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The cause of your power doors and locks and radio volume not to work could be a blown fuse. Locate the proper fuse to ensure it has not blown.
Possibe blown fuse
If the power door locks quit working on a 1979 Corvette, it is due to broken pigtail switches. With age and use, the pigtails break and leaves the power door locks inoperable.
If your power window is not working and there is no loose wiring or bad fuses, it might have a bad window motor. The motor and the actuator can cause the window to work intermittently.
It can be your battery, when it doesn't have enough power the computer will not allow you to use power stuff. It can be also one of the relays which are responsible for stuff like power locks, power windows and so on.
There could be many reasons for the radio and power locks are not working such as a lose or broken fuse or the body control module is broke. You can check by trying keyless fob then checking the fob batteries and car battery. If all of those things don't work it is the body control module, get it fix.
Check your fuses.
Check the fuse and relay.
Check the fuses.
The driver door does not unlock the power locks for a few reasons. This motor could be burned out or the wires could not be attached correctly.
yes, it is a fuse it will be labled int. lights/ horn on the fuse box
sounds like a blown fuse. chec under hood and under dash fuses.