To Use The Engine Coolant Heater - GMC SIERRA DENALI 2002 Manual

When starting your engine in very cold weather
(below 0 _ F or 18 _ C), do this:
-
1. With your foot off the accelerator pedal, turn the ignition
key to START and hold it there up to 15 seconds.
When the engine starts, let go of the key.
2. If your engine still won't start (or starts but then
stops), it could be flooded with too much gasoline.
Try pushing your accelerator pedal all the way to
the floor and holding it there as you hold the key in
START for about three seconds. When the engine
starts, let go of the key and accelerator. If the vehicle
starts briefly but then stops again, do the same thing,
but this time keep the pedal down for five or six
seconds. This clears the extra gasoline from the engine.
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.
2-18
Engine Coolant Heater (If Equipped)
Usually, the coolant heater should be plugged in a
minimum of four hours prior to starting your vehicle.
At temperatures above 32 _ F (0 _ C), use of the
coolant heater is not required.

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, near the power steering fluid reservoir.
In very cold weather,
0 _ F ( 18 _ C) or colder,
-
the engine coolant heater
can help. You'll get
easier starting and better
fuel economy during
-
engine warm up.