The stereo in my 2008 Silverado crew cab has very low volume from the rear speakers even when you fully fade to the back speakers only. Dealer said that was normal, never had a stereo system that didn't allow you to fade front to back and have good volume from the back speakers. It is frustrating to trun up the overall volume enough so those in the back seat can hear. Does that sound right?
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Re: The stereo in my 2008 Silverado has very low
If it has a premium sound system some of them have a small amplifier for the over all system and the rear out put may have lost signal out put power.If it does not have an amplifier then I would replace the head unit(deck)with a brand that you like so you have total control,and no that does not sound right.Hope this helps
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use a test light and a battery. the black is ground, orange is constant and yellow is your turn on and off (ignition). then take a 9volt battery to check your speaker wires. front should be green and light green and gray and light gray. double check it has ben a while, rear is blue and light blue, a yellow and brown. you do not need any other wires in the harness unless you are using a power antenna or amp which you can use the yellow wire for ignition. double check with test light and 9volt battery. the 9volt battery will make the speaker pop noise, you then know you have a speaker when it makes that noise.
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Could be worn volume-control (potentiometer), dust/oxidizing on wiper-track of same control.
Buy contact-cleaner spray,such as Servisol, McKenic, Kontakt or similar.
If linear slider-type volume, attach tubular nozzle/guide thingy to spray head, squirt cleaner into slot while zooming back & forth (stereo OFF).
This scrubs the contacted surface while cleaning.
If rotary type, remove stereo, open cover, locate volume control, squirt into control while dialling up and down.
Allow a few minutes to evaporate (quick dry spray is best).
Car Radio Battery Constant 12v+ Wire: Green/Yellow Car Radio Accessory Switched 12v+ Wire: Yellow/Black Car Radio Ground Wire: Red or Black Car Radio Illumination Wire: Blue/Red Car Stereo Dimmer Wire: N/A Car Stereo Antenna Trigger Wire: N/A Car Stereo Amp Trigger Wire: N/A Car Stereo Amplifier Location: N/A Car Audio Front Speakers Size: N/A Car Audio Front Speakers Location: N/A Left Front Speaker Positive Wire (+): Orange/Green Left Front Speaker Negative Wire (-): Black/White Right Front Speaker Positive Wire (+): White/Green Right Front Speaker Negative Wire (-): Black/White Car Audio Rear Speakers Size: N/A Car Audio Rear Speakers Location: N/A Left Rear Speaker Positive Wire (+): Pink/Green Left Rear Speaker Negative Wire (-): Pink/Blue Right Rear Speaker Positive Wire (+): Pink/Blue Right Rear Speaker Negative Wire (-): Green/Orange
You can do it, but you'll need to use one of the outputs from the stereo, i.e. right rear/left rear. Disconnect the exsisting wiring to the sub. You'll need to run the two output wires from the stereo straight to the sub.