4wd low will not disengage

okay not one word what the tires of the car are rolling on
dirt or ice. or raw hard pavement
nor the exact control settings are set.

the jeeps have many 4wd options new, (I have 2020 here)and I have full factory service manuals on all GC. made. gen 1,2,3.
most have Three levels of 4WD.
2005 to 2010 same as mine.
came with 2 choices new of transfer cases not told by you at all.
lets do both and answer what THEY DO and DO NOT DO.
nv140
The NV140 Quadra-Trac I (no part time modes) and uses brakes top stop tire slip. (smart)
is a single-speed transfer case and it is used in the Quadra- Trac I Full-Time 4-Wheel Drive System. It
provides full-time 4-wheel drive. The transfer case operates with an open center differential dividing engine torque
nearly evenly with 48 percent of engine torque to the front axle and 52 percent of engine torque to the rear axle. SO NOT YOURS

yours is this, read the users guide on 4wd low limits.
nv 245 has ,Quadra-TracT II and Quadra-DriveT II systems.
4wd low and lockups up the center differential.
and is not for pavement. (lacking ICE covering)
4WD Low, which multiplies engine torque 2.72
times and locks the clutch pack for maximum traction at all times
key word LOCKS. this for offroad and or ice only.
not for pavement.
do not use Low. or any kind of part time 4 wd modes, on pavement free if ice. (no matter the car owned)
or you windup the axles and steering fights the driver.
and is very dangerous to do and makes ABS go nuts. etc.
read page 240 in your users guide.
240
The Quadra-Trac IItransfer
case provides three mode positions - four wheel drive
high range, neutral, and four wheel drive low range.
and
The 4 LOW position is intended for loose, slippery
road surfaces only. Driving in the 4 LOW position on dry
hard surfaced roads may cause increased tire wear and
damage to driveline components.>. bingo the D word,.


if stuck in 4low
move one or more tire to ice or dirt.
shift out of 4low to 4hi at dead crawl speed,the slower the better
not grinding teeth to deathh wins.

4low is for dirt
or stuck in a snow drift.
otherwise stay out of 4low

https://www.carmanual.org/jeep-owners-manuals/2005-jeep-grand-cherokee-owners-manual-2983/

what are tires touching,??????

• pavement
• snow
• ice
• dirt or what. sorry cant see you drive wrong. (blusH)

shift down what? , the 5 speed manual box?
or 4H to 4L transfer case lever??

part time 4wd does not allow running on pavement.
only , ICE or dirt that is the PART time words. meaning.
full time 4wd or AWD is a whole other matter and what your truck has I Can not guess.
is this your first ever 4wd experience?
when ICE covers pavement that is ICE , not pavement tires touch>
see?


this?
SR5 VERSION? NONE TOLD.
"V6 Shift on the fly Multi-Mode 4WD, V8 Full-Time 4WD"

"Torsen limited slip center differential, lockable in H4 or L4
STAY OUT OF LOCK, UNTIL YOU LEARN NOW. (DANGER)

ok if YES< only use Full time mode, never 4Hi part time on pavement.
if you do this wrong damage to transfer case happens
or worse skid off round.. nasty.
us AWD or full time, only
for 4Hi or 4Low or lock mode, only off road or ON ice.
see???????

LOCK TURNS THE CAR INTO A WW2 JEEP,
OR LIKE MY WRANGLER (OWNED 3) AND MORE.CHEROKEE'S; PT 4WD, AND LOTS OF DRIVING IN DEEP SNOW ME, BACK WHEN.
DOING IT WRONG , WINDS UP BOTH FRONT AND REAR AXLES.
CURE THAT MOVE ONE OR MORE TIRES ONTO DIRT./GRAVEL.
NOW SHIFT OUT OF LOCK AT 1/4 MPH (MEANS CRAWL)
SHIFT TO 2WD OR AWD. NOT 4hI OR 4LOW.AND NOT LOCK

no year car told wow.
2002-2012 over two generations, internally designed the KJ (2002-2007) and KK (2008-2012)

Doing this wrong damages the transfer case chain
the part time 4wd must not be used on pavement,(rule 1 violation)
so now to undo this error
easy get 1 tire on dirt/sand/gravel/ice or grass) an shift to 2wd
going 1mph or slow (crawling) only, be gentle to the transfercase
doing this all wrong, feel the seering wheel fight you , well you are doing this wrong, using 4wd wrong, 4wd is for offroad or ice./snow
not dry nor even water wet pavement.
learn now part time 4wd works
the word PART means only slipper roads, dirt or ice
full time means all surfaces full time. or AWD.
easy to learn.full time has center differential top do that.
or a clutch there to slip preventing part time lockup. or limits damage doing so.

4wd or NOT, 2wd, but 4wd both ends match.
well , not wanting to pulled cover off and have GL5 lube all over
or #2 googling for all Jeep axle codes. (your call)
there is no CHEVY RPO code build list\
#3you call jeep dealer give VIN and he tells build list to you.

or the tests. #4
put car in 2wd, but one rear tire on ICE or wet grass
then move forward quick. (gas pedal

if both tires spin car moves is Positration clutch packed rear gear set.(or lockers of many kinds)
if limited slip 4 gears only then one tire on grass /ice only spins fast and car does not.
there answered all 4 ways.

ok way #5, rear tires off ground both, ON JACKS STAnds safe.
in neutral 4wd box or. if not 4wd tranny in neutral.
hand spin 1 tire and both turn same direction for locker.
if it 1 spins backwards the axle is open (limited slip)
open is 4 gears (side+ spider)
Lockers have a locker or clutch pack just like seen in the A./T BOX.

lockers have vast names. but all lock up some way.
open axles means sans/locks.
I love lockers. saved my bacon vast times. even pulling super heavy boats out of the ramp, and zero slip. 2 tires spin is JOY.
even 2wd drive with a locker is a joy. on snow and ice too.
1 wheel drive is for squids.

Did you fix the E brake problem? Replace the rear cables or cut them at the rear brakes. To much pressure on the T case can keep it from shifting. Especially from 4 low.

Most 4WD systems are designed to be shifted in and out "on the fly". It is less stressful for the drive train doing it while in park however. 4WD does not like cornering - especially on "grippy" surfaces such as dry asphalt (why would you need 4WD on dry asphalt, anyway?). Dry asphalt is really tough on 4WD as the the tires may have minute differences in circumference as a result of wear and since all are spinning at the exact speed (even going straight ahead), those difference add up and strain the drive train. Slippery surfaces allow the tires to slip away those differences as soon as they begin to appear. Even wet pavement allows this to happen, tho not as easily as grass, dirt, snow or ice.

Drive in a tight, complete circle on dirt and you'll see that there's a shorter path of tracks for the inside tires than those on the outside. Yet, the 4WD locks all wheels to turn the same amount. The jerking during the cornering that you're feeling is the inside tires trying to spin to "catch up" to turning at the same rate as the outer tires. See the video linked below.

Check your manual and you'll likely be cautioned against running 4WD on dry pavement for these reasons.

part time or awd ?
do no engage part time 4wd on dry pavement.!! only on ice or dirt.
do post what your tires are touching? dirt or pavement????????

if stuck in 4L , on dry pavement , pull over to side of road, dirt
then shift out. if no dirt anywhere? sand or gravel or grass.?
then jack up one wheel then deselect 4Low. back do 2WD
options for your car, (do post what you have)
qoute sales brochure:
Those going 4WD can enjoy the standard Command-Trac II, or opt for the Selec-Trac II, featuring full-time AWD, 4WD Lo and a rearward-biased torque split. (end quote)

how you drive both cars, varies greatly.
in your glove box is an operators guide , did you read that yet
under how to drive in 4wd or awd.??????????

This happens now and again on 4X4's. You must not continue to operate it on normal "dry" surfaces until you disengage these hubs. Permanent damage will result. First thing to do is make sure you are on wet, loose gravel, sand, dirt, etc. Switch transfer case back to 4Low. With steering straight move a little forward and without hitting the brake slip in neutral allowing truck to come to rest by itself. Switch Transfer case to next position, I assume 4low. Place in drive and drive forward and backward until you feel it come out of 4 low. You don't have to drive it crazy back and forth, just 5MPH normal back and forth maybe 20 feet forward and 20 feet backward. It's good to allow the truck to stop by itself allowing the hubs to spin freely then placing in reverse doing the same. Apply brake, repeat until unlocked. You may find that if it is not unlocking, try to push lever back into 4low, power on, the release accelerator, switch to 4high all the while it is drifting and gently power on again. If you drive on solid surfaces ignoring the driveline, you will bind the axles and destroy some element of your drive line...The weakest points first. Hope this help and do not forget to rate this high if it helped you.

You may have to raise the wheels off the ground to get it to disengage due to the dry pavement binding things up. Another possiblity would be to drive in mud,dirt or wet grass so the wheels can slip and release the binding condition. Sometimes rolling backward in grass helps. I hope this helps.

checkunder the battery pan there is a bellows type of thing acid got on mine and ate the connection up i replaced this unit and 4wd worked by the way u only have 2wd low the transfer case has shifted the the trannie output to low range rear tires will spin not the front the cable that broke shifts a fork in the front pig 2 get the front wheeles engauged not a master tech it happened to me bout 4 years ago