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Pioneer Head Unit- Powers up but no sound?


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well i hooking up a deck in my friends 2003 impala, deck is a pioneer 4900. Its a flip out deck and when i wire everything up it powers up but no sounds.......Any ideas what it could be? i have tried a few things:

Deck WORKS FOR SURE it was just taken out of a hummer

fuse-all good none blown or anything

speakers wires- they are all connected right to their appropriate wire

plugged in the stock radio and it works fine all the speakers sounds good

hooked the deck up and ran a small loose speaker and it WORKS! plays music thru that ONE, but the vehicle ones it dont WTF

Any Ideas what it could be?

Any help would be great. Thanks!

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did you bypass the factory amp? if it has one.

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Yeah. im pretty sure they dont warranty retarded people.

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i think my lil bro hooked up a deck in an impala and it had a factory amp for the speakers.

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dude i think those truck have a factory amp that goes into some what of a prtect mode if it senses like a stronger current or more power like from and after market head unit it happend to me before on a yukon install that i did

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well i hooking up a deck in my friends 2003 impala, deck is a pioneer 4900. Its a flip out deck and when i wire everything up it powers up but no sounds.......Any ideas what it could be? i have tried a few things:

Deck WORKS FOR SURE it was just taken out of a hummer

fuse-all good none blown or anything

speakers wires- they are all connected right to their appropriate wire

plugged in the stock radio and it works fine all the speakers sounds good

hooked the deck up and ran a small loose speaker and it WORKS! plays music thru that ONE, but the vehicle ones it dont WTF

Any Ideas what it could be?

Any help would be great. Thanks!

You said its an Impala, does it have any premium sound such as Bose, This would cause a problem if you care hooking up your radio.

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i dont think it has one....ive hooked up decks before in this and they worked fine i dont know why this one is acting up...

theres a main plug and then theres a smaller plug that we didnt connect.. but he said the harness adapter only came with that one plug, im thinking that other plug might need to be connected but theres nuthing to plug into it.

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dude i think those trucks...

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He has NO idea and may have a touch of autism to be honest.

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I think you will need a special wire harness for that car so the door chimes and stuff will cont. to work.

Alpine CDA-9847 HU

F Highs 2x Infinity Kappa 60.9CS Powered by Eclipse EA4200 Glass door panels

R Highs Infinity Ref. 9622i powered by HU

3x RF Punch HX2 RFD2210 Powered by MTX Thunder 81000D

Box Vol. 3.259 before displacement, Tuned 36.6, Port area 54"

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it has just regular sound system nothing special, thats what i was thinking too but no amp for the stock system

yeah it DOES have that little bell thing tho and thats hooked up right.

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