04 silverado 246 tansfer case

[aokss]

Hey, I have a 04 1500 silverado 4x4 with transfer case problems. Had it scanned at the dealership with the codes c0327 and c0374. the dearlership said it was the transfer case motor was bad. I unhooked the NEG. cable off battary and replaced the transfer case motor and 2 hours later i was done. But now you can hear tranfer case motor shifting at tranfer now and along with the axle actuator engageing. but still no 4x4? is there a way to check the transfer chain w/o tearing it apart or should i be looking for something else being wrong?

[j cAT]

Originally Posted by aokss

Hey, I have a 04 1500 silverado 4x4 with transfer case problems. Had it scanned at the dealership with the codes c0327 and c0374. the dearlership said it was the transfer case motor was bad. I unhooked the NEG. cable off battary and replaced the transfer case motor and 2 hours later i was done. But now you can hear tranfer case motor shifting at tranfer now and along with the axle actuator engageing. but still no 4x4? is there a way to check the transfer chain w/o tearing it apart or should i be looking for something else being wrong?

the encoder transfercase motor locks the front and rear axles together. you should heard/feel the engagement when placing the vehicle in locked 4 WD.

the locking actuator locks the front axle so it is one axle.

c0374 means you could have other problems . the computer senses slipage and the vehicle in 4wd should not be slipping.

the encoder motor you installed can be defective,the wiring may be defective,the encoder motor may not have been properly connected to the transfercase fork.

[aokss]

Originally Posted by j cAT

the encoder transfercase motor locks the front and rear axles together. you should heard/feel the engagement when placing the vehicle in locked 4 WD.

the locking actuator locks the front axle so it is one axle.

c0374 means you could have other problems . the computer senses slipage and the vehicle in 4wd should not be slipping.

the encoder motor you installed can be defective,the wiring may be defective,the encoder motor may not have been properly connected to the transfercase fork.

I know the axle is locking in and the transfer case motor is shifting now(still no 4x4 when i take it out in the soggy grass). I drained some of the fluid out of transfer and its not blue its pretty black in color. so thats leading to me something internal im just not for sure about how to trouble-shoot/pin point the problem. (I love the old NP 205's)
going to dain it tomorrow and add new auto trax fluild see if that helps any.

[j cAT]

Originally Posted by aokss

I know the axle is locking in and the transfer case motor is shifting now(still no 4x4 when i take it out in the soggy grass). I drained some of the fluid out of transfer and its not blue its pretty black in color. so thats leading to me something internal im just not for sure about how to trouble-shoot/pin point the problem. (I love the old NP 205's)
going to dain it tomorrow and add new auto trax fluild see if that helps any.

if the trac II fluid is black its a good indication the clutches are worn out.

when the fluid turns a gray blue color its time to change this fluid. 30-40,ooo mi I do this. however replacing the fluid is dependent of use. some who use the vehicle for plowing heavy towing replace more often.

torque the fill drain plugs 12ft lbs max ...you can crack the case if too much torque. use thread sealant , don't use teflon tape.

[aokss]

Originally Posted by j cAT

if the trac II fluid is black its a good indication the clutches are worn out.

when the fluid turns a gray blue color its time to change this fluid. 30-40,ooo mi I do this. however replacing the fluid is dependent of use. some who use the vehicle for plowing heavy towing replace more often.

torque the fill drain plugs 12ft lbs max ...you can crack the case if too much torque. use thread sealant , don't use teflon tape.

Update:
I changed the the fluid today put in the pretty blue auto-trax ll, 2 quarts@ $9.00 each and drove it for awhile then took it out back in the soggy wet grass and I got stuck it didn't help none at all.
Here's a question: With the front drive shaft disconnected and the transfer case in 4H should i be able to rotate the front output shaft on the transfer by hand?
Any ideas?

[777stickman]

I do not think that you should be able to turn the front output shaft when any 4wd is selected. When "auto" 4wd is selected it may be possible. It sounds like, as j cAT said, that the internal clutches are toast.

[j cAT]

Originally Posted by aokss

Update:
I changed the the fluid today put in the pretty blue auto-trax ll, 2 quarts@ $9.00 each and drove it for awhile then took it out back in the soggy wet grass and I got stuck it didn't help none at all.
Here's a question: With the front drive shaft disconnected and the transfer case in 4H should i be able to rotate the front output shaft on the transfer by hand?
Any ideas?

with the vehicle in locked 4wd, jack up the front axles off the ground. you should not be able to rotate the wheel[s]. because the front and rear axle is locked as one , if the transfercase is working.

worn clutches are common.
make sure all tires are rotated and the same wear/size. rotate tires 10-15,ooomiles. check fluid at every 5,ooomi for blue color. never operate in any 4wd position on dry solid pavement. this is part time 4wd.

that includes AUTO 4wd...

[aokss]

Originally Posted by j cAT

with the vehicle in locked 4wd, jack up the front axles off the ground. you should not be able to rotate the wheel[s]. because the front and rear axle is locked as one , if the transfercase is working.

worn clutches are common.
make sure all tires are rotated and the same wear/size. rotate tires 10-15,ooomiles. check fluid at every 5,ooomi for blue color. never operate in any 4wd position on dry solid pavement. this is part time 4wd.

that includes AUTO 4wd...

Well Thanks guys....sooo now I know what my next project is. :-(

can you all recommened and good web site or manuel with a good description and procedure on tear down/rebuild of this transfer case? google hasn't be much help on this.

[j cAT]

Originally Posted by aokss

Well Thanks guys....sooo now I know what my next project is. :-(

can you all recommened and good web site or manuel with a good description and procedure on tear down/rebuild of this transfer case? google hasn't be much help on this.

call transmission shops in your area. make sure they are familiar with your issues with this transfercase. ask your friends etc..for any help selecting a repair shop that will stand behind the repair and use quality replacement parts.

post back how you made out and what was worn and needed replacing.

[aokss]

Originally Posted by j cAT

call transmission shops in your area. make sure they are familiar with your issues with this transfercase. ask your friends etc..for any help selecting a repair shop that will stand behind the repair and use quality replacement parts.

post back how you made out and what was worn and needed replacing.

I was planning on doing it myself. Like to get as much knowledge of this that I can before tearing it down.

[777stickman]

Try this site.

http://alldatadiy.com/

[aokss]

Well after i posted here and learned a few things. I figered that the clutches was worn out and never really gave it much though about it. figurer I would worry about it when i get ready to work on it, BUT the other morning I get in the truck togo work I noticed that the light was on for 4LOW. Thought HMMMM..... so i took off and it was actually in 4 LOW, so i stopped and put the truck in N and let it roll a little and pushed 2H the light flashed for about 20 sec. and then it did nothing!!(sevice 4WD can on) Then after a little while of trying. it finally shifted into 2H. so now i dont know what to think about it. The tranfer still works but not when i need it to.
Any opinion??

[j cAT]

get the 4wd codes checked. donot know why on first starting you where in LO 4wd .

I would just for the hell of it replace the 4wd select sw. or at least resolder those joints on the switch pins to circuit board. this is a poor Q.C. item.

[aokss]

Originally Posted by j cAT

get the 4wd codes checked. donot know why on first starting you where in LO 4wd .

I would just for the hell of it replace the 4wd select sw. or at least resolder those joints on the switch pins to circuit board. this is a poor Q.C. item.

I just got done take the switch out and apart and the solder joints on the pins looked great no cracks or burnt spot. yeah like i said frist thing that morning 4LO light was on and it was in 4LO and you could tell it to. later that day when i got home i took it out back in the wet grass and tried 4H and nothing i was stuck. GRRR..... the last time i got the codes pulled i had c0327 and c0374 so i replaced the tranfer case motor and the autotrac fluid.

[j cAT]

I know about the prior issue and work done.

as mentioned before the clutch in the transfercase is worn out. there fore no front to rear axle connection just 2 wd. rear wheels.

going into another drive position by itself , I don't know.