Q: All 4wd selector lights are on
I have checked the 4wd actuator vacuum and lines, they're all working (in good shape, no leaks in lines). They don't seem to be engaging though. My blazer's 4wd selector switch lights are on and neutral is red. I'm not sure if it's a problem with the selector or the encoder. I'm thinking it could also be a problem with the transfer case control module. I'm not entirely sure.
My car has 180000 miles.
My car has an automatic transmission.
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