A/C Control Mode Select Lever - High Operating Effort
Number 84-1-5Date 6/84
Subject: HIGH OPERATING EFFORT ON A/C CONTROL
MODE SELECT LEVER - 1984 FIREBIRD
High operating effort on A/C control mode select levers may occur on some 1984 Firebirds. Highest effort is experienced when moving the lever from heater to defrost.
This condition can be due to the vacuum control select valve binding. Affected parts can be identified by the black color of the stator part of the valve.
This condition can be repaired by replacing the vacuum select valve assembly with one that has a white stator. Part number is the same for both designs (16032395).