hey thanks guys for the help with the wheel hub. now im working on the duct work. the air only blows out the defrost and floor vents. im think its a vacume problem but im having trouble locating the vacume pod. am i on the right track? any sudgestions?

See if this helps:

https://www.gmforum.com/t279092/

Come back and tell us if this helped or not. Good luck.

The floor/defrost is a default setting when no vacuum is present to move the actuator.

The two common causes of this are the vac line from the manifold of the engine is disconnected or broken between the manifold and the vacuum canister (92-95 on firewall next to wiper motor, 96-99 under passenger front fender, 00+ unsure of location) or 96-99 the programmer nipples have collapsed.

The first is pretty straight forward and can be tested at the purple incoming hose at the HVAC programmer under the dashboard (96-99) and info on the second can be found by searching "Vents" by "James Tharp"

thanks for the info. i printed it and will investigate the problem with my new found information. i will let you know how it goes.