For those with 1997+ models with MDC controlled instruments don't forget to remove the pitot hose's from the MDC. The MDC is the computer under the dash, DO NOT pull the hose's off the plastic barb pressure sensor cold, cold stiff hoses will snap off the hose barb fitting, heat the hose end up carefully then they will come right off. Some have modified theirs with a small tee and short piece of drain hose with a valve to make this easier, bottom line is that any water that has made it up the hose & into the pressure sensor will freeze and crack the sensor.
RonT