I have poor AM/FM Radio Reception in a 1999 Olds Alero. I've replaced the antenna/defogger module but still not a great deal of improvement in the radio reception (especially the AM Reception) The reception seems better when I am parked in the garage. What could be the proglem

SOURCE: 2003 olds alero rear windoe defogger

the rear passager panel the one that cover the side rear window there a relay connector in there that were the power to window go that defectif that gonna FIXYA our post thank you pierre

SOURCE: rear window defogger stopped working

More than likely something has scratched the film that heats up to do the defrosting, Look to make sure it has both wires attached, and use either a test light (make one out of a 12volt bulb and wire if you do not have one.) See if you have electricity to the wires at the ends. If you do, you have a break in the film. You should be able to see where it is broken or scratched. There is an after market repair kit for this, that is not really expensive.

SOURCE: CHANGED BATTERY IN 2000 OLDS

your car is setup with an anti-thief system. You need the radio code that is inside your radio. Check your owner manual for the 4 digit number. If not in there then you need to take it into the dealer to unlock it.

SOURCE: no reception on radio, all static exept for a few times and I can

Chk. for corrode antena cable that plugs into back of radio.

SOURCE: im hooking up a pioneer radio in a 1999 alero

anytime you are installing aftermarket stereo in car you should purchase wiring harness converter which comes with schematic, but if you insist on doing it old school youll need a repair manual to show color codes on wiring or a 12 light meter but lucky for you I looked up the wiring codes online heres link:
http://www.the12volt.com/installbay/stereodetail/1690.html