Had the battery replaced in my 2004 Colorado. Now the stereo and amps will not power on. Checked fuses etc. this is an after market system. Does the anti theft control still kick in? BTW the guys at Sears auto center were of zero help. They replaced the battery.
Since it's an aftermarket stereo is there a hot wire or wires connected directly to the battery? Same deal with ground wire(s). Check near the battery for any disconnected wires and possibly an inline fuse you may have missed. Also check the stereo wiring at the dash. Perhaps there's a fuse incorporated in the harness adapter that plugs into the truck's wiring harness. HTH. -Jim
Gosh, that was going to be my answer. Did your stereo turn on only when the ignition switch came on? If so check for a lose wire at the fuse box if it was wired into there. Follow the money, or in this case the electricity. A lot of aftermarket applications will bypass the auto's computer and anti theft system and direct wire to the battery or direct power source. If you know who did the installation, go back to them, or call the stereo's customer service to get suggestions.
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