Working on an 02 Avalanche. An aftermarket stereo was installed in the vehicle. She doesn't like it anymore and wants me to put a factory unit back in so went to pick n pull and bought one. Unit works fine, I plugged it into my 97 yukon. The in dash wiring on the Avalanche is intact, whoever installed the unit however cut most of the wires going to the amp behind the glove box. I went to the dealership who printed me out 75 pages of connectors and wiring on the various radios that came in the vehicle. I found the one that matches c-1 and c-2 in the dash for the radio but the ones for the amp are all wrong. Looking at the ones they gave me some of the speaker inputs and power inputs are swapped so if I hook it up wrong I could potentially fry something. I will type in the connector pin positions and wire colors in the hopes somebody has a diagram for this vehicle. Some help would be greatly appreciated as I have spent hours searching and found nothing coming close to this wire-up, including the dealership.
a1-brn
a2-brn
a3-tan
a4-dk grn
a5-empty
a6-empty
a7-empty
a8-empty
a9-brn
a10-yel
a11-tan
a12-gry
b1-dk blue
b2-blk
b3-lt grn
b4-lt grn
b5-empty
b6-empty
b7-ppl
b8-pnk
b9-dk blue
b10-lt blue
b11-lt grn
b12-dk grn
a1-brn
a2-brn
a3-tan
a4-dk grn
a5-empty
a6-empty
a7-empty
a8-empty
a9-brn
a10-yel
a11-tan
a12-gry
b1-dk blue
b2-blk
b3-lt grn
b4-lt grn
b5-empty
b6-empty
b7-ppl
b8-pnk
b9-dk blue
b10-lt blue
b11-lt grn
b12-dk grn