GMC C series 2002 Owner's Manual page 183

Towing Your Vehicle From the Front
(All Wheels On the Ground)
Your vehicle may be towed on all wheels provided
the steering is working. Remember that the power
brakes and power steering will not have power assist.
Vehicles with air brakes will not have brakes.
There must be a tow bar installed between the
towing vehicle and the disabled vehicle.
Before Towing
Block the wheels of the disabled vehicle. On vehicles
with air brakes, release the emergency brake system by
compressing the brake chamber springs as outlined in
this section. (This is to prevent the possibility of the
emergency brake being applied during towing.)
On vehicles with hydraulic brakes, release the
parking brake fully by moving the lever to the
-
fully released position.
On vehicles equipped with an electric/hydraulic
parking brake, remove the propshaft.
Disconnect the propshaft at the rear axle (forward axle
on tandem axle models). Secure the propshaft to the
frame or crossmember.
5-16
If there is damage or suspected damage to the axle(s),
remove the axle shafts. Cover the hub openings to
prevent the loss of lubricant or entry of dirt or
foreign objects.
After Towing
1. Block the rear wheels and install axle and propshafts.
2. Check for proper phasing of universal joints.
3. Apply the emergency brake system before
disconnecting from the towing vehicle.
4. Check and fill the rear axle with oil as required.
Towing Your Vehicle From the Rear
(Rear Wheels Off the Ground)
Before Towing
Secure the steering wheel to maintain a straight
position. Make certain that the front axle is not loaded
above the front axle Gross Axle Weight Rating (GAWR)
as indicated on the vehicle's GVW Rating label.
After Towing
Block the rear wheels and release the steering.
Then apply the parking brake system before
disconnecting from the towing vehicle.
Refer to the transmission shift label for
additional information.
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ahead