GMC Repair: 2003 gmc yukon locks, gmc yukon, fuse block

Question
my rear window and door locks are not working but my front door locks work.

Answer
Hi
I have run into this NUMEROUS times.
MOST times it is the left inside fuse block at fault. The lock and window power feeds through this particular box, and when an internal fault exists in this box, these are some of the symptoms.
I would though, go and have it professionally diagnosed first to avoid spending on un-needed parts.
I Hope this helps
PAwl