I have a 2004 oldsmobile alero doesn't blow that

Where is gauge low high?

So what's the problem ? your blower motor not working ? Not any speed ? There are two different circuit's , one for the slower speeds an one for high speed alone ! One fuse is in the end of the right Instrument panel fuse box , marked HVAC BLOWER fuse D 20 amp .The other fuse is in the under hood fuse box marked

The 2004 Oldsmobile Alero is a very reliable vehicle. It averages a 6.1 on the steering, handling, and braking tests.
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Heavy Duty Truck Diagnostic
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your blend door motor is stuck or it may need to be replaced. the blend door controls the temp from heat to a/c

look for security light when you turn on key if it lights and doesn't go off leave key on for ten minutes then turn key off and then try to start

It's a shorted or worn out headlight dimmer switch mounted on the column.

hello, it sounds like you may not have injector pulse. You can check for voltage with a volt meter & check pulse with noid lights. Check the ecm Fuses, i think the ecm b fuse powers the injectors. make sure you are getting spark at the plugs. I hope this helps.

Try wiggling the switch around next time it doesn't work. It might be a poor connection in the swithch.

Sounds like a faulty hazard switch these cars are well for thus problem.

if it is blowing cold and you know heater core is good.The actuator for the hot/cold door is possibly inop. Im not sure of your entire situation without more detail but I have seen this occur often.