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Audio Systems/2002 chevy avalanche factory radio replacement


eric wrote at 2006-07-05 14:33:09
i put a radio and amplifiers into my 02 avalanche z71 and you need to turn on the factory amp. on one of the harness' there is the power wire. run a wire from the remote wire on headunit and hook into the amp wire on the factory harness.

Mazter_Jedi wrote at 2008-02-25 17:50:05
On the bottom plug of the factory amp, the back row of pins facing the hood, the 5th pin down is an orange wire (in my truck anyway).  I simply probed all the wires with a wire I connected to the amp on wire from my Sony HU.  The amp kicked on, so I ran a permanent wire and connected my amp and sub as well.  All systems go!

johnpequot wrote at 2010-10-24 23:10:49
I ran into this same problem today and did not find a solid answer so I figured Id post so when someone in the future hits this issue this can provide help.  I was installing a Sony replacement radio.  This was my 2nd radio the 1st a pioneer was installed by the former circuit city.  That radio died.  How hard could it be?  First I have to comment how sloppy circuit city was.  Anyway I wired it all up and NO SOUND.  I banged my head for hours.  NOTE that I had onstar in my 2002 which is useless since they discontinued the analog version.  Bottom line is that the GM AMP needed a lead to go hot from the sony.  One mention was of a pink wire and the only pink wire I found was from the onstar harness.  So I connected the AMP wire from the SONY radio to the blue/white radio wire from the onstar adapter that was in there (the other side was the pink) and WALLA!  

BFord wrote at 2011-08-01 19:47:12
Ok.. I had the same problem with my 2002 Avalanche.  As stated before the signal on the ONSTAR is useless now unless you have upgraded.  If you will take the pink wire from the ONSTAR harness and splice it into the blue wire or blue/white wire on your radio/harness then you will have it.  Mine works like a dream!  

Richard wrote at 2011-11-11 23:24:17
I have a 2002 chevy avalanche z-71. My factory radio quit working and I replaced it with a pioneer am/fm cd player. There were 2 plug ins on the factory radio. I bought the wiring connector, but was left with the smaller plug in not plugged into anything. Everything worked except, (NO SOUND). The smaller plug in that was'nt plugged into anything has a pink wire. I spliced into the pink wire and connected it to the blue wire coming from the new radio (pioneer). Wallah! It worked and now it works perfect. Sure was a relief to not have to run all new wire.  

john wrote at 2013-09-23 14:44:48
hi,Joe part of answer is right the amp is behind glove box I am paying someone to find solution today something about a pink wire from amp connected to remote wire from new head unit will get back with specific answer

rock on wrote at 2013-12-22 20:44:35
02 Avalanche Z66. No On star. The lower plug on amp, orange wire to amp out (Blue white on Sony Xplode) worked. You guys ROCK!

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Victor Madariaga


General car Radio, Amps, Crossovers, In Dash TV/DVD, Head units, Flip Down Displays/Combos


15 total years in consumer electronics repair 5 in home electronics Tv, stereo, camcorders 7 in Pro audio (JBL & Peavey service center)latest 3 in Car electronics (Factory Radio, Mobile Multimedia , High Power Amplification)

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