Where is transfer case vac switch?

Question

Per earlier post where I reported ATF fluid in the vacuum resevoir:

Went out this morning to pull/check the transfer case vac switch...and can't find one!

This is a 233-C NP unit. I see the big electrical connector for the electronic motor, and a smaller electrical connection on the rear output shaft of the unit...and that's it.

Now I have NOT pulled the transfer case...so if the vac switch is on top, I would not be able to see it.

Can someone confirm that this unit does indeed have a vacuum switch, and its location?

Thanks for the directions.

Gary

95 Blazer

Mike Levy · Accepted Answer

That's a part-time t-case, so it IS there.  Look on the front near thefront driveshaft yoke.  Should be there, maybe to the passenger's sideand up some from it.

TranSurgeon · Answer

follow the triple vacuum hoses

burntkat IS AT comcast.net · Answer

This being an electric-shift tcase, perhaps there isn't one?

burntkat IS AT comcast.net · Answer

Maybe the indaction and actuation of the front axle is done via the samecircuit that controls the tcase shift motor?Sorry- not familiar with it.. but that's the way I'd design it.

shiden_Kai · Answer

"burntkat IS AT " wroteIf the vehicle is a 95 Blazer, it still uses vacuum to actuate the frontdifferential.  It can have an electronically shifted t/case, but it usesa vacuum switch on the t/case to actuate the front diff.Ian

TranSurgeon · Answer

like I said earlier.'Follow the triple vacuum lines'..............

shiden_Kai · Answer

"TranSurgeon"  wroteYes...I don't think anyone is listening, unfortunately.Ian

Mike Levy · Answer

My 94 had the same T-case as he has, so does my 2000.  It's there,right where I described it to be, I think.  It may be in a littledifferent place but it IS there...

burntkat IS AT comcast.net · Answer

alrighty.. thanks for the clarification.Guess this explains why I don't design 'em, eh?I HATE vacuum systems.

Curmudgeon · Answer

Just because I asked for help doesn't mean I'm stupid!If I could find or SEE vacuum lines running into the T-case, I wouldn't haveasked where the switch was!!I was listening intently...unfortunately Transurgeon wasn't.

Where is transfer case vac switch?

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