I had the battery drain issue with my 2004 Silverado Z71. After troubleshooting the problem for several days I came across this forum and unplugged my cluster and sure enough my drain went away. So I sent it off to automotivecircuitsolutions.com and for around $100 i got it repair and upgraded to blue leds. Its been a week now and the battery never died. They have a 24 hour turnaround time and it came with a lifetime warranty, I highly recommend them.