Aperently it shuts down because of voltage fluctuations while starting..the battery goes from 13.6-8 down to around 10 volts or 9.5 which most electronics cant operate on..try this..leave the radio off until startup is done.. and for power come off of the lighter circuit that stays on all the time.. use the radios power lead and the memory together with a 5 amp fuse and a separate switch for power until the car is running..the only drawback is resetting the clock and station memory each time..
SOURCE: my 2005 chevy cobalt factory radio is locked
There are only 2 things you can try to fix this yourself: turn off the engine and open the driver side door (to turn the radio off). Wait 5 minutes, start your car.
If that does not solve it, turn off your engine, disconnect the car battery, wait about 5 minutes. Reconnect the battery (negative pole first - black connector) and try your radio again.
If neither one of these two fix your problem, I am afraid only a GM service center or dealership can fix the problem. The Cobalt is notorious for all kinds of electrical issues.
Thanks for using the fixya forums!
SOURCE: Ignition and Transmisssion Locked on 2000 Chevy Malibu
I had a similar problem on a 2001 GM product. The problems all stemmed from a worn out key. Keys are made from softer metals so that they wear out before the expensive cylinder does. Debris had collected in the cylinder preventing ANY key from turning it - corrected that with compressed air. Replaced the key at the dealer by providing the VIN and my ID w/registration - $10.00. Kept the old keys because they still worked for opening the trunk. Try it, I bet your symptoms and fix actions are very similar, at least, I hope so. Regards.
SOURCE: code to unlock radio on a chevy malibu
you will need to call the dealer and give them the vin number witch is on the dash
SOURCE: 2008 chevy malibu. how to program keyless entry remote
You must take it to the Chevy dealer.
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SOURCE: 2000 chevy malibu radio unlock help??
are u the original owner of the car ?if so do you still have the books that came with the car? look for the delco radio book !there should be a card in there with a code and instructions! if not the only wasy is to go to the dealer or a radio repair shop to have it unlocked!
then unlock it and start the car again.if this won't work probably it's the theft alarm stopping the engine from starting
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