Steering Wheel Control Disaster! Help!

[FALC0NDRIVER]

I NEED HELP!

 

I found some great instructions on various chevy forums about adding steering wheel controls to my 06 Silverado LS Crew Cab. And I followed all of them:

 

Got a new steering wheel (used off ebay)

Got a new clockspring and harness (part# 26101829 new off ebay)

Installed everything

Had 1 spare neon green 2 wire plug

Took my truck to a dealer to have them flash it with 2 VCI codes to unlock controls and DIC

When they did, they claim my BCM and instrument cluster were "fried / dead"

Now they want $1100 to replace both parts, as my truck is dead

 

What went wrong?

Did I use the wrong harness?

Did I cross a plug? I don't think I did. It seemed like each plug would only go in its individual place.

Did they screw up flashing the truck?

If they replace the parts, will the controls cause them to short out again?

Should I just put the original harness back in and abandon this project?

 

Please Help before I pay these guys!!