How do you tell what brake system my truck has. It’s a 1986 Suburban 3/4t 454 with 400 trans. The SPID doesn’t list JB7 on there. Sites like napa or autozone say with our without JB7 for my truck. Maybe a visual inspection?
I know a super old thread. My suburban has power door locks but no power windows. Do you think the wiring will be there for the power windows already or will new wires needs to be ran? This is for a 1986 suburban