Ed133

Hey guys, new here and looking for some help. I have a 2006 Silverado 5.3L 4wd crew cab that I've been battling with. It started with the check 4wd dash message and the truck starting in 4 low at random times. Sometimes it lets me put it in 2wd like normal and sometimes I have to cut the truck off and restart it several times. When it does work the buttons work like they're supposed to then suddenly I'll be in 4wd and no lights will be lit on the dash switch.

I started googling and the first issue I found to try was the transfer case control module under the dash. Although expensive I have a friend and got one pretty cheap and swapped them. Easy job but didn't fix anything. So I did some more research and found a very common problem was the ground wires losing ground on the frame because of some coating. Most people sanded the points on the frame to bare metal and the 4wd worked correctly again. Well, mine didn't..... so that leaves the dash switch itself. Only thing left that it could be since the transfer case motor and actuator work fine when the switches work. So I just replaced the entire switch and started the truck. It lit up like it's supposed to at start up but then I had nothing. No lights are lit and nothing happens when I push the buttons for 4 high, 4 low or anything.

I'm no mechanic but I'm trying to save all I can to keep this old hunting truck going. Does anyone have any experience with this and could give me a direction to go. I'm dumbfounded to say the least!!!!!!

Thanks,

Ned

oilcanhenry

Likely your TCCM Transfer Case Control Module might have gone south. Here is a link to Amazon, but you can buy one all manner of places:

Ed133

That's new, just replaced a couple weeks ago. Before installing new switches I at least had an amber light beside on of the 4wd options even if it was 4 low. After installing new switches I get no amber light beside any button and pushing them gets nothing. Put old switches back in and still no amber light beside any button.

oilcanhenry

Is it possible that your TC shift motor isnt working? Cay you hear any noise if its working?

Hewlett

have you ever figured out your problem? I have the same one now and need help

mountainmanjoe

@Hewlett Ned hasn't visited the forum in 5 years and probably won't reply. Instead of reviving old topics, please post a new thread with your vehicle details , symptoms, and the troubleshooting you tried. You should also try oilcanhenry's suggestion. Thanks.