4x4 is not working help

[grego12r]

hi i got 2000silverado4x4 lt and my 4x4 is not working i did check the fues and one under the hood is blown the (ATC 20a)FUSE i did get new fuse it did work for like 2 min and got blown agine i got 25a fues and got blown too is the swich bad or somting else

[korndogg]

I cant help you with your problem but never, never, NEVER step up the amperage on a fuse unless you like your truck extra crispy..I know that 5 amps isnt a huge differance but its still not a good thing to do.

[bmcl]

Originally Posted by grego12r

hi i got 2000silverado4x4 lt and my 4x4 is not working i did check the fues and one under the hood is blown the (ATC 20a)FUSE i did get new fuse it did work for like 2 min and got blown agine i got 25a fues and got blown too is the swich bad or somting else

There is a solinoid that actually engages the system, sounds to me like that's your problem

[grego12r]

what solinoid and when i put new fuse in it work but only for few min and it blows it can it be the swich

[bmcl]

Originally Posted by grego12r

what solinoid and when i put new fuse in it work but only for few min and it blows it can it be the swich

on the outside of the transfer case their should be a device with wires going to it the wires come from the switch on the dash. When you push the switch it engages the solinoid which engages the four wheel drive. Once engaged the solonoid is automatically shut off like a starter. I've had two friends who have had a similar loss of four wheel drive, both times it was the solinoid. I agree with korndogg that increasing the fuse is a bad idea as the fuse is blowing for a reason, like the solinoid is staying in the engaged position, and the high current causes it to pop the fuse.

[grego12r]

what about the transfer case control module that is behind headlight switch
and the solinoid is that the transfer caes shift motor
did your friend buy new solinoid and that fix the problem and how much is that solinoid thank you for your help

[bmcl]

Grego12,

On my friend's 2000 (Serria) it was a unit actually attached to the transfer case, Lying on your back under the truck it was on the upper left side he said, he can't remember the exact cost, but it was under $100.00.

[grego12r]

do you know what is the part # fot the solinoid i went to the dealer and there is noting called solinoid canyou find the part # for this solinoid thing thanks alot

[grego12r]

anybody

[jumpingjack66]

You need to give a better description of you vehicle IE automatic tranny or not ,motor ect. Secoundly go buy a repair manual at autozone or somthing and use the trouble shooting tables or look up that section for the transfer case and look for the specific name of the part if its not a selanoid then it may be called a actuater rmotor or something you just need to do a little work yourself. somebody will respond soon..i don't know but i have a manual tranny and i don't know if i have the same transfer case as you..did you get under your truck and look for it?..jj

[jeverett]

You've got a bad ass short somewhere. I guess it could possibly be the switch shorting out.