Your owners manual should show you where the fuses are located. If you don't have an owners manual, you can go to
my.gm.com, type in your year--make--model and hopefully read your owners manual for free.
Do the brake lamps work ok?
I found these fuses, not only check fuses, check for voltage on fuse circuit, use a test light. Some fuses are hot all the time, some go hot with the key on.
Any codes for the cruise system?
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