Problem with my 2002 Pontiac Grand Am blower
2.2 Ecotec

GM tech = JK
question = Just bought the car from my sister. Says the following has
happened for years.

The blower motor comes on while the engine is off every hour or so. Runs
for about 10 seconds. Never causes a low battery situation. Doesn't seem
to be normal, but I guess it could be to prevent a/c odor smell from mildew.
Didn't see anything about it being a feature of the car in the owner's
manual. Is it normal?







JK:
Yep, you got it exactly. It is to help dry the evaporator coil and case to
prevent mold and mildew. It is called "Afterblow". Not all models have this
feature. Normally on models being built to ship to warmer states. GM even
has a kit that can be installed on vehicles that were built without this feature.
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The blower motor comes on while the engine is off every hour or so. Runs for
about 10 seconds. Never causes a low battery situation. Doesn't seem to be
normal, but I guess it could be to prevent a/c odor...