Chevrolet 1998 Tracker Owner's Manual page 212

Rear Towing
If your vehicle has four-wheel drive, don't have it towed
on the front wheels unless you must. If a vehicle with
four-wheel drive must be towed on the front wheels,, set
your manual, freewheeling hubs to FREE or unlock your
automatic freewheeling hubs, and set your transfer case
to two-wheel drive. If your vehicle must be towed on
the front wheels, don't go more than 55 mph (90
k m h ) .
A towing dolly must be used under the front wheels
when towing from the real:
Attach J-hooks around the axle tube.
I
NOTICE:
Take care not to damage the brake pipes on the
axle tubes.
Position the sling crossbar under and forward of the
rear bumper.