GMC 2001 Sonoma Owner's Manual page 94

NOTICE:
Your engine is designed to work with the
electronics in your vehicle. If you add electrical
parts or accessories, you could change the way
the engine operates. Before adding electrical
equipment, check with your dealer. If you don't,
your engine might not perform properly.
Engine Coolant Heater (If Equipped)
In very cold weather, 0 _ F (
coolant heater can help. You'll get easier starting and
better fuel economy during engine warm
the coolant heater should be plugged in a minimum of
four hours prior to starting your vehicle. If you have the
2200 L4 (VIN Code 5) engine and are using ethanol
-
(E 85) fuel with 70% or more ethanol in very cold
weather, the use of the engine coolant heater is
important. For more information, see "Fuel E
in the Index.
18 _ C) or colder, the engine
-
-
up. Usually,
-
85"
To Use the Engine Coolant Heater
1. Turn off the engine.
2. Open the hood and unwrap the electrical cord.
The cord is located on the driver's side of the engine
compartment, behind the underhood fuse block.
3. Plug it into a normal, grounded 110
CAUTION:
Plugging the cord into an ungrounded outlet
could cause an electrical shock. Also, the wrong
kind of extension cord could overheat and cause
a fire. You could be seriously injured. Plug the
cord into a properly grounded three
-
110 volt AC outlet. If the cord won't reach, use a
- -
heavy duty three prong extension cord rated for
at least 15 amps.
-
volt AC outlet.
-
prong
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