My 07 suburban and 08 silverado radios both have same issue. The lower front speakers do not work. Tweeters still work. You also can't here the door chime when keys are left in the ignition.
Lower front speakers are not working. Not even when door chime is supposed to be on. You can barely hear
try removing door panels, and with a bright light, look for wire issues, corrosion, etc, check connectors, remove speakers andattatch to stereo to see if they even still work, remove protective tube, door to body thing, for any issues, if no, remove stereo and look for anything obvious, if no, expectit to be the stereo
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