"Look on firewall on passenger side very low under heater core."
That is incorrect.
It is hidden under the right front fender just behind the right front wheel liner. You can't see it, you have to remove it by feel. The fan screws have 1/4" heads.
in my 89 Oldsmobile delta 88 , the heater motor was directly under the center of the windshield under the hood. black circular thing.
no not really my 88 we just had to pull the frame off a little
check heater motor
where is the blower motor located a a 1997 oldsmobile achieva
Viewed from the engine compartment, the blower motor is behind the engine on the firewall, towards the center of the car. It is usually black and has two larger wires running to it, one purple and one black.
plastic cover for heater motor
There is none - usually it is the module in the top of the heater / blower box (resistor module) that is the problem.
Depends on what Oldsmobile model you're referring to...
Where is heater blower motor on 1996 Benz C220 located?
Heater motor speed resisters are usually located close or nearby the heater motor.
Put a potato in the exhaust pipe.
Chevy made the 305, Oldsmobile made a 307v8 that was in the 1985 toronado. dextron fluid is what you want and if you have a leak it is probably pan gasket or maybe front pump seal on tranny-my front punp seal started leaking on my 1983 toronado at 300,000 miles with a 307