Table of Contents
Advertisement
The maximum loaded trailer weight which
you can pull with your vehicle depends on what
special equipment has been installed. GMC
does not recommend towing any trailer OVER
1,000 POUNDS GROSS TRAILER WEIGHT
unless the vehicle HAS THE REQUIRED
EQUIPMENT. Information on trailer hauling
capabilities, special equipment required, and
optional equipment offered can be obtained by
writing to GMC Truck & Coach Division, Gen-
eral Motors Corporation, Technical Service
Department, Pontiac, Michigan 48053 (or in
Canada, by writing to General Motors of Can-
ada Limited, Owner Relations Department,
Oshawa, Ontario LIJ 5Z6) .
To assist in attaining good handling of the
Vehicle Trailer Combination, it is important
that the trailer tongue load be maintained at
approximately 10 % of the loaded trailer weight .
Tongue loads can be adjusted by proper distri-
bution of the load in the trailer, and can be
checked by weighing separately the loaded
trailer and then the tongue.
When towing trailers, tires should be inflated
to the highest inflation pressures shown on tire
placard located on glove box door. The allow-
able passenger and cargo load (GVW) of this
vehicle is reduced by an amount equal to the
trailer tongue load on the trailer hitch.
MAINTENANCE
More frequent vehicle maintenance is required
when being used to pull a trailer . Refer to
"SERVICE and MAINTENANCE" section in
this manual.
BREAK-IN SCHEDULE
In addition to the "New Vehicle Operating
Speeds" given later in this section, it is recom-
mended, that your new vehicle be operated for
500 miles before trailer towing. If it is necessary
to tow during this period, avoid speeds over
50 MPH, and full throttle starts.
CAUTIONS
1 . Trailer brakes are required on trailers
over 1,000 lbs. loaded weight .
2 . DO NOT tap into vehicle's hydraulic
brake system
if operation
of the
trailer brake system requires more
than 0.02 cu .-in . of fluid displace-
ment from the vehicle's master cyl-
inder. The vehicle's master cylinder
fluid capacity will not be sufficient to
operate
both
vehicle
and
trailer
brakes under all conditions of use if
more than 0.02 cu .-in . of fluid dis-
placement is required .
3 . Whenever a trailer hitch is removed,
be certain to have any mounting
holes in underbody properly sealed
to prevent possible entry of exhaust
fumes, dirt or water. (See "ENGINE
EXHAUST GAS CAUTION" in the fol-
lowing section.)
OPERATION IN
FOREIGN COUNTRIES
Your vehicle's engine is designed to operate
on unleaded fuel of approximately 91 research
octane number.
If you plan to operate your vehicle outside
the continental limits of the United States or
Canada, there is a possibility that the best fuels
available are so low in anti-knock quality that
excessive knocking and serious engine damage
may result from their use. To obtain informa-
tion on the quality of fuels available in the
countries in which you plan to travel write to
GMC Truck & Coach Division, General Motors
Corporation, Pontiac, Michigan 48053 (or in
Canada write to General Motors of Canada
Limited, Owner Relations Department, Oshawa,
Ontario), giving :
The vehicle identification number (from
plate attached to right side of dash panel or
from the registration slip or title) .
The country or countries in which you plan
to travel .
It is recommended that you do not operate
your vehicle in any country not having fuels
meeting the requirements of your vehicle's en-
gine as these MAY CAUSE ENGINE DAM-
AGE for which GMC Truck & Coach is not
responsible under the terms of the New Vehicle
Warranty or Emission Control Systems War-
ranty.
Advertisement
Table of Contents
