Chevrolet 1994 Blazer Owner's Manual page 196

Don't tow a trailer at all during the first 500 miles (800 km) your new
vehicle is driven. Your engine, axle or other parts could be damaged.
Then, during the first 500 miles (800 km) that you tow a trailer, don't
drive over 50 mph (80 km/h) and don't make starts at full throttle. This
helps your engine and other parts of your vehicle wear in at the heavier
loads.
Three important considerations have to do with weight:
Weight of the Trailer
How heavy can a trailer
safely
be?
It
depends on how you plan to use your rig. For example, speed, altitude,
road grades, outside temperature and how much your vehicle
is
used to pull
a trailer are all important. And, it can also depend on any special equipment
that you have on your vehicle.
You can ask your dealer for our trailering information or advice, or you can
write us at the address listed in your Warranty and Owner Assistance
Information Booklet.
In Canada, write to General Motors of Canada Limited, Customer
Assistance Center, 1908 Colonel Sam Drive, Oshawa, Ontario LlH 8P7.
Weight of the Trailer Tongue
The tongue load (A) of any trailer is an important weight to measure
because it affects the total or gross weight of your vehicle. The gross vehicle
weight (GVW) includes the curb weight of the vehicle, any cargo you may
carry in it, and the people who will be riding in the vehicle. And if you will
tow
a
trailer, you must add the tongue load to the GVW because your
vehicle will be carrying that weight, too. See "Loading Your Vehicle" in the
Index for more information about your vehicle's maximum load capacity.
B
A
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