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From: Bob on 28 Jul 2010 11:39
Hi,

Have a 2009 Buick LaCrosse.
Fairly typical front wheel drive, I would think.

Question: Never thought about the hump/tunnel running between the front
and rear seats.

If the car is front wheel drive, and presumably the power goes (only) to
the front wheels, what is the tunnel for ?

It's not like in the "old-days" where the tunnel hid the shaft going to
the rear wheels to power them. Right ?

So, what's it for ?

Thanks,
Bob
From: Hachiroku ハチロク on 28 Jul 2010 16:57
On Wed, 28 Jul 2010 11:39:35 -0400, Bob wrote:

> Hi,
>
> Have a 2009 Buick LaCrosse.
> Fairly typical front wheel drive, I would think.
>
> Question: Never thought about the hump/tunnel running between the front
> and rear seats.
>
> If the car is front wheel drive, and presumably the power goes (only) to
> the front wheels, what is the tunnel for ?

There are lots of other things running in the 'tunnel'; wiring, fuel
lines, brake lines and the like.

Besides, I think the LaCrosse is based on a European design that has an
AWD option. Not sure, but I think I read that somewhere.

Also, the 'hump' adds to structural rigidity. Even the original and
subsequent VWs had a hump down the middle, albeit very small.



From: willy on 28 Jul 2010 22:12
On Jul 28, 11:39 am, Bob <rgs...(a)notme.invalid> wrote:
> Hi,
>
> Have a 2009 Buick LaCrosse.
> Fairly typical front wheel drive, I would think.
>
> Question: Never thought about the hump/tunnel running between the front
> and rear seats.
>
> If the car is front wheel drive, and presumably the power goes (only) to
> the front wheels, what is the tunnel for ?
>
> It's not like in the "old-days" where the tunnel hid the shaft going to
> the rear wheels to power them.  Right ?
>
> So, what's it for ?
>
> Thanks,
> Bob

Exhaust
From: Nehmo on 29 Jul 2010 20:06
On Jul 28, 10:39 am, Bob <rgs...(a)notme.invalid> wrote:
> Hi,
>
> Have a 2009 Buick LaCrosse.
> Fairly typical front wheel drive, I would think.
>
> Question: Never thought about the hump/tunnel running between the front
> and rear seats.
>
> If the car is front wheel drive, and presumably the power goes (only) to
> the front wheels, what is the tunnel for ?
>
> It's not like in the "old-days" where the tunnel hid the shaft going to
> the rear wheels to power them.  Right ?
>
> So, what's it for ?
>
> Thanks,
> Bob

You "Have" the car? And you don't want to look underneath? Cut the
carpet with a utility knife, and fold it back. Then use a metal hole-
saw bit (perhaps 3/4") in a drill to make a hole. If you can't see
anything, make another hole in a different location. Chances are you
won't damage anything when drilling, but take care.

~~ Nehmo
From: cuhulin on 29 Jul 2010 21:50
The hump does add some structual strength to the car.And, or whatever
else might be hiding in there.
cuhulin

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