4wheel drive switches...stays in Neutral?

[HSTONKA]

Sometimes I get in my truck, fire it up and the red light stays on for Neutral, and never switches to 4 hi. I can press the 4 hi button and it will stay in 4 hi. But I have also noticed that if I forget to look and I'll be driving and it will still be in Neutral (redlight) and not driving any different at all than if it was in 4 hi. Its out of warranty, any suggestions? :confused:

[HummerMann]

This happened on a few '05 and '06 models. There is a thread in here in the technical section in the summer of 2005. As I remember it's a relay that is cheap and easy to have replaced.

[pdsq99f4]

How's your battery?

[HSTONKA]

battery has never been replaced, '05 SUT with 55k on it......

[pdsq99f4]

You may want to have the battery checked out to make sure it is up to par. You could be having a low voltage situation to the tccm when first starting it up causing it to do weird things.

[BUMMER]

I would like to revive this thread. Ive been experiencing the same problem. My TC tends to go from 4HI to The RED NEUTRAL Light on it's own. I would like to resolve this myself before taking it to the dealer. From the info I have gathered these could be some of the fixes but would like to hear from others who have resolved this

1- Replace TCCM Actuator?
2- Replace relay fuse?
3- Replace Encoder motor?
4- Go through all TC drives 25 times?

[HummerJim]

I can't find the old thread on this but I remember something about going from 4Hi into 4 Lo and 4 Hi lock several times to see if it clears things up.

[BUMMER]

Jim, I believe that would be similar to what Ive read by going through 4HI and 4LO 25 times. I don't see how that would work but I will give it a try. The funny thing is when the TC goes into Neutral, the truck seems to drive smoother however my gas mileage only averages 8.9 at best!!

[Cesardajr]

i am having the same issue.
i thought maybe since i have not change my transfer case fluid (52K miles) it may be a warning to change it?
if you guys find a fix please post it.

[BUMMER]

Cesarjajr, does your light stay in Neutral or does it go back and forth to 4HI like mine? Has your gas mileage changed?

[Cesardajr]

Cesarjajr, does your light stay in Neutral or does it go back and forth to 4HI like mine? Has your gas mileage changed?

it stays red in netural, i have to hit the 4 hi and then it will stay on 4 hi.
it happens on and off. i shift to drive and sometimes it's red in neutral.
some times im already driving when i see it in red neutral and didnt see when it changed.
i have seen no dip in miles + or -.

[The_Yeti]

This happened to me the other day and even the service 4wd came on after trying to switch. I pulled over turned off and then cycled thru the choices. seemed to work. I didn't do it 25 times but should probably give it a run thru. I've searched the issue on this site. Some say sticky cyleniod or error from never using. So I plan to cylce thru the 4wd choices and air ride height adjustment more often.

[rmutchler]

Older post, but my SUT suddenly started having the same problem. Does driving while the neutral (red light) is on hurt anything? I Ned to have it looked at, unless someone knows the solution...

[SmokeyJoe]

I just posted a thread on this myself.

This just started on mine after I installed 2 new hubs. Never did it before, so I thought it was related - Maybe not?

[rmutchler]

Took mine to the dealer today...broken fork in the transfer case...$280.00, covered on my warranty.