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Downloaded from www.Manualslib.com manuals search engine If you have an automatic transmission, you should use
DRIVE
(D) when towing a trailer. Operating your
vehicle in DRIVE (D) when towing a trailer will
minimize heat buildup and extend the life
of your
transmission. Or, if
you have a manual transmission,
it’s better not to use
FIFTH (5) gear, just drive in
FOURTH
(4) gear (or, as you need to, a lower gear).
When towing at high altitude on steep uphill grades,
consider the following: Engine coolant will boil at a
lower temperature than at normal altitudes. If
you turn
your engine off immediately after towing at high altitude
on steep uphill grades, your vehicle may show signs
similar to engine overheating.
To avoid this, let the
engine run while parked (preferably
on level ground)
with the automatic transmission in PARK (P) (or the
manual transmission out
of gear and the parking brake
applied) for a few minutes before turning the engine
off.
If you do get the overheat warning, see “Engine
Overheating” in the Index.
Parking on Hills
You really should not park your vehicle, with a trailer
attached,
on a hill. If something goes wrong, your rig
could start
to move. People can be injured, and both
your vehicle and the trailer can be damaged. But if you ever have
to park your rig
on a hill, here’s
how
to do it:
1.
2.
3.
4.
5.
6.
Apply your regular brakes, but don’t shift into
PARK
(P) yet, or into gear for a manual
transmission. Then turn your wheels into the curb if
facing downhill or into traffic if facing uphill.
Have someone place chocks under the trailer wheels.
When the wheel chocks are in place, release the
regular brakes until the chocks absorb the load.
Reapply the regular brakes. Then apply your
parking brake, and then shift into PARK (P), or
REVERSE
(R) for a manual transmission.
If
you have a four-wheel-drive vehicle with a
manual transfer case shift lever, be sure the transfer
case is
in a drive gear -- not in NEUTRAL (N).
Release the regular brakes.
When You Are Ready to Leave After
Parking on a Hill
1. Apply your regular brakes and hold the pedal down
while you:
0 Start your engine;
0 Shift into a gear; and
0 R.elease the parking brake.
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Downloaded from www.Manualslib.com manuals search engine 2. Let up on the brake pedal.
3. Drive slowly until the trailer is clear of the chocks.
4. Stop and have someone pick up and store the chocks.
Maintenance When Trailer Towing
Your vehicle will need service more often when you’re
pulling
a trailer. See the Maintenance Schedule for more
on this. Things that are especially important
in trailer
operation are automatic transmission fluid (don’t
overfill), engine oil, axle lubricant, belt, cooling system
and brake adjustment. Each
of these is covered in this
manual, and the Index will help
you find them quickly.
If
you’re trailering, it’s a good idea to review these
sections before you start your trip.
Check periodically to see that all hitch nuts and bolts
are tight.
Trailer Wiring H-T--- ess
The light duty trailer wir is a six-wire harness
assembly. The optional heavy-duty trailer wiring
is an
eight-wire harness assembly. The harnesses are stored under the vehicle, along the passenger-side frame
crossmember on two-door vehicles or on the driver’s side
corner frame rear crossmember on four-door vehicles. The
heavy-duty trailer wiring has a 30-amp feed wire with
an
inline fuse located by the junction block. See
“Fuses and Circuit Breakers” in the Index. Both
harnesses have
no connector and should be wired by a
qualified electrical technician. The technician
can use
the following color code chart when connecting the
wiring harness to your trailer.
0
0
0
0
0
0
0
0
Dark Blue: Use for electric trailer brakes or
auxiliary wiring.
Red: Use for battery charging; it connects to the
starter solenoid (eight-wire harness only).
Light Green: Back-up lamps (eight-wire
harness only).
Brown: Taillamps and parking lamps. Yellow: Left stoplamp and turn signal.
Dark Green: Right stoplamp and turn signal.
White (Heavy Gage): Ground wire.
White (Light Gage): Auxiliary stoplamp.
Securely attach the harness to the trailer, then tape or
strap
it to your vehicle’s frame rail. Be sure you leave
it loose enough
so the wiring doesn’t bend or break,
but not
so loose that it drags on the ground. Store the
harness in its original place. Wrap the harness together
and tie it neatly
so it won’t be damaged.
Page 233 of 416
Downloaded from www.Manualslib.com manuals search engine Section 5 Problems on the Road
Here you’ll find what to do about some problems that can occur on the road.
5-2
5-3
5-3
5 -7
5- 12 Hazard Warning
Flashers
Other Warning Devices
Jump Starting
Towing Your Vehicle
Engine Overheating
5 -20
5-2 1
5-2 1
5-34
5-35
Engine Fan Noise
If
a Tire Goes Flat
Changing a Flat Tire
Compact Spare Tire
(If Equipped)
If You’re Stuck:
In Sand, Mud, Ice or Snow
5-1
Page 239 of 416
Downloaded from www.Manualslib.com manuals search engine Towing Your Vehicle
Try to have a GM dealer or a professional towing
service tow your vehicle. See “Roadside Assistance”
in
the Index.
If your vehicle
has been changed since it was
factory-new by adding things like fog lamps, aero
skirting, or special tires and wheels, these instructions
may not be correct.
Before you do anything, turn
on the hazard
warning flashers.
When you call, tell the towing service:
Whether your vehicle has rear-wheel drive,
four-wheel drive or all-wheel drive.
The make, model and year of your vehicle.
Whether you can move the shift lever for the
transmission and
shift the transfer case, if you
have one.
If there was an accident, what was damaged.
When the towing service arrives, let the tow operator
know
that this manual contains these towing
instructions. The operator may want to see them.
5-7
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Downloaded from www.Manualslib.com manuals search engine I
’ A CAUTION:
To help avoid injury to you or others:
0 Never let passengers ride in a vehicle that is
Never tow faster than safe or posted speeds.
Never tow with damaged parts not fdy secured.
0 Never get under your vehicle after it has
Always use separate safety chains on each
0 Never use J-hooks. Use T-hooks instead. being towed.
been lifted
by the tow truck.
side when towing
a vehicle.
A vehicle can fall from a car carrier if it isn’t
adequately secured. This can cause
a collision,
serious personal injury and vehicle damage. The
vehicle should be tightly secured with chains or
steel cables before it is transported.
Don’t use substitutes (ropes, leather straps,
canvas webbing, etc.) that can be cut by sharp
edges underneath the towed vehicle. Always use
T-hooks inserted in the T-hook slots. Never use
J-hooks. They will damage drivetrain and
suspension components.
1
5-8
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Downloaded from www.Manualslib.com manuals search engine When your vehicle is being towed, have the ignition key
turned to the OFF position. The steering wheel should
be clamped in a straight-ahead position with
a clamping
device designed for towing service.
Do not use the
vehicle’s steering column lock for this. The transmission
should be in
NEUTRAL (N) and the transfer case, if you
have one, should be in 2HI. The parking brake should
be released.
If your vehicle has a floor-mounted shifter and no
electrical power, the electrical solenoid lock must be
overridden to shift from PARK
(P) to NEUTRAL (N).
Follow these steps:
1. Push the base of the shift lever boot forward with
your thumb.
2. Lift the boot and find the white solenoid lever.
3. Move the solenoid lever
toward the driver’s side
to unlock
it.
4. While holding the solenoid lever in the unlock
position, press
the shift lever button and shift into
NEUTRAL
(N).
5. Release the solenoid lever and snap the boot back
into place.
Don’t have your vehicle towed on the drive wheels
unless you must. If the vehicle must be towed on the
drive wheels, be sure to follow the speed and distance
restrictions later
in this section or your transmission will
be damaged. If these limitations must be exceeded, then
the drive wheels have to be supported on a dolly.
5-9
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Downloaded from www.Manualslib.com manuals search engine Front Towing
Tow Limits -- 35 mph (55 kd), 50 miles (80 km)
Vehicles with the all-wheel drive or four-wheel drive
with the electronic transfer case option must use a towing dolly under the rear wheels when towing
from
the front.
NOTICE:
Do not tow with sling-type equipment or
fascidfog lamp damage will occur. Use wheel-lift
or car-carrier equipment. Additional ramping
may be required for car-carrier equipment. Use
safety chains and wheel straps.
Towing a vehicle over rough surfaces could
damage a vehicle. Damage can occur from vehicle
to ground or vehicle to wheel-lift equipment. To
help avoid damage, install
a towing dolly and
raise the vehicle until adequate clearance is
obtained between the ground and/or
wheel-lift equipment.
Do not attach winch cables or J-hooks to
suspension components when using car-carrier
equipment. Always use T-hooks inserted in the
T-hook slots.
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Downloaded from www.Manualslib.com manuals search engine Rear Towing
Tow Limits -- 35 mph (56 kh), 50 miles (80 km)
Vehicles with the all-wheel drive or four-wheel drive
with the electronic transfer case option must use a
towing
dolly under the front wheels when towing from
the reaE
k3?
NOTICE:
Do not tow with sling-type equipment or rear
bumper valance damage will occur. Use wheel-lift
or car-carrier equipment. Additional ramping
may be required for car-carrier equipment. Use
safety chains and wheel straps.
Towing
a vehicle over rough surfaces could
damage a vehicle. Damage can occur from vehicle
to ground or vehicle to wheel-lift equipment.
Unless you have all-wheel drive, to help avoid
damage, install
a towing dolly and raise the
vehicle until adequate clearance is obtained
between the ground and/or wheel-lift equipment.
Do not attach winch cables or J-hooks to
suspension components when using car-carrier
equipment. Always use T-hooks inserted in the
T-hook slots.
5-11