When the key is off the brake lights work fine. once the car is turned on the brake lights no longer work. also cruise control quit working
The cruise and turn signal on a 2005 Chevy trailblazer are not on the same switch. My turn signals work my cruise control does not and but the brake lights worked up until 4 days ago. and had work from when it was new till then. My cruise control has not worked for over 5 years.
I would check the turn signal switch. The cruise and turn signal are on the same switch. The brake lights go through the switch before going to the brake lights. And the turn signals don't work with the ignition off.
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