The 2002 Chevy Express 2500 Van Kick Panel Fuse Block Diagram below is for you. The 50 amp BATTERY maxi fuse supplies power to the STOP fuse for the brake light circuit. It also supplies power to the other circuits shown. If these other circuits have power and the STOP fuse does not then there is an open circuit inside the fuse panel itself.
Download : 2002 Chevy Express 2500 Van Kick Panel Fuse Block Diagram
I do not have a diagram of the connector itself. Power comes into the switch on the Orange wire at terminal E. Power comes out of the switch on the White wire at terminal F.
There are multiple circuits feeding into the brake switch. The ones for the shift interlock are powered with the key on. The one for the brake lights should have power all the time. If there is no power at the orange wire and there is no power at the STOP fuse then you have a power supply problem, not a relay problem.
Test again for power at the STOP fuse and at the CIG LTR fuse. If the Stop fuse does not have power and the Cig Ltr fuse does have power then your problem is in behind the fuse panel.
Download : 2002 Chevy Express 2500 Van Kick Panel Fuse Block Diagram
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