where is TCCM located on 1999 silverado 5.3 Lt cab

It is located under dash ,driver,s fire wall,

This is where a TCCM is located on a 2000 Chevy Truck. Take out the left side switch and vent cluster and you can see it and get at it. You have to turn it sideways to get it past everything.

Better photo.

Which fuse goes to the TCCM and where is located?

The atc fuse runs the tccm and the transfer case encoder motor. it is located in the fuse panel under the hood. i am having problems with my tccm and it keeps throwing the "Service 4WD" light in the dash. i pull the atc fuse and the 4x4 fuse and it turns the "Sevice 4WD"

I know this is an old thread but I have the same problem only worse. When I get to this spot in the photo, there is not TCCM in the slot. It has been moved. The truck had an old cell phone dock and hands free system installed so I suspect it was moved when all of that went in. I have dug as deep into the dash as I can on my own and haven't found the unit. Any help here would be great

Sometimes it's located on the passenger side toe kick, right in front of the passenger side door.