Some 2005-07 Chevrolet Corvettes may experience buzz or static in the radio when the engine is off but the HVAC is on. The noise diminishes as blower speed is lowered and increases as the blower speed is increased. The EMI appears to come from the blower motor itself.

A main body IP harness located under the IP on the passenger side is routed past the blower motor. To correct the concern, move the body IP harness forward away from the blower motor and secure with a tie strap.The tie straps should be added either to the HVAC case corner or to the opening in the toe bracket.