applying pressure to the brake pedal
Where is the brake light switch for 2003 hd Chevy truck As far as I know, all brake switches are on the top of the brake pedal arm.
3rd brake light or rear brake lights?
The brake light switch relay for your 1997 Chevy truck is located beneath the drivers side dashboard. The brake light relay switch will be above the brake pedal.
on the brake pedal
The 1989 Chevy truck did not come with a third brake light as a standard feature. Instead, it typically had a cargo light above the truck bed. However, some later models and trims may have included a third brake light, but it was not common for that year.
check you brake fluid level.
all brake light switches are connected to the brake pedal --- any car or truck or van
it could be the brake light switch that usually contacts the break pedal when you depress the brake pedal. check that out first.
need to make sure power is getting to the brake light switch and abs unit
There is a short in the wiring or a corroded brake light receptacle.
bad brake light switch
your brake fluid is low