trailer brake problem

[jimdiddy]

i have a 02 duramax with a prodigy brake controller. when i hit the brake pedal my trailer brakes dont work but when i push the button on the controller they work fine anybody know what i need to fix

 

[crash2]

i have a 02 duramax with a prodigy brake controller. when i hit the brake pedal my trailer brakes dont work but when i push the button on the controller they work fine anybody know what i need to fix

Check your brake switch input...

 

[jimdiddy]

ok thanks