..........no 4x4.............

[electrod]

No 4x4, replaced transfer case motor,starts out 4hi switch to 2hi then back to 4hi nothing,new transfer case motor good. get codes p1866 c1728 p1828 p1820 p1867. Any help would be good.

[excursionMark]

u sure the problem is in the t-case and not in the diffs ... did u manually lock the diffs nd try it because the auto locking vacuum stuff isnt the best thing in the whole world lol

[electrod]

manual lock.........no vaccum

[excursionMark]

im not sure what it could be then but ill give a bump hopefully for someone who does

[4ds4me]

Does that circuit run through a relay?

[Laketrotter]

The Dash 4x4 switch send a signal to the GEM computer which then switches the 4x4 relays. The 2 relays are mounted under the hood next to the fuse box.

[electrod]

............replaced g.e.m. module tonight{those things are not cheap} still no 4x4?????LAKETROTTER how do you check a relay????????? THANKX FOR THE HELP.....

[smokenstroke]

So you can lock the hubs and have 4x4 or not?

[ianstew]

best way to check a relay is swap it with a known good one.

[electrod]

.............no 4x4.......do not lock hubs flip switch to 4hi .......nothing....no dash light