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Go Back   Hummer Forums by Elcova > Hummer H3 Discussion Forums > General H3 Discussion

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  #1  
Old 08-31-2008, 10:47 PM
baboon baboon is offline
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Default High lock and low lock

When do you these buttons? The four-high-lock and low lock?

Thanks.
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  #2  
Old 08-31-2008, 10:54 PM
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Mr_Pat Mr_Pat is offline
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Default Re: High lock and low lock

Check out your manual
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  #3  
Old 08-31-2008, 11:02 PM
baboon baboon is offline
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Default Re: High lock and low lock

Quote:
Originally Posted by Mr_Pat
Check out your manual

It's in the garage and I'll have to go through the table of contents, help out a lazy bro please
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  #4  
Old 08-31-2008, 11:31 PM
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Mr_Pat Mr_Pat is offline
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Default Re: High lock and low lock

Quote:
Originally Posted by baboon
It's in the garage and I'll have to go through the table of contents, help out a lazy bro please


Dude I am to lazy to type all that stuff out.... why dont you google H3 Owners Manual... :lol:

here sit tight let me do it for ya.

http://www.hummeranswers.com/files/hum_h3_2006_man.pdf
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  #5  
Old 08-31-2008, 11:36 PM
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Mr_Pat Mr_Pat is offline
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Default Re: High lock and low lock

4m(Four-Wheel High): This setting is used for
driving in most street and highway situations. You can
also use this setting for light or variable off-road
conditions.

N (NEUTRAL): Shift the vehicle’s transfer case to
NEUTRAL only when towing your vehicle. See
Recreational Vehicle Towing on page 4-57 or Towing
Your Vehicle on page 4-57 for more information.
Notice: Driving on pavement in Four-Wheel
High Lock or Four Wheel Low Lock for extended
periods may cause premature wear on your vehicle’s
powertrain and tires. Do not drive in Four-Wheel
High Lock or Four-Wheel Low Lock on pavement for
extended periods.

4mQ(Four-Wheel-High Lock): Use this mode
when you need extra traction in most off-road situations
such as sand, mud, snow or level, rocky trails.
Notice: Operating your vehicle in
Four-Wheel-Low Lock above 30 mph (48 km/h) for
any extended period of time could cause damage to
the transfer case. Do not operate your vehicle in
Four-Wheel-Low Lock above 30 mph (48 km/h)
for extended periods.

4nQ(Four-Wheel-Low Lock): This mode
delivers extra torque to all four wheels and is used
for extreme off-road conditions. You might choose
4-Wheel-Low Lock if you are driving in off-road
situations, such as, deep sand, mud, or snow and
climbing or descending steep hills.
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  #6  
Old 08-31-2008, 11:40 PM
baboon baboon is offline
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Default Re: High lock and low lock

Quote:
Originally Posted by Mr_Pat
4m(Four-Wheel High): This setting is used for
driving in most street and highway situations. You can
also use this setting for light or variable off-road
conditions.

N (NEUTRAL): Shift the vehicle’s transfer case to
NEUTRAL only when towing your vehicle. See
Recreational Vehicle Towing on page 4-57 or Towing
Your Vehicle on page 4-57 for more information.
Notice: Driving on pavement in Four-Wheel
High Lock or Four Wheel Low Lock for extended
periods may cause premature wear on your vehicle’s
powertrain and tires. Do not drive in Four-Wheel
High Lock or Four-Wheel Low Lock on pavement for
extended periods.

4mQ(Four-Wheel-High Lock): Use this mode
when you need extra traction in most off-road situations
such as sand, mud, snow or level, rocky trails.
Notice: Operating your vehicle in
Four-Wheel-Low Lock above 30 mph (48 km/h) for
any extended period of time could cause damage to
the transfer case. Do not operate your vehicle in
Four-Wheel-Low Lock above 30 mph (48 km/h)
for extended periods.

4nQ(Four-Wheel-Low Lock): This mode
delivers extra torque to all four wheels and is used
for extreme off-road conditions. You might choose
4-Wheel-Low Lock if you are driving in off-road
situations, such as, deep sand, mud, or snow and
climbing or descending steep hills.

thanks bro Seriously I was just about to get the manual from my garage but now I can just sit here instead I tried googling things like "H3 hummer 4 high lock low lock" but was just getting these short consumer review articles.
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  #7  
Old 08-31-2008, 11:43 PM
baboon baboon is offline
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Default Re: High lock and low lock

hmmm...so after reading that I don't see the advantage of using four-high over four-low when off-roading? It says four-low is for extreme conditions, and four-high is for moderate conditions, but is there any disadvantage to using four-low for moderate conditions?
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  #8  
Old 08-31-2008, 11:58 PM
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RazM RazM is offline
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Default Re: High lock and low lock

Quote:
Originally Posted by baboon
hmmm...so after reading that I don't see the advantage of using four-high over four-low when off-roading? It says four-low is for extreme conditions, and four-high is for moderate conditions, but is there any disadvantage to using four-low for moderate conditions?

If you're gunning it through lots of mud or snow, 4Hi Lock is the perfect mode for it. You do not want to rev to high or go too fast with 4Lo Lock. In my experience, I've left 4Lo when I'm really in the ruts, and 4Hi lock for everything else. This is mainly speaking for mudding or deep snow, which is the majority of offroading that I do.

Someone else can tell you about rock crawling, there's not too much of that where I am.

*edit* forgot to put lock after 4Hi, don't want to confuse it with the default 4Hi mode...

Last edited by RazM : 09-01-2008 at 05:09 AM.
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  #9  
Old 09-01-2008, 01:13 AM
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Default Re: High lock and low lock

The only time I have to go into 4 low is when rock crawling or on a couple extremely torn up mt trails or any time I climb any really steep parts.
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  #10  
Old 09-01-2008, 02:33 AM
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H3slate H3slate is offline
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Default Re: High lock and low lock

4 lo limits your top speed to under 20 mph. It should be used for traversing rocky roads, deeply rutted areas, steep hill climbs and descents. It gives you the maximum amount of torque at lower rpms.

4 hi should be used the majority of the time when off road. It splits the power 50/50 between the front and rear diffs, great for traveling down gravel roads, sand dunes, etc.
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  #11  
Old 09-01-2008, 04:27 AM
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Default Re: High lock and low lock

4hilock is what i use most of the time offroading, im a florida guy so mostly mud for me, i have had to use4 low before in sandy areas and areas with steep rocky inclines, usually i only go into 4lo when nothing else can get me out. Most of the time if your not in intense situations the normal 4hi mode thats used for road driving will usually do just fine, just switch it up when you find your self needing a little more.
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  #12  
Old 09-01-2008, 03:08 PM
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Default Re: High lock and low lock

I had to pull out a big stump and 4 low worked great,it took little or no effort to get it out.

4 low with the locker on also pulls out stuck rigs great.
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  #13  
Old 09-01-2008, 08:00 PM
baboon baboon is offline
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Default Re: High lock and low lock

Thanks guys, that's definitely a lot more info than what's in the owner's manual

Here's a pic I took yesterday (in regular 4 high mode) Nothing very demanding but I thought the landscape would make a good picture.

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  #14  
Old 09-02-2008, 10:01 PM
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evldave evldave is offline
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Default Re: High lock and low lock

Seriously, if you don't know the differences between 4lo and 4 hi (or just FT 4wd) AND you are too lazy to go to the garage to get the manual, trade in your H3 and get an FJ cruiser. Hummer's have a bad enough rep as it is, we don't need anymore lazy stupid jackazzes bringing the brand down any more than it is...
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