I am doing a stero in a 2001 silverado with a 6.6l disel and there are 3 wires on the back of the factory stero the after market stero only have one will i need to wire the other 2 in

Check all fuses

$ , and AC? and what is all white.
first off what are you doing, we dont know,
1: factory 01 radio for 01 swap?
2 factory 01 for 2010 swap factory?
3: after market to stock 01 harness?
but if #3 , which i suspect, then this is in the FSM read that.
or login to alldata.com
or go to walfart or any store that sells this (auto) and get
the factory harness kit, for your car, this has a real factory
connector on one end and wires to your new aftermarket radio.
this is best, and far better than hacking up any car harness.
(reSale-ablity)

Most likely the red one. black is ground yellow is memory.

probably not unless you get a unit that is designed to replace the faulty part as the factory fitted unit has the wiring built in for the steering controls.

it has 2 b geting power 2 the starter soliond check power line 2 the starter 4 a bare spot hiting another wire it hase 2 b the wires going 2 the starter someware disels run hot and melt plastic coating if 2 close

if you havent taken the factory stereo out of the vehicle yet, if were you i would go to an auto store and buy wiring harness that plugs into your factory harness, that gives you all the colors to match up with your aftermarket... that way nothing gets cut on or messed up... and with the electical stuff linked to the stereo system, trust me you dont want a headache like that... a harness kit only cost like 15 bucks, plus if you ever wanted to get rid of the vehicle you could take your aftermarket stereo out, and plug the factory one right back in... hope this helps

if you take factory radio you need a steering volume control module to work with it have to get one install by a qualifier stero technician

goto www.the12volt.com and hit the download section. has all the wires in there for ya.But your best bet is to buy a wiring kit. there about 8 buck at walmart or auto zone and with that you dont have to cut the factory wires. It always good to leave the factory wires in tact in case you sell the car then you can put the factory radio back in.

you have to get the cable that conects your factory deck harness to the aftermarket deck, and that will allow you to use your factory speakers and amp, the wire harness is availiable at canadian tire or any stereo shop

Add a ground wire sounds like a bad ground