1995 K2500 Suburban 4WD high
April 14th, 2013 | 4:54 PM
#2
CF Beginner
Joined: Apr 2013
Posts: 2
Likes: 0
From: Wilsonville Or
April 15th, 2013 | 1:03 PM
#3
Super Moderator
Joined: Jul 2011
Posts: 1,545
Likes: 1
From: Houston TX. USA
Transfer Case 4WD Hi-Lo/Lo-Hi Prodedure
HA, that' s going nowhere fast, or it would be for me 
Sounds like you're pushbutton, I think.
So, what you did was put it in 4WD-Lo, and it won't go back to Hi...right ?
Things like this happen when we don't use Lo very often. Case gets gooped/shellacked and it sticks/reluctant to transfer either direction.
It's totally possible that there may be a bad component, but...
All it took for mine to get back to normal, was a change of (special) Oil, and several attempts (patiently) to get things working again. I use 4WD frequently, but rarely need to put mine in Lo.
You can go ahead and change the oil, but here's a procedure that may get you back into Hi, just so you can drive at normal speeds until you can get that done.
PROCEDURE FOR TRANSFERING:
Accelerate Vehicle to just over 5 MPH.
Shift to Neutral Gear while moving.
As forward motion drops just below 5 MPH, Press 4WD-Hi button.
Transfer to Hi should take place within 10-15 seconds.
Then:
You may need to try this several times to accomplish the transfer.
This procedure can be use for a transfer in either direction (Hi-Lo/Lo-Hi).
(you may hear a very respectable "clunk", that's normal Chevy
)
Rule of thumb I've found is, take the Transfers a Step at a Time:
ie: From 2WD to 4WD-Hi, then to 4WD-Lo.
Then reverse that procedure step by step to return to 2WD.
This may not apply to your situation at all, but..
A WORD TO THE WISE !
Too many times our rides are originally purchased with 4WD mainly because it's
"cool" to have. Then it's forgotten and not used. It's very important to
maintain the Transfer Case, just as you would the Automatic Transmission.
And the case of "Use it or Loose it" applies.
Change the Oil every...25 Kmi for normal use, 50 Kmi for infrequent use.
I take time every month or so, to put my Burb in 4WD-Lo just for a few
blocks at slower speeds, to get it "stirred" up
Sounds like you're pushbutton, I think.
So, what you did was put it in 4WD-Lo, and it won't go back to Hi...right ?
Things like this happen when we don't use Lo very often. Case gets gooped/shellacked and it sticks/reluctant to transfer either direction.
It's totally possible that there may be a bad component, but...
All it took for mine to get back to normal, was a change of (special) Oil, and several attempts (patiently) to get things working again. I use 4WD frequently, but rarely need to put mine in Lo.
You can go ahead and change the oil, but here's a procedure that may get you back into Hi, just so you can drive at normal speeds until you can get that done.
PROCEDURE FOR TRANSFERING:
Accelerate Vehicle to just over 5 MPH.
Shift to Neutral Gear while moving.
As forward motion drops just below 5 MPH, Press 4WD-Hi button.
Transfer to Hi should take place within 10-15 seconds.
Then:
You may need to try this several times to accomplish the transfer.
This procedure can be use for a transfer in either direction (Hi-Lo/Lo-Hi).
(you may hear a very respectable "clunk", that's normal Chevy
)Rule of thumb I've found is, take the Transfers a Step at a Time:
ie: From 2WD to 4WD-Hi, then to 4WD-Lo.
Then reverse that procedure step by step to return to 2WD.
This may not apply to your situation at all, but..
A WORD TO THE WISE !
Too many times our rides are originally purchased with 4WD mainly because it's
"cool" to have. Then it's forgotten and not used. It's very important to
maintain the Transfer Case, just as you would the Automatic Transmission.
And the case of "Use it or Loose it" applies.
Change the Oil every...25 Kmi for normal use, 50 Kmi for infrequent use.
I take time every month or so, to put my Burb in 4WD-Lo just for a few
blocks at slower speeds, to get it "stirred" up
Last edited by SWHouston; April 15th, 2013 at 2:18 PM.
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