On my 98 Tahoe I had both of my rear light boards (thing the bulbs go into) go out at the same time. Easy replacement. Might check them the cost was only 24.95 (parts).
Bad ground
The multifunction switch inside the steering column is bad.
The 2004 Chevrolet Tahoe has 61.3 in. of rear hip room.
The 2015 Chevrolet Tahoe has 39.0 in. of rear leg room.
The 2010 Chevrolet Tahoe has 60.6 in. of rear hip room.
The 2006 Chevrolet Tahoe has 39.4 in. of rear head room.
The 2009 Chevrolet Tahoe has 39.0 in. of rear leg room.
The 2001 Chevrolet Tahoe has 38.6 in. of rear leg room.
The 2008 Chevrolet Tahoe has 39.2 in. of rear head room.
The 2012 Chevrolet Tahoe has 65.2 in. of rear shoulder room.
The 2001 Chevrolet Tahoe has 65.1 in. of rear shoulder room.
The 2013 Chevrolet Tahoe has 39.2 in. of rear head room.