my brake lights stay on.
i have replaced thebrake switch 2 times then i replaced the brake assembly and switch.each time thereplacements seem to work for a couple of days. my van is a 2009 gmc savanah box van
See GM dealer for adjustments, inspections, etc, that's what they do.
I have read about adjusting these switches while researching taillight issues on c/k 1500 as well as brake lights the van might be same.
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