4x4

need help I am getting my blazer ready for winter and I was checking out the 4x4 and when I push the toggle button some times I hear the solenoid on the transfer case engage and some times not .when it dose the light on the button will come on for a second then go back off while looking for electrical problems I seen where my loving dog chewed the wires off my front axle solenoid so I replaced bad wirers but still no luck .it also seems to try to lock in easier in neutral but still will not stay engaged . My blazer is a 94 s-10 4.3 w 4x4 I could use any and all help thanks

Check the eletronic shifter [encoder]. Also something I seen on here for a temp fix or check. Unplug your negative side battery for 30 mins. Then hook it back up and check. resets puter. I guess your encoder is going bad or is bad.

ok thanks how do you check the electric shift encoder?

10 mins is all you need to do the battery off thing.
i know all to well :/
checking the encoder has been coverd all over the forums...very common topic..under almost all 4x4 problem posts.........good luck.

Thanks for the info I unhooked my neg .bat. cable for a few minute and that didn’t do any thing thin I did the positive cable and it worked a couple of times till I backed it out of the garage now it is back to only trying to work in neutral again . I read the other post and if the encoder is the little motor on passenger side then I can hear it engaging when I can get the light to work

Dealer cost for a encoder with 1 year warranty $400. Junk yards $100-$150. Ebay $100. Sounds like you need one.

if you decide that you need a decoder mod. I have 2 i would be happy to sell you one for less than the junkyards. I know how hard it is to find a parts truck. let me know.

Dealer cost for a encoder with 1 year warranty $400. Junk yards $100-$150. Ebay $100. Sounds like you need one.

Tonyfdny do you still have the encoder motors? I think that I may need one I am having the same problems as countyboy mine is also a 94 4.3 with the vortech motor, it will not go into 4HI or 4Lo unless I disconnect the battery, leave it for a while and reconnect but it only stays on for a little while.

The part that I have is the encoder module. This is the computer part that is behind the dashboard. I still have 2 extra let me know if you need this part and ill give you my e-mail address and we can talk privately

The encoder motor is on the transfer case . the part under the dash is call TCCM Transfer case control module

Which one is it? Can anyone clear this up?

The encoder motor is on the transfer case . the part under the dash is call TCCM Transfer case control module


Anyone? TonyFDNY? Fireplug? Hello?

under the driver side lower panel is the ALDL test connector. there should be a black plastic connector with 2 rows of 6 spots the top right is pin a then going to the left is pins b,c,d,e,f, on the lower 2nd row starting on the right is pins m then going to the left is pins l,k,j,h,g
What i want you to do is take a jumper wire from pins j and a and turn the ign key to run(do not start the truck) and look at the 4wd lights will flash a code get that code so I can help pin point the problem
also I want you to just turn the ign key to the run position with out the jumper wire on pins j and a and tell me what the 4wd lights do. I have the trouble tree for that system with me right now

ok i will get to it tonight. Thanks for the help

under the driver side lower panel is the ALDL test connector. there should be a black plastic connector with 2 rows of 6 spots the top right is pin a then going to the left is pins b,c,d,e,f, on the lower 2nd row starting on the right is pins m then going to the left is pins l,k,j,h,g
What i want you to do is take a jumper wire from pins j and a and turn the ign key to run(do not start the truck) and look at the 4wd lights will flash a code get that code so I can help pin point the problem
also I want you to just turn the ign key to the run position with out the jumper wire on pins j and a and tell me what the 4wd lights do. I have the trouble tree for that system with me right now

Ok here is what I got.

With the jumperwire plugged in A and J with the key turned on the run position I got 3 flashed on the 4x4 switch and that was both lights. With the wire out of the connector and the key turned to the run position I got nothing.

Let me know what you find out

Thanks
Dave

pm me your email address so i can send you the trouble tree to use and the wiring charts

PM sent

I sent you 6 emails with all the wiring and trouble shooting charts for you truck but they ALL just got bounced back

I will PM you with all of my e-mails

Ok here is what I got.

With the jumperwire plugged in A and J with the key turned on the run position I got 3 flashed on the 4x4 switch and that was both lights. With the wire out of the connector and the key turned to the run position I got nothing.

Let me know what you find out

Thanks
Dave

Looking for Fireplug I am still waiting on an answer from him anything? My 4WD is still not working

i sent you a email hope it helps