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Re: 02 Dash Display
See if you can wiggle the key while it's working and make it act up, or see if you can wiggle the key while it's acting up and make it stop.
Those modules aren't controlled by the PCM, the PCM only controls the powertrain (eng and trans). They are all connected by the computer data lines, but one failing shouldn't affect the others. The PCM not giving an output to the instrument cluster wouldn't cause the radio to not work, and the radio shouldn't affect (or be affected by) either module. Sounds like you are most likely losing power at one terminal on the ignition switch, from what you said.
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'04 Cavalier coupe M/T 2.2 Ecotec
Supercharged 14 PSI boost, charge air cooler, 42# injectors
Tuned with HP Tuners
Poly engine/trans/control arm bushings
Self built and self programmed progressive methanol injection system
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