SOURCE: coolant not circulating
I assume you know that the only circulation happening unti lthe thermostat opens at its nominal temperature is through the heater core if in use.
If peering into the radiator opening, you will not see more than the most minimal movement until the thermostat opens.
You may have an airlock in the system and it could be in the heater lines so if you have done a coolant change or had the system open, you need to purge the system of air.
If you have no radiator cap like many newer vehicles, this isn't as easy to accomplish.
You will have to pass through several cycles of warmup and cool-down and each time refill the reservoir to the marked level with coolant mix.
During this, you will have to have the heater control set to warm the interior so that the coolant is forced to circulate throughout the whole system.
SOURCE: 1997 oldsmobile aurora Blower motor stopped
Could be the motor or the blower motor resistors. I would go with the resistors first.
SOURCE: i have a 1999 aurora
Everything you need to know is on this site. I found this site here on Fixya when my car was doing the same "security" thing. Fixed mine for really cheap. Its funny cuz i just keep seeing the same problem come up over and over, so i guess i'll just keep reposting this link. Good luck. http://vatspasslockpasskeysecurityhelp.yolasite.com/
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