Caprice RWD V8-305 5.0L (1992)
1.
Remove A/C Module Lower Evaporator Case per Service Manual, Section 1B. Front screw may be hidden by carpet and difficult to access. Use of
a 7 mm flex head socket may be helpful. (See Figure 1 for attaching points).
2.
Remove/disconnect Heater Core - per Service Manual, Section 1B.
3.
Disconnect vacuum harness gang plug connector at rear of module. Apply vacuum to the gray vacuum line on the female gang connector to actuate
the heater shut off door into the closed position.