Project: 1995 s10 SAS

[dball]

ECM is the PCM right? (Electronic Control Module) I believe a 93-95 doesnt use a TCCM. Runs through the PCM wich should be behind the glove box. Pull the glove box out and you should see it. I looked up the connector end views and it shows me 3 32pin connectors and 1 24pin connector. Hope this helps. Someone correct me if im wrong. What circuit exactly are you looking for?

[Baggey22]

I'm looking for the pin that sends a signal to my computer saying that my truck is in 4LO since I went from an electronic NP233 to a manual NP231. All I have to do is find that pin and ground it out and I'll be all set. But I can't find the PCM/TCCM. All I've found is what ChrisinVT said was my ECM which looks like the picture below AND my airbag module. If you know what pin I could try on THAT (picture below) to get my 4wd to shift properly that would help out immencely.

[t01blaze]

yeah, PCM = ECM, GM changed the name of the module at some point.

^^that looks like your engine computer to me(PCM/ECM ...whatever). And, as stated before, anything with YELLOW connectors is for the airbags.


look at the connectors very closely and see if you see a letter and number by the holes where the wires go in. The cavitys are usually marked for easy identification. If you can find a black and grey wire in cavity F8, then that is what youre looking for.

[dball]

Also if you have a DMM(digital multi meter) set it to ohms and plug one of the test leads into correct circuit at transfer case connector. Then run other test lead over all pins at PCM connector. be sure not to damage terminals with test lead tho. Just another idea that may help. Use a small peice of wire to not damge pins.

[dball]

Note that you should see <.5ohms when you find it. All other pins should read O.L. on the DMM

[Baggey22]

Quote: Originally Posted by t01blaze

yeah, PCM = ECM, GM changed the name of the module at some point.

^^that looks like your engine computer to me(PCM/ECM ...whatever). And, as stated before, anything with YELLOW connectors is for the airbags.


look at the connectors very closely and see if you see a letter and number by the holes where the wires go in. The cavitys are usually marked for easy identification. If you can find a black and grey wire in cavity F8, then that is what youre looking for.

So the black/gray wire doesn't have to be in cavity 1?
Now I'm looking for F8?

[dball]

This is the only connector info I can find for a 95. Should be the same as 93?? unless they swapped out harness and computer and everything..idk
If you have a 24 pin connector that looks like this, maybe pin 23 is it?
Sorry if this doesnt help at all

[Baggey22]

I just went outside and looked at the ECM. I found on the 8th cavity on the BACK side there was a gray wire with a black stripe. When I say back 8th I mean (if you're looking at the picture) the plug on the LEFT and counting 8 over from the left, and the row of wires on the back.
I grounded it out but my driveway isn't big enough for me to attempt to drive far enough for it to shift. I'll have to go out later this evening and try it. I'll let everyone know how it goes.

[dball]

Good luck hope it works! If not Ill try to bring home the GM service manual from work for a 93 and 95 if we have them.

[96superflow]

love the updated sig man.

[ChrisInVT]

Yeah, I don't think your truck has a separate PCM TCCM or whatever the crap it is that the newer trucks have to control the transmission. The PO might have swapped the transmission also. IIRC the 95 was the "Frankenstein" year where they were just changing over, so you might have somethings in common with the older trucks, and somethings in common with the newer ones.

[t01blaze]

Quote: Originally Posted by Baggey22

So the black/gray wire doesn't have to be in cavity 1?
Now I'm looking for F8?

F8 is on the ECM connector,

and cavity 1 would be on the TCCM connector.

[Baggey22]

Update: I went wheeling with my s10 today. But this was after spending all day taking out my transfer case only to find that the one I got from the guy in NH wouldn't work with my speed sensor so I had to put it ALL back together. After it was back together we went wheeling. It was pretty good until I got nose deep into a hole and THOUGHT I blew my head gasket, but really I just sucked up some water and blew white smoke for a little while. Then after a while of goofing around we went home. . . . or at least tried to. On the way home my transmission decided to take a shit and it was revving at like 5000 RPM to go 30mph. Which in turn made the motor overheat and the radiator to spring a leak. So I had to get towed home about half an hour ago white smoke and all.
Any ideas about the transmission? My buddy said maybe the torque converter. Cause it was fine and then all of a sudden it like slipped in and out of gear and wouldn't shift. Then while I was doing 30 it was slightly bucking. I couldn't stay at a constant speed.
I need help, I'm ready to set fire to this fvcking truck

[Tim99Zr2]

ouch, thats a shitty ass update, you been having bad luck with it..

weird it shit the bed all the sudden... i dunno?
might want to consider a 5 spd swap. i hate autos for that reason

[Gibson]

Quote: Originally Posted by Baggey22

I need help, I'm ready to set fire to this fvcking truck

dont do that, give it to me! i need a 4x4, need to drive over a civic or 12

[t01blaze]

Quote: Originally Posted by Tim99Zr2

ouch, thats a shitty ass update

that sucks.

i was hoping for an update on what fixed your problem of why you cant get it out of first in 4lo

[Baggey22]

Quote: Originally Posted by t01blaze

that sucks.

i was hoping for an update on what fixed your problem of why you cant get it out of first in 4lo

OH, yea that DID happened. I was in second and third all day on the trails. It was great!
So no one has any ideas about the transmission?
Could the transfer case being a little screwed up (driving without fluid a few weeks ago) have anything to do with it shifting funny?

[t01blaze]

Quote: Originally Posted by Baggey22

OH, yea that DID happened. I was in second and third all day on the trails. It was great!

what did happened? you grounded out the wire and it fixed it?

[t01blaze]

Quote: Originally Posted by Baggey22

On the way home my transmission decided to take a shit and it was revving at like 5000 RPM to go 30mph.

if you did ground the wire to change the shift pattern for 4lo, you did un-ground it for the ride home in 2hi right???

[Baggey22]

Yea, I grounded it and it shifted offroad. And yes, I did remember to unground it when ON road.

[Tim99Zr2]

nah, no fluid in the tcase shouldnt hurt it, mine is fine.

[Baggey22]

You don't have fluid in your case?

Also, I put some water in my radiator yesterday as a "trail fix" and by water, I mean muddy water from a puddle cause I was kinda desperate. Anyone know off hand how much NEW coolant I'm supposed to put in after I drain the shit I have in there now? Thanks

[t01blaze]

flush it good with the hose. It will probably take about 2 gallons or a little more. when you flush it with the garden hose, you will have clean water in the engine and heater core still that you wont get back out, so remember that becasue it will dilute your 50/50 mix a little.

[t01blaze]

Quote: Originally Posted by Baggey22

Yea, I grounded it and it shifted offroad.

Quote: Originally Posted by Baggey22

If you find that thread or tell me what wire it is I'll PayPal you $1.00

wheres that dollar??

[Baggey22]

Quote: Originally Posted by t01blaze

flush it good with the hose. It will probably take about 2 gallons or a little more. when you flush it with the garden hose, you will have clean water in the engine and heater core still that you wont get back out, so remember that becasue it will dilute your 50/50 mix a little.

Excellent, thanks.

Here's some pictures (there will be more later from other people's cameras) that are from my camera of yesterday.

Here's the convoy before we got on trail


Nick getting stuck


Me navigating my way out after winching Nick out


Me climbing up some rocks


Me burying the front end of my truck




Like I said that's just a few from today. Here's the rest of the album. http://s121.photobucket.com/albums/o...videre%206-27/
The ones where I'm being winched out and making LOTS of smoke is because I sucked a little bit of water into my intake. After a few minutes it went away.

[Baggey22]

Two things:
1. What? no one likes my pictures?

2. I need a new transmission, would one taken out of a 2004 Blazer work with my truck?

[DieselS10]

That hole is DEEP!

[Gibson]

Quote: Originally Posted by Baggey22

Two things:
1. What? no one likes my pictures?

2. I need a new transmission, would one taken out of a 2004 Blazer work with my truck?

1 gimme your truck

2 most likely

[Baggey22]

Yea, it was Diesel.
I could use more than "most likely" in terms of that 2004 transmission. Anyone else know?

[96superflow]

Answer 1. Awesome Pics!!!!!

Thought for 2. Not quite sure about it. a 2004 tranny will more than like be a 4l60e, and thats electronic shift. Im guessing that since your truck is all sorts of crazy that it will have a 700r4 the hydralic shifting trans. The only reason i suspect this is because a 93 balzer motor works in your truck and im pretty sure GM changed their tranny's in 96. I am pretty sure there are companies out there that make a standalone tranny computer... Hope this helps...

[t01blaze]

stand-alone trans computer will work. Just get another trans like the one you got, or rebuild your current trans. If it took 3 or more months to figure out what wire you needed for your 4wd low to shift properly, do you really want to start all over again with a whole electronic trans? Maybe it wouldnt be too bad though.

[Baggey22]

Quote: Originally Posted by 96superflow

Answer 1. Awesome Pics!!!!!

Thought for 2. Not quite sure about it. a 2004 tranny will more than like be a 4l60e, and thats electronic shift. Im guessing that since your truck is all sorts of crazy that it will have a 700r4 the hydralic shifting trans. The only reason i suspect this is because a 93 balzer motor works in your truck and im pretty sure GM changed their tranny's in 96. I am pretty sure there are companies out there that make a standalone tranny computer... Hope this helps...

I talked to a mechanic friend and he said that a 93 Blazer WOULD have the 4L60E. (cause he doesn't like those transmissions).
I also have a lead on a $400 1994 Blazer that runs/drives that I could steal the transmission from.
Any more input?

[Tim99Zr2]

id go for the 94' how many miles on it?

[Baggey22]

So I just went and test drove that 94. It shifts AMAZING. He said he'd pull it AND give me the good radiator for $325. So I'm gonna call him tomorrow or Thursday and tell him it's a go.

[96superflow]

Quote: Originally Posted by Baggey22

I talked to a mechanic friend and he said that a 93 Blazer WOULD have the 4L60E. (cause he doesn't like those transmissions).
I also have a lead on a $400 1994 Blazer that runs/drives that I could steal the transmission from.
Any more input?

Hmmm.... Ill have to take a look at my dads 1993. I didn't know they put that tranny behind the older engines. Actually, im pretty certain his 93 came with a 700r4 because i remember it having the removable lower bell housing, when i pulled the motor out of my 96, it didn't have the removable lower half. Not certain thou.

[Baggey22]

Idk, the guy that has the $400 Blazer is a car guru, this guy had an AMAZING garage and he assured me that it would bolt right up because his brother works at a Chevy dealership and he had someone else call up with the same question.

[96superflow]

I have no doubt that it would bolt right up, just not sure if sally has one in her or not.

[Baggey22]

Well currently Sally's transmission shifts from park to drive/reverse by way of a cable, and so does the one from the 94. So I'm not seeing an issue. Is there a quick way I can check Sally's current transmission tomorrow to be sure before I commit to that 94 one?

[96superflow]

I stand corrected, I checked around on the internet and a few sites were saying that its 93 and up that got the 4l60e tranny, so my guess is that you are good to go!!! Just didn't want you making a purchase and it causing all sorts of havock.

[Baggey22]

Quote: Originally Posted by 96superflow

I stand corrected, I checked around on the internet and a few sites were saying that its 93 and up that got the 4l60e tranny, so my guess is that you are good to go!!! Just didn't want you making a purchase and it causing all sorts of havock.

Can anyone second this? I just like to be VERY sure about these kinds of things before I dive in.

[Gibson]

google says he is right, so does wikipedia

[ChrisInVT]

Don't forget to give me the VSS

[Baggey22]

Quote: Originally Posted by ChrisInVT

Don't forget to give me the VSS

Idk if I still can. The transfer case I got from New Hampshire didn't work on my truck so I'm still using my other one.

[jwglover]

if your eng is the 93 vortec, it most likely has the 4 L60e tranny, if it is a throttle body it would lean more towards the 700r4
the 700 has a cable from the trottle body to the tranny, 4l60e had a dozen wires going to a plug in right by the dipstick tube on the tranny
a 93 to a 99 or 2000 will interchange, plug a in and go ( 4l60e)
not sure on the 700,s I thought 94 was the last year ofr them ? maybe ?

[Baggey22]

So I just called the guy and told him to pull the transmission. I'm picking it up on Tuesday and dropping the truck off at the mechanic's on Wednesday. Hopefully I can get it back by Monday or Tuesday of the next week.

[pjg1173]

I have a 93 s10 tbi and it has the 4l60e. expensive little bugger to have rebuilt! I couldn't find a used one here in NC for less than $650. I chose to have mine rebuilt for just under $1k with all corvette internals and 2200 stall. anyhow I'd jump all over that deal for that cheap. what color was your trans fluid? Did it look like a strawberry milkshake? if so you you got water in it and cooked your clutches. there is a vent on the top of the trans just behind the bell housing most trucks it falls out or the rubber tube rots off. when you swap transmissions I'd get some vaccum line and run it along with the transfer case vent up between the cab and bed and zip tie it to the roll bar (facing down of course) or some place safe in the engine compartment. I chose to put mine under the hood and its worked out well for me.

[Baggey22]

I picked up that inexpensive transmission this afternoon. As soon as I put it into the bed of my s10 I drove it over to the mechanic's. I never got out of first gear while driving there. Luckily it's only about 1000 yards down the road. I even added fluid before I went to make sure I'd actually make it.
So in a few days I should get it back.

[96superflow]

pjg1173, you live in jacksonville,nc??? Damn man, we should get together and wheel sometime when i get my sas finished!!! Jacksonville aint but about an hour and a half away from greenville. Know any good spots in j-ville? All the ones in g-vegas are being closed down due to a bunch of iddiots in jeeps going in there an tearing it up completely. End hack, and sorry bout that too baggey

[pjg1173]

Quote: Originally Posted by 96superflow

pjg1173, you live in jacksonville,nc??? Damn man, we should get together and wheel sometime when i get my sas finished!!! Jacksonville aint but about an hour and a half away from greenville. Know any good spots in j-ville? All the ones in g-vegas are being closed down due to a bunch of iddiots in jeeps going in there an tearing it up completely. End hack, and sorry bout that too baggey

Yeah its the same here. all the good places to go are getting cut off because of idiots. a couple of us here are talking about getting together this fall and running uwharrie national park.

too bad on the trans baggy. on the 4l60e thats a good indicator of a servo problem or bad friction plates in the higher gears. let us know what it is.

[Baggey22]

UPDATE: I got the truck back a few days ago. He did the transmission but not the radiator for lack of time. I'm gonna have time to do it this week but I have a question
If I'm replacing the radiator do I have to drain out ALL the transmission fluid going to it?
Basically if someone can do a step by step on the specifics that would be great. Thanks.