No heat

[Abbby]

So have very little heat in my 2003 SLE with 98,000 miles with auto system. Temp gauge is good, top rad hose very hot, upper heater core hose hot and lower hose fairly hot.
What I have done:
1) Run motor at 2500 for 10-15 sec multiple times to try and clear any air from heater core.
2) Checked that radiator is full to top with anti freze.
2) Recalibrated actuators
3) Removed glove box liner looking for air temp actuator but not sure what I am looking for. There is a eletrical motor type box on left with a small silver shaft end that does rotate when I change temps for either side. Did not figure out a correlation. Seems this is not the correct one.

Seems I still neeed to find air temp actuator and check and/or my heater core just needs flushing. Any thoughts?
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2003 SLE w/161,000 miles Silver
2003 SLE w/98,000 miles Black

[harofreak00]

http://www.pontiacbonnevilleclub.com/fo ... 25362.html

[impala67]

clean the core. you need to do it from small hole under the main relay center in engine compartment.
spray brake cleaner on the core and rinse with water. note that water will go to co-drivers legroom.

[justin85]

have you tried replacing the thermostat? that could be stuck closed.