[ItsFrontier]

Hi, So i have a 1995 s10 with the 4.3 in it. Currently, it's in 4 Hi. Although, the truck's display (near shifter) says its in 2HI. When i go to put it into 4Hi, it goes into neutral. and than once i put it into neutral it goes into 4Low. Lastly, once i pull it to 4Low, it stays in 4 low. Basically, i cannot get it out of 4. Even if i shift all the way back 2Hi it will stay in 4Hi and do the same thing as discussed above. Any help would be greatly appreciated. If it makes a different its got the 5 Speed in it

 

[oldeerslayer]

When you say you "pull it" makes me think it's a manual, not electric shift. Sounds like something in the linkage is messed up. Gonna have to get under it and look while some one is in the cab moving the handle. With it not running.
Something is either worn or loose or both.

 

[ItsFrontier]

When you say you "pull it" makes me think it's a manual, not electric shift. Sounds like something in the linkage is messed up. Gonna have to get under it and look while some one is in the cab moving the handle. With it not running.
Something is either worn or loose or both.

See, i did that and everything seemed to be moving correctly. It all started when i changed my front drive shaft. It was cheaper to buy a new driveshaft than replaced the worn parts. Yes, its manual linkage.

 

[GEOD998]

I know nothing about the manual transfer case,but, if it started after changing the driveshaft,it seems likely than linkage was bent or somehow altered during the shaft work-no? which takes us back to what ODS eluded to-.did you change the driveshaft youself? I'm assuming that you checked that it is indeed in the modes the display says its in...not just the display reading incorrectly?

 

[oldeerslayer]

As GEOD says if it started after a repair, then something got hit, disconnected, bent???

 

[ItsFrontier]

So, a little update for anyone trying to help me out. I've gone under and found out the transfer case linkage is moving correctly and should be selecting correctly. Although, it does not. I am leaning towards vacuum leaks of some sort. I know some vehicles also have a switch that notifies the transfer case to shift in and out of 4. Unsure if the 95 S10 has this or not.

 

[oldeerslayer]

The vacuum switch is to activate the front axle into 4wd.
What you are describing is either linkage or your TC is messed up internally.
If it's in 4 Lo when the lever is in neutral it's not electrical or vacuum.

 

[GEOD998]

IIRC-my 95 blazer has a transfer case switch which sends vacuum to the diaphragm under the battery tray to engage the front axle and an actuator motor on the transfer case to shift it thru 2hi-4hi-4lo. seem to remember they do warn about clocking the actuator motor when it not installed? none the less this is all on an automatic tranny and nothing but buttons to push -so probably different than you are describing

 

[GEOD998]

this what I changed on mine a while back.Lots of good info on this site about the whole shabang