2001 Silverado Z-71 Multi Function Switch / BCM Problem
 

HELP! http://www.gmtruckclub.com/forum/ima...s/sign0144.gif

I have a 2001 Silverado Z-71. Several years ago my headlights started flickering and I found the trouble in a broken wire on the Multi Function Switch wiring harness where it plugs to the MFS. I repaired the broken wire and it's worked great until last week. The headlights went out again so again I looked at the MFS and found that the wire I repaired plus one more next to it were burned, slightly melting the wiring harness connector. Splicing new wires didn't work so I bought and installed a new MFS which came with a new wiring harness. Still no headlights and now I have no interior lights, no under hood light, no cargo light, the key remote wont work the door locks AND the truck wont start!http://www.gmtruckclub.com/forum/ima...ys/grrrrrr.gif

I have an MT2500 scan tool (Snapon brand) that will communicate with all vehicle functions except the Body Control Module. I think that I may need to reprogram the BCM or buy a new one. I retreived one DTS code, P1626 Vehicle Theft Deterent, so the truck is in lock down (turning off the injectors).http://www.gmtruckclub.com/forum/ima...ileys/gasp.gif

Has anyone had this problem? My Chevy dealer is stumped (which is usual for them) and I don't want to tow my truck to them so they can keep it for a month a charge me $2000.http://www.gmtruckclub.com/forum/ima...ghting0019.gif

im not sure how to help with your problem. but could you direct me to where the mfs is i think im having the same problem.

It's attached to the turn signal lever, mounted on the steering column.

How hard are they to get to? i priced a new one its $189. does that sound right? The old problem of having no brakelights fixed itself and they started working for a couple days then out of nowhere i have no passenger tail light/turn signal/brake light on the rear and the cab I havent checked to see if my reverse light works on the passenger side yet. Everything on the driver side works fine.??