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The 2006 Chevy Impala is equipped with an evap canister that features a vent mounted on the side of the charcoal canister, situated beyond the catalytic converter and over the muffler of your vehicle. If the canister becomes defective or experiences an exhaust leak from wear and tear or cracks, it will require replacement. Expect to spend roughly between $148 and $240 for the replacement parts alone. Opting for professional installation by a mechanic or auto technician will increase the total cost to approximately $190 to $380 for labor.
The 2006 Chevy Impala's evap canister, also referred to as the purge valve, can be found positioned near the back end of the car above the muffler.