Chevrolet 2006 HHR Owner's Manual page 227

What is the worst time for this? Wet ice. Very cold snow
or ice can be slick and hard to drive on. But wet ice
can be even more trouble because it may offer the least
traction of all. You can get wet ice when it is about
freezing, 32°F (0°C), and freezing rain begins to fall.
Try to avoid driving on wet ice until salt and sand crews
can get there.
Whatever the condition — smooth ice, packed, blowing,
or loose snow — drive with caution.
If your vehicle has the Enhanced Traction System
(ETS), it will improve your ability to accelerate when
driving on a slippery road. Even though your vehicle has
this system, you will want to slow down and adjust
your driving to the road conditions. Under certain
conditions, you may want to turn the ETS off, such as
when driving through deep snow and loose gravel,
to help maintain vehicle motion at lower speeds.
See Enhanced Traction System (ETS) on page 4-10.
If your vehicle does not have ETS, accelerate gently.
Try not to break the fragile traction. If you accelerate
too fast, the drive wheels will spin and polish the surface
under the tires even more.
Unless your vehicle has the Anti-Lock Brake System
(ABS), you will want to brake very gently, too. If your
vehicle does have ABS, see Anti-Lock Brake System
(ABS) on page 4-7. ABS improves your vehicle's stability
when you make a hard stop on a slippery road.
Whether your vehicle has ABS or not, you will want to
begin stopping sooner than you would on dry pavement.
Without ABS, if you feel your vehicle begin to slide,
let up on the brakes a little. Push the brake pedal down
steadily to get the most traction you can.
4-27