pop the hood and locate the fuse box over the driver’s side wheel. Use the diagram underneath the fuse box cover to find the fuel pump relay and disconnect it.