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i have a 03 tahoe with no bose or onstar. i replaced the HU and all 4 door speakers. the front speakers do not work at all. i removed the unit and front speakers and bench tested the unit which worked fine. once i put it all back in the vehicle same issue no sound from front speakers. i cannot locate the amp in this model, i have checked the glove box, the center console is a third seat with the fold down arm rest. where else could this amp be?
any help would be greatly appreciated
In a kickpanel or panel in the very back sidewall maybe.
Only the Bose system equipped truck had an eternal OEM amplifier, which was located under the center console. If the front speakers aren't working, then there's a wiring issues somewhere.
Perhaps easier than locating the issue would be to run new speaker wire from the HU to each front speaker.
I know the front door woofers were wired in parallel with the tweeters, perhaps this is where the issue is occurring.
Should be an amp with a single 15 wire harness plug under the instrument panel. Access it by lying on your back and looking up under the dash.
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