How do I check my 1997 Cadillac Catera to see why radio won,t work whe car is started but comes on when it is turned off?

SOURCE: 1997 cadillac catera blower motor problem

http://www.autozone.com/shopping/repairGuide.htm?pageId=0900c152800c1846

good luck. Free online guide to your car.

Thank you so much for checking your fuses first. Its so refreshing to know people still know how to do basic trouble shooting.

SOURCE: I drive a 2000 cadillac catera and when I shut the car off, when i turn the car back on, none of the controls for the radio, sometimes the trunk lock button, fuel tank door button will work. Then afte

K134 Multifunction relay.

SOURCE: 1997 cadillac deville delagance - anti theft device

I've got a 97 deville d'elegance that has issues similar to these. Last year the red anti-theft light came on and the car wouldn't start-took it to the dealership and they replaced the PCM? (the main brain for the system) for $900...the guy told us the wiring was so corroded he didn't want to mess with it much. Today the message started flashing on the dash that says "anti-theft problem/ car may not restart" but it still turned over in the driveway a couple times so I am hoping I can reset it. The wiring system is jacked and will probably need to replace the wiring harness completely. Doubt its worth it. Not a secure feeling with 2 babies in the back seat in the middle of winter....

SOURCE: Car: 2000 Cadillac Catera Radio: Bose Info: Power

K134 Multifunction relay is on the driver side, inside the dash above the driver's left ankle (area). (2) panels need to be removed below the steering column to access this area. The first is a panel that matches your dash. The second is a cardboard panel with foam padding on it that encompasses the arms holding the brake pedal and accelerator. You'll then need to lay on your back on the floor board, head in first. Look for a gray box about 3" square by 1 1/2" thick. Push it 'up' off of it's mounting bracket to release. Unplug the wiring harness. Plug in new relay and re-mount.

SOURCE: the car won't start; lights,

Check the starter and the starter relay or fuse. A client of mines car was doing the same thing, it ended up being two issues, the starter not working anymore, and a relay that was bad. If I am not mistaken everything should be labeled in the fuse box under the hood and will tell you where the fuse/ relay is for your vehicle