2007 CHEVROLET IMPALA hood open

If No Steam Is Coming From
Your Engine
An overheat warning can indicate a serious
problem.
If you get an engine overheat warning but see or
hear no steam, the problem may not be too
serious. Sometimes the engine can get a little too
hot when you:
Climb a long hill on a hot day.
Stop after high-speed driving.
Idle for long periods in traffic.
Tow a trailer.
If an overheat warning occurs without any sign of
steam, try this for a minute or so:
1. In heavy traffic, let the engine idle in
NEUTRAL (N) while stopped. If it is safe to do
so, pull off the road, shift to PARK (P) or
NEUTRAL (N) and let the engine idle.
2. Set the heater at the highest setting and the
fan at the highest speed and open the
windows as necessary.If the overheat warning no longer exists, the
vehicle can be driven. Just to be safe, drive slower
for about 10 minutes. If the warning does not
come back on, the vehicle can be driven normally.
If the warning continues, and you have not
stopped, pull over, stop, and park the vehicle
right away.
If there is still no sign of steam, idle the engine
for three minutes while parked. If the warning
is still there, turn off the engine and get everyone
out of the vehicle until it cools down. Also, see
“Overheated Engine Protection Operating Mode”
later in this section.
You may decide not to lift the hood but to get
service help right away.
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Notice:Ignoring these steps could result in
costly damage to your vehicle that would
not be covered by your warranty.
Trying to start your vehicle by pushing or
pulling it will not work, and it could damage
your vehicle.
1. Check the other vehicle. It must have a
12-volt battery with a negative ground system.
Notice:If the other vehicle’s system is not a
12-volt system with a negative ground,
both vehicles can be damaged. Only use
vehicles with 12-volt systems with negative
grounds to jump start your vehicle.
2. Get the vehicles close enough so the jumper
cables can reach, but be sure the vehicles are
not touching each other. If they are, it could
cause a ground connection you do not want.
You would not be able to start your vehicle, and
the bad grounding could damage the electrical
systems.
To avoid the possibility of the vehicles rolling,
set the parking brake rmly on both vehicles
involved in the jump start procedure. Put an
automatic transaxle in PARK (P) or a manual
transaxle in NEUTRAL before setting the
parking brake.Notice:If you leave your radio or other
accessories on during the jump starting
procedure, they could be damaged. The repairs
would not be covered by your warranty.
Always turn off your radio and other
accessories when jump starting your vehicle.
3. Turn off the ignition on both vehicles.
Unplug unnecessary accessories plugged into
the cigarette lighter or the accessory power
outlets. Turn off the radio and all lamps
that are not needed. This will avoid sparks
and help save both batteries. And it could
save the radio!
4. Open the hoods and locate the batteries.
Find the positive (+) and negative (−)
terminal locations on each vehicle.
You will not need to access your battery for
jump starting. Your vehicle has a remote
positive (+) jump starting terminal for that
purpose. The remote positive (+) terminal is
located in the engine compartment on the
passenger’s side of the vehicle, on the
underhood fuse block. SeeEngine
Compartment Overview on page 306
for more information on location.
339

To replace one of these bulbs:
1. Open the hood. SeeHood Release on
page 305for more information.
2. Remove the screw from the headlamp
assembly.3. Remove the headlamp plastic retainer by
pulling it up.
4. Pull the headlamp assembly away from the
vehicle and remove the electrical connector.
5. Remove the round dust caps to gain access
to the bulbs.
6. Turn the old bulb counterclockwise and
remove it from the retaining ring by pulling
it away from the headlamp.
7. Remove the electrical connector from the bulb
by raising the lock tab and pulling the
connector away from the bulb’s base.
345

G
Gage
Engine Coolant Temperature.................... 184
Fuel......................................................... 190
Speedometer........................................... 176
Tachometer.............................................. 176
Garage Door Opener................................... 133
Gasoline
Octane..................................................... 298
Specications........................................... 299
Glove Box................................................... 144
GM Mobility Reimbursement Program.......... 431
H
Hazard Warning Flashers............................ 152
Head Restraints............................................ 13
Headlamp
Aiming..................................................... 343
Headlamp Wiring......................................... 397Headlamps
Bulb Replacement.................................... 343
Daytime Running Lamps/Automatic
Headlamp System................................ 162
Delayed................................................... 162
Exterior Lamps......................................... 160
Flash-to-Pass........................................... 155
Halogen Bulbs......................................... 344
Headlamps, Front Turn Signal,
Sidemarker, and Parking Lamps ........... 344
High/Low Beam Changer......................... 155
Heated Seats................................................ 10
Heater......................................................... 168
Highbeam On Light..................................... 189
Highway Hypnosis....................................... 270
Hill and Mountain Roads............................. 270
Hood
Checking Things Under............................ 304
Release................................................... 305
Horn............................................................ 152
How to Use This Manual................................ 4
How to Wear Safety Belts Properly............... 23
451