Did the old radio have any sound? Do you get a strange code on the radio display indicating that you are locked out?
You might have to pull the radio back out and make sure that the speaker connection plug is plugged in securely.
Dash ground is loose.
It stands for Speed Compensated Volume http://www.google.co.uk/search?hl=en&q=pontiac+sunfire+interior+radio+scv+&meta=
The radio on your 2000 Sunfire is probably reading "loc". If this is the problem, you need to go to a Pontiac dealer and pay them to unlock the radio. This is an anti theft device to insure your radio can not function if it is removed. The cost is from 10 to 20$
Main ground for dash is loose.
This sounds like an issue with a fuse. In newer sunfires, if the Radio/ACC fuse blows, no indoor lights work and nothing will turn itself off when the car is off (meaning your daytime lights will stay on even with no key in the ignition). It's a 20w minifuse, walmart sells a pack for about $3.50.
the dealership for that brand of car
mine doesn't. which i hate..=/
Buy a new radio and install it
the answer is that you need to go to a firestone or certified Pontiac dealership to find out. They have most of the codes on a computer database, but try 4663757AVW556VVC
Different for every vehicle. Contact your dealer if you didn't get the card that came with your car.
# Disable the airbag system # Remove the accessory trim plate # Remove the radio retaining screws # Pull out the radio and disconnect the electrical connections and antenna lead # Remove the radio from the car
E23 Communication Error: There is a vehicle/radio communication problem or an inter radio communication problem, Correction: Disconnect battery voltage to the radio and then reconnect after a few minutes.