03 trailblazer rear door switches?

Hello all. Ive had a Viper 350HV and the GM-DLBP bypass module installed for almost seven months now. Last weekend, I changed the arming from active to passive. The other night, I closed the drivers door and the LED started blinking fast like it normally does. I forgot something on the back seat and I opened the back door but the LED didnt go out. The system armed. I rolled down the rear window, closed the door, armed the system, and opened the door....the alarm didnt go off.....I tried the other doors, the rears dont trigger the alarm

Are there independant door switches that need to be wired into the 350 (as opposed to the bypass module)?

Thanks!