TIP; to all folks who care if their vehicle heats and cools the interior.
Wintertime, turn A/C to cold, run on high setting every 2 weeks minimum.
It keeps the compressor seals and such healthy.
Summertime; turn heat to hot, fan on high, run through cycle of defrost/floor/dash/etc. .
It keeps sediment from settling and clogging the heater-core, an expensive repair.
Now back to our regular scheduled program.
Tikkanut, nice old chebby.
Uh, any time you turn on the defrost, the A/C compressor cycles on any vehicle made in the last 45 years.