Help me understand the 4HI 4Lo Settings on H3

[H3Lady]

Can someone kinda of let me know how to use the buttons on the dash for 4hi 4lo and when to use them and in what condtions. We have sometime heavy snow here too.

PS...I turn off stabiltrack and I feel the H3 rides better, but plan to leave it on in wet weather.

[H3Lady]

Can someone kinda of let me know how to use the buttons on the dash for 4hi 4lo and when to use them and in what condtions. We have sometime heavy snow here too.

PS...I turn off stabiltrack and I feel the H3 rides better, but plan to leave it on in wet weather.

[Hummer Guy]

4HI -- everyday driving
4HI Lock -- Slippery mud, snow, ice, sand
4LO Lock -- Rock crawling, step climing, DEEP snow.

Some places will say to use 4hi lock in the rain -- I've never been a fan of that recomendation unless it's some kind of hurricane...

[PARAGON]

<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by H3Lady:
PS...I turn off stabiltrack and I feel the H3 rides better, but plan to leave it on in wet weather. </div></BLOCKQUOTE>Where is the switch located for this?

[Georgemarc]

Just to the right of the 4LO Lock

[Hummer Guy]

In order to turn it off you have to hold it down for 5 seconds and a little light will come on the dash...if you have an adventure package, its right next to the locking rear diff button

[H3Lady]

Thanks Hummer guy

can you use the 4HI lock on the hwy. I heard not too for faster speeds

any truths


I turned stabitrack off and it seemed to move better ????????????????????

[Hummer Guy]

if you're able to go highway speeds and not lose control, you probably don't need 4HI Lock...Plus your gas milage would probably decrease as well...

[HummerNewbie]

If you need to be in 4HI Lock, you probably shouldn't be driving at highway speeds anyway

[jkH1+H2=H3]

Should and does the 4 ^ always stay lit.? Do you need to be in Dive 2 or 3 to have the Rear Differental work??

[jkH1+H2=H3]

Whats up Sorry my english is a little off today.....U must be a Babe magnet.

[BUKHUM]

thanks everyone for the lesson when to use 4HI, 4HI Locked, 4LO...good review

SFOX...danks fo duh engis lesson...

[H3Lady]

yup thanks

[wannabeH3]

<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by Hummer Guy:
In order to turn it off you have to hold it down for 5 seconds and a little light will come on the dash...if you have an adventure package, its right next to the locking rear diff button </div></BLOCKQUOTE>

its 10 seconds!

[Steve R]

Anyone care to touch on the subject at hand?

The only difference between 4hi OR 4hi-locked is that the transfer case locks; this is essentially the center-differential. You only want this "locked" situation when there can be slippage on the ground (mud, snow, sand...loose conditions).

You do not want to use this setting when on pavement. We've had a couple instances where some H2 owners forgot to switch out of 4hi-locked and drove on pavement long distances...only to fry their t-cases!

Enough said...but if you want more:

When a vehicle makes a turn, the outside wheel will turn more rotations then the inside wheel...this is the reason for a differential, it essentiall absorbs the difference in the axle. Much in the same way, when a vehicle turns the front axle will cover a different distance then the rear axle...and so the transfer case has a slippage device to account for this. This slippage device can make things sloppy offroad, and so we lucky Hummer owners can "lock" this center differential.....and so the transfer case is "locked"

Enough said....want more?

Try this: find a parking lot where there is dirt. do some tight circles and you can feel the vehicle easily turning. (roll down your windows to listen). NOW, go into 4hi-locked and make those same circles: you may sense/feel some hesitation and even hear the ground breaking as the slippage is no longer afforded.

Good quesiton!

[H3OH]

Last I checked, I had a little black book sitting in my glove compartment...

[Hummer Guy]

<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by wannabeH3:
<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by Hummer Guy:
In order to turn it off you have to hold it down for 5 seconds and a little light will come on the dash...if you have an adventure package, its right next to the locking rear diff button </div></BLOCKQUOTE>

its 10 seconds! </div></BLOCKQUOTE>

I'll bet you lunch it's 5....