Hey i have a 1993 Chevy S10 4 door blazer with the push button 4wd and just had the transmission gone through and the transfer case also new seals fluid and yea got it back and the 4x4 was workin perfect took it for some light 4 wheeling and bout 2 days after that went on the beach and it clicked in and then stoped working, but when i put it in neutral it will go right into 4 Lo but wont go into 4 Hi and when its in any gear other than neutral it wont even do anything but when i unhook the battery and hook it back up the 4wd will work perfect again for however long it wants to please help me thanks. if someone could reply to my email that would be awesome its cardud13@yahoo.com but replying on this would be fine thanks for your time. oh and im not blowing any fuses or throwing any codes.

 

*Moved to a new thread in the 1st Gen Tech section* - The thread you posted in is for linking to helpful threads and not for asking for technical help. As such, I have moved your post to a new thread in the appropriate section.

Threads about problems with 4wd are VERY plentiful around here. Check out the Tech Article (DIY) section for some reading material on the most common problems with the 4wd systems found in these trucks. To give you some direction, your problem is likely a faulty encoder, but diagnose the issue before replacing anything.

 

when i try and put it in 4 hi or 4 lo in any gear but neutral it wont do a thing no lights or nothing but sometimes it will work just perfect and then sometimes even when i put it in neutral i can push either button and it wont do a thing, all vacuum is good the actuator for the hubs under the battery case is good, i recently changed the vacuum switch on the front diff and the vacuum switch on the top of the transfer case, all the fuses are good, and i changed the electronic push button on the dash, dose anyone know if this would be either the TCCM or the Encoder moter on the transfer case. any input would help thanks.

 

sounds like your in the same boat I am, if you figure it out please let me know what you did!

 

Are you sure naybe one (or more) of the vacuum lines is not loose? Electrical connections good and tight? Also check for a bad wire.

 

well I did some more searching and apparently after the computer reads too many errors it goes into (safe mode) and will only work when in neutral. I'm thinking about setting this thing on fire and walking away....

 

all the vacuum lines are good connections are good

 

have the 1993 s10 blazer with the electronic push button 4x4 i put a new encoder motor (4x4 motor) and now it shifts into 4 high but wont shift out of 4 high it will unlock the front hubs but won't take it out of 4 high and when i push the 4 low button in neutral and it just flashes for about 30 seconds and then pops into 4 high again so idk what the problem is and its a brand new motor so yea please help haha.

 

Did you find and clean the electrical connections at the TCCM (under the dash near the center)?

Did you check for codes by grounding terminal J in the ALDL under the driver side dash (check troublecodes.net for the ALDL pinout and the Tech Article section for the NV233 diagnostic thread).

 

ok thanks man i will try that tomorrow i also cleaned the connections on the plug for the encoder motor with contact cleaner, everything else is new, the new things i put on are: encoder motor, vacuum actuator under the battery, vacuum switch on the transfer case, and 4x4 switch on the front differential. I also looked at the vacuum lines and haven't found any leaks. thanks for the quick reply, this forum really helps allot its a great thing.