Just went outside to move my truck, driveway is uphill and icy as all heck right now. Go to put it in 4 wheel and it wont engage. I have the shift on the fly. Tried it a number of times, turning the truck off and trying again, putting it in nuetral and trying, can't even get it into low... Hope you guys can help me with this one, though I probably won't be able to work on it for week with this cold weather in the Northeast and no garage. Thank guys. Oh yeah, one last thing... I got towed last week for letting my meter expire, would this have anything to do with it, and if so, can I go after them for the repair?

Barry

 

Sounds like the solenoids may be stuck from lack of use. They are on the firewall near the battery I think. I always recommend using 4x4 and 4x4L at leat once a month for a minute to keep things moving freely.
Jimmy

 

Well, I used the 4 wheel quite a bit before the holidays, so it wasn't that long ago. If it is the celenoids, what do I need to do to fix this problem?

 

HMMM, I am not sure then unless maybe they got moisture in them and froze.

Hopefully Racerguy will chime in soon and have some better intel.
I am pretty sure that that function is controled by the GEM (Generic Electronic Module). Is there any other problems that you have noticed? This thing controls quite a few things.
Jimmy

 

Do the 4x4 lights on the dash come on at all when you try to shift it?
Have you checked all the fuses?

 

No lights, just sounds like its trying to engage and then stops. Don't seem to have any other problems with the truck right now other than the #8 cylinder missing...

 

Hey guys, thanks for the quick input... went out this morning and tried it again, engaged no problem... must have been frozen selenoids like you said. Thanks again! How do i prevent this?

 

Other than making sure that the seal between the hood and the firewall cowl is good, I am not sure.
Maybe a coating of WD-40 might repel moisture.
Oh, and don't drive thru any rivers or lakes.
Has the engine been tuned up? How many miles are on it? Might be the dreaded COP going bad, or could just be an old plug.
Jimmy

 

The COP on cylinder 8 is shot, been meaning to change it out for weeks, but it hasnt broken 30 degrees here in weeks. No garage to work in either, its killing me.

 

you might not want use wd-40 it contains an acid which helps break down rust, ever notice that after using wd-40 the metal parts that you sprayed still rust?it can also damage some electrical componants. use a silacone based lube to help displace the water. read the label on any sprays before using them, i used a can of electrical parts cleaner and it melted the plastic box that holds the parts in place, just some info to pass on.

 

wd40 is a dryer for moisture but does leave a residue almost naked to the eye but with prolonged use it builds up and you can see it.Wd 40 is not much of a lubricant.I use it on my guns once in a while to clean out brushed gun powder and dry if wet.I personally would not use it on electrical componants.

 

I wonder if using that ignition sealer spray would work?