chevy pickup need help

[plottsrus]

I have a full size pickup 98 model push button 4x4 won't go in to 4hi but will go in 4lo has any body had any dealings with this kind of problem lights on the dash show 4lo and 4hi when in 4lo any help would be great
thanks

[Kevin D]

Just a guess here, but I think the electronic solenoid that engages your front hubs has gone out on you. In 4 low, even though your tranfer case has dropped you into a lower gear, and your dash light has come on, your front hubs still haven't engaged so you're not really in 4WD......you only think you are.

That part is called a thermo something-or-other, if I wasn't so lazy I'd dig out my old repair manual and look it up. The part used to cost about $100 and they are pretty simple to replace. I went through a couple of them in my old Chevy.

[driftwood blue]

if it has the electric controls instead of the manual shift, I think the solenoid down on the front differential might be stuck.

[bearhntwi]

if it has the electric controls instead of the manual shift, I think the solenoid down on the front differential might be stuck.

Yep,even the early 90's chevy's with auto hubs and an actual level to engage the 4x4 had a solenoid to lock it in.It was a pretty common problem the solenoid for ours was only like 13 bucks.

[plottsrus]

It goes in 4lo and the front axle is locked in but it does knot say locked in when you go back to 2hi I think maybe a sensor I think it has two are three sensor on tranffer case

[frs123]

not sure why it happens but have seen that happen with a bad ground wire. can be a bitch to run down but might help. good luck

[plottsrus]

cpnh

[r_cordell]

I would bet that the shift motor went out of it. It bolts onto the left side of your transfer case with three bolts and isn't too big of a deal to change. I have a '99 and it did the same thing. If you get someone to hit the 4WD button while you are underneah listening, you shold be able to hear the shift motor engage, which means that you're getting juice, but it won't stop in 4 HI. That's what mine did anyway and it sounds like the same thing. gets kind of old driving around in 4 LO doesn't it!

[plottsrus]

Yes but 4lo works for the off road but if we would have a big snow are ice storm it would not be good on the highway
Thanks you for ifo. have to check that out