dont have the audio, u wil have to find the factory amp and test !

this is the best i could provide!

Constant 12 volts	WIRE GAGE TO SMALL	CONNECT AT UNDERDASH FUSE BLOCK.
Ignition 12 volts	PINK	IGNITION SWITCH HARNESS
Starter	NO STARTER WIRE	SEE TECH ***
Dome Light	GRAY/BLACK (+)	AT BCM * C5 BROWN PIN E SEE TECH**
Trunk Pin Switch	PINK/BLACK (-)	AT BCM * C6 PINK PIN 15 SEE TECH**
Parking Lamp	GREY/BLACK (-)	AT MAIN SWITCH
Power Lock	DR PU, PASS GR/BLK	IN EACH DOOR DUE TO #203
Power Unlock	DR TAN,PASS TAN	MULTIPLEXING **

* BCM Located Below Steering Column Alt Dr Door Pin Is BROWN And Pass Door Pin Is BLACK/WHITE These Wires Are Located In The Doors Polarity Is Hard To Determin From Shop Manual.Drivers Rear L BLUE (-) Pass L GREEN/BLACK (-) At BCM Conn C6 Pins 14 and 15. ** Rear Doors And End Gate Can Be Cotroled From The BCM SEE TECH ** #203- See Reversal Rest at Ground Door Lock Diagram.

Tach Signal	WHITE	AT PCM * #241
Ignition #2	WHITE	IGNITION SWITCH HARNESS
Ignition #3	ORANGE	IGNITION SWITCH HARNESS
Accessory	BROWN	IGNITION SWITCH HARNESS
Neutral Safety	WHITE (-)	PCM CONN C3 PIN #13 *
Brake Light	WHITE (+)	AT SWITCH ABOVE BRAKE PEDAL
Reverse Light	LIGHT GREEN (+)	EITHER TAIL LT ASSY OR TRAILER CONN**
Rear Window Defrost	N/A

*PCM Located On The Drivers Side Of The Motor. Tach Wire Is In The BLUE Conn (C1) Closest To The Firewall,Pin #49. Also Found Back Of Cluster in 24 pin GREY Conn Pin # A12 ** Also Found At BCM In 6 Pin Black Connector #241- GM Passlock 2004 Interface Diagram ( Wire Colors Are WHITE And PINK ) Use WHITE (Pin 5) & PINK (Pin 6) Wires At Ignition Switch Cut WHITE wire.

Radio 12v  red/white  +  radio harness Radio Ground  black  -  radio harness Radio Ignition  (GMLAN Serial Data)     Radio Illumination  yellow (dimmer)  +  radio harness Factory Amp Turn-on  same as power antenna wire     Power Antenna  white  +  radio harness LF Speaker +/-  tan - gray  +,-  radio harness or amplifier Notes: If equipped, the amplifier is under the rear of the center console. At the amplifier, the left subwoofer wires are dk. blue/white (+) - lt. green/black (-). The right subwoofer wires are dk. green (+) - lt. blue/black (-). RF Speaker +/-  lt. green - dk. green  +,-  radio harness or amplifier LR Speaker +/-  brown - yellow  +,-  radio harness or amplifier RR Speaker +/-  dk. blue - lt. blue  +,-  radio harness or amplifier Interface Module: Category: Immobilizer Bypass Required: Yes Type: PASS-Key III+ Part #: 556UW Alternate Part1 #: DesignTech 20402 Alternate Part2 #: DesignTech 29402 Notes: Standard on all models. Smart Starter Kill Relays: Relay Type: Starter Relay Location: Engine compartment fusebox, Driver side Part #: 6404A

12volts	red/white (2A)	+	ignition harness
Notes: For high current 12V, use red/black (60A) and red/black (60A) at the fuse box, black 40 pin plug, pins F1 and E3, or go to the battery.
Ignition	pink	+	ign harn or BCM, lt. grn plg, pin 14
Notes: The BCM (Body Control Module) is to the left of the steering column.
Parking Lights+	brown (L), brown (R)	+	underhood fuse box, blk 30 pin plug
Parking Lights-	lt. blue	-	switch or BCM, natural plug, pin 8
Notes: The BCM (Body Control Module) is to the left of the steering column.
Headlight	white	-	switch or BCM, natural plug, pin 12
Notes: The BCM (Body Control Module) is to the left of the steering column.
Trunk/Hatch Release	pink (glass), gray (gate)	-	BCM, pink plug, pins 24 and 13
Notes: Meter these wires while opening the liftglass or liftgate from the handle on the rear liftgate. The BCM (Body Control Module) is to the left of the steering column. On vehicles with the power liftgate, use dk. green/white (-) at the switch in the overhead console.
Power Sliding Door	N/A
Speed Sense	yellow/black		ECM, black 73 pin plug, pin 57
Notes: The ECM (Engine Control Module) is in the front driver side of the engine compartment.
Wipers	gray	+	BCM, brown plug, pin 20
Notes: The BCM (Body Control Module) is to the left of the steering column.
LF Window up/dn	dk. blue - brown	A	DDM, black 6 pin plug, pins 3 and 1
Notes: The DDM (Driver Door Module) is in the driver door.
RF Window up/dn	dk. blue - brown	A	PDM, black 6 pin plug, pins 3 and 1
Notes: The PDM (Passenger Door Module) is in the passenger door.
LR Window up/dn	dk. blue - brown	A	LR window switch in door, pins E, H
RR Window up/dn	dk. blue - brown	A	RR window switch in door, pins E, H
Sun Roof open/close	motor part of module
Sun Roof Limit/close	N/A
Memory Seat 1	orange	+	switch or DDM, blk 26 pin plg, pin 5
Notes: Memory seat 1 is positive trigger thru a 2260 ohm resistor. Memory seat 2 is positive trigger thru a 4260 ohm resistor. The DDM (Driver Door Module) is in the driver door.
Memory Seat 2	same as memory seat 1 wire	+
Memory Seat 3	N/A	+

Thanks josh1979 i have no ideal where you find that but thanks

I just did one today with Bose for a Parrot 3100 Bluetooth

speakers were normal old chevy colors under the huge pocket in the center console that just pops up and slides out at the front. They were the lt. blue/ dark blue, yellow/brown, tan/grey, lt green/dark green at a huge harness connector that goes towards the amp. You can also find a pink thats a 12v acc(comes on/off with the radio on/off not ignition, but its not an amp turn on), you have a black ground and 3 constants that are all red/white. Funny part was that the tweeters are also caught on the front speaker wires and arent seperate, but passsively cross overed. The stock sub(s) are on the right side in a 4 pin connector. I dont know if its 2 subs or a dual voice coil, but they are red/green and white/red / white/green. We did it right and used relays to kill the subs when the Parrot kicked in so have fun