The vehicle must be on a level surface when checking the coolant level.
It is normal to see coolant moving in the upper coolant hose return line when the engine is running.
Check to see if coolant is visible in the coolant surge tank. If the coolant inside the coolant surge tank is boiling, do not do anything else until it cools down.

If coolant is visible but the coolant level is not at or above the mark pointed to, add a 50/50 mixture of clean drinkable water and DEX-COOL coolant.
Be sure the cooling system is cool before this is done.
What to Use
How to Add Coolant to the Coolant Surge TankTaillamps, Turn Signal, Stoplamps, and Back-Up Lamps
Stoplamp/Taillamp
Turn Signal Lamp/Taillamp
Back-up Lamp
To replace a taillamp, turn signal lamp, stoplamp, or back-up bulb:
Open the liftgate. See Liftgate on page 2-8.
Remove the two screws and the lamp assembly.
Turn the bulb socket counterclockwise and remove the so ...
Exterior Lamp Controls
The exterior lamp control is on the turn signal lever on the left side of the
steering column.
There are four positions:
(Headlamps): Turns on the headlamps
together with the parking lamps and instrument panel lights.
(Parking Lamps): Turns on the parking
lamps including all lamps, exce ...
New Vehicle Break-In
Caution
The vehicle does not need an elaborate break-in. But it will perform
better in the long run if you follow these guidelines:
Do not drive at any one constant speed, fast or slow, for
the first 805 km (500 mi).
Do not make full-throttle starts. Avoid downshifting to brake or slow t ...