Is there anyway to get them to 2WD when just cruising around town

These aren't constantly in 4WD are they? 'cause i couldnve sworn the4 locker hi/lo was at the nuetral position when we brought it home yesterday and now it's constantly 4hi w/o the locker

 

you didnt get the memo?

 

i hope it dont go in to a 2wd or else there is no reason to own hummer.last time i checked hummers are alway's in 4wd.

 

ummmm........yea......

 

That collection of cars, did any of them come with an Owners Manual? [&o]

Technically they are in AWD, until you lock it into 4WD.

 

Ahh Ok i just thought it might do this for in the city 'cause i know alot of GM 4x4's have it where you can switch on the fly

 

 

I hate to sound ignorant, but what, exactly, is the difference between 'full time AWD' and 4WD? H3 is full time AWD, but I can switch it to 4WD. Since it has 4 wheels, doesn't 'All' = '4', in this context? My wife's Chevy Express Van is labeled AWD and it handles superbly in snow.

 

Is it 50 Cents or Half a Buck?

 

AWD typically describes a car with a center differential (T Case) that allows the vehicle to be driven on dry pavement without damaging the drivetrain because all four wheels can turn at different speeds when turning etc... AWD is a little more complicated than 4WD because the center differential is essentially a series of clutches that distributes power to the front and rear other than just 50% each..... ie. the H3 is 60% rear, 40% front.

When you lock in the T Case, power then is evenly distributed to the front and rear 50% ea. and then acts like a 4WD T Case, locking the front to rear, and you should NOT drive on dry pavement with the T Case in lock. AWD cars do not have the ability to lock their center differential and do not have high and low gear ranges. Hummer has married the two to market to soccer moms, and off roaders at the same time.

A simpler way to look at it, AWD cars, mini vans, etc. are not off road vehicles. While your wifes AWD van gets good traction on wet/slippery pavement, it is not going to do so hot climbing rocks, logs, going trough mud bogs, and climbing steep uneven terraine.