Problem Reports

Drive train jumps from 2 hi to neutral and sometime 4 hi and 4 low. This never happen while driven. Only when you start the vehicle up, you must check the selection.

my service 4 wheel drive indicater is showing on my screen what is the fix for this

Similar problem, switch fail, but now it's even worse. had my actuator replaced, and the thing went into 4 low by itself then neautral, now only runs but wont move in any gear.

sometimes it works ; electric shift, sometimes it doesn't. seems to be affected by slush and cold. sometimes the red neutral light goes on, sometimes the whole thing goes blank. Once I was driving the red neutral light was on and all of a sudden it whacks down into 4 low. Luckily I was just coming ouut of town and not up to speed. When spring hits and I can look at it,I can't get it to do it. Never fixed third winter coming up now.It is getting cold now and it is starting already, red neutral light on. start up truck is in 4x4 without ever selecting it.

Out of no where,pushed 4 wheel drive button, vehicle did not kick in, pushed button off and the light stayed on. Ever since, battery drain. So replaced battery, that battery drained, replaced again to eliminate potential of bad battery and the 4 wheel drive service light comes on while I am driving but I am not accessing 4 wheel drive. Now if vehicle sits more than 1 day (over night) I have to jump the 2002 Avalanche. Had battery tested, Auto Zone claims 14.6 reading when it should only be 12.7 max...where to begin here...I am assuming it is an electrical issue at this point.