HVAC Blend Door Actuator. HVAC Actuator. 1993 Pontiac Trans Sport 3.1L V6; Actuator; Temp Valve | Front and Rear;. 1993 Pontiac Trans Sport 3.8L V6; Actuator; Temp Valve | Front and Rear;. 1994 Pontiac Trans Sport 3.1L V6; Actuator; Temp Valve | Front and Rear;.