power windows will not work

"Jeff May

@jeff5may


Rep: 605




3


1"

"Hi @myersw835

Couldn’t find the wiring diagram for a 1989 Blazer, but here’s an image showing the wiring for the doors locks and windows from a 1988 wiring diagram found here. Hopefully the 1989 wiring is the same as the 1988

It doesn’t show any fuses as such but circuit breakers. It would seem strange that neither would have power to them as the door lock circuit should be powered all the time and the windows would be only when the ignition key was operated i.e. two distinct power feeds.

You may have to trace the wiring back from the two circuit breakers to see if there is a common point.

(click on image to enlarge for better viewing).

Note: I checked the wiring diagram for the 1991 model and it shows the wiring for a 2-door and 4 door model for the door locks whereas the 1988 wiring diagram is only for a 2-door model and they are the same, but the 1991 diagrams don’t show the power windows wiring

Hopefully this is of some help."