6-4
Be sure the posted octane for premium is at least 91
(at least 87 for regular). If the octane is less than 87,
you may get a heavy knocking noise when you drive.
If it's bad enough, it can damage your engine.
If you're using fuel rated at the recommended octane or
higher and you hear heavy knocking, your engine needs
service. But don't worry if you hear a little pinging
noise when you're accelerating or driving up a hill.
That's normal, and you don't have to buy a higher
octane fuel to get rid of pinging. It's the heavy, constant
knock that means you have a problem.
If your vehicle is certified to meet California Emission
Standards (indicated on the underhood emission control
label), it is designed to operate on fuels that meet
California specifications. If such fuels are not available
in states adopting California emissions standards,
your vehicle will operate satisfactorily on fuels meeting
federal specifications, but emission control system
performance may be affected. The malfunction indicator
lamp on your instrument panel may turn on and/or your
vehicle may fail a smog
-check test. See ªMalfunction
Indicator Lampº in the Index. If this occurs, return to
your authorized Catera dealer for diagnosis to determine
the cause of failure. In the event it is determined that the
cause of the condition is the type of fuels used, repairs
may not be covered by your warranty.Some gasolines that are not reformulated for low
emissions may contain an octane
-enhancing additive
called methylcyclopentadienyl manganese tricarbonyl
(MMT); ask your service station operator whether or
not the fuel contains MMT. General Motors does not
recommend the use of such gasolines. If fuels containing
MMT are used, spark plug life may be reduced and your
emission control system performance may be affected.
The malfunction indicator lamp on your instrument
panel may turn on. If this occurs, return to your
authorized Catera dealer for service.
To provide cleaner air, all gasolines in the United States
are now required to contain additives that will help
prevent deposits from forming in your engine and
fuel system, allowing your emission control system to
function properly. Therefore, you should not have
to add anything to the fuel. In addition, gasolines
containing oxygenates, such as ethers and ethanol, and
reformulated gasolines may be available in your area to
contribute to clean air. General Motors recommends that
you use these gasolines, particularly if they comply with
the specifications described earlier.
6-7
CAUTION:
If you get gasoline on yourself and then
something ignites it, you could be badly burned.
Gasoline can spray out on you if you open the
fuel filler cap too quickly. This spray can happen
if your tank is nearly full, and is more likely in
hot weather. Open the fuel filler cap slowly and
wait for any ªhissº noise to stop. Then unscrew
the cap all the way.
Be careful not to spill gasoline. Clean gasoline from
painted surfaces as soon as possible. See ªCleaning the
Outside of Your Vehicleº in the Index.When you put the cap back on, turn it to the right
(clockwise) until you hear a clicking sound. Make sure
you fully install the cap. The diagnostic system can
determine if the fuel cap has been left off or improperly
installed. This would allow fuel to evaporate into the
atmosphere. See ªMalfunction Indicator Lampº in
the Index.
The FUEL CAP light will come on if the fuel cap is not
properly reinstalled.
NOTICE:
If you need a new cap, be sure to get the right
type. Your dealer can get one for you. If you get
the wrong type, it may not fit properly. This may
cause your malfunction indicator lamp to light
and your fuel tank and emissions system may be
damaged. See ªMalfunction Indicator Lampº in
the Index.
6-64 Wheel Bolt Torque
80 lb-ft (110 N´m)
Engine Specifications
Displacement 181 cubic inches (2 962 cc). . . . . . . . .
Type 3.0 L DOHC V6. . . . . . . . . . . . . . . . . . . . . . . . .
VIN Engine Code R. . . . . . . . . . . . . . . . . . . . . . . . . . .
Horsepower 200 (bhp) @ 6000 rpm. . . . . . . . . . . . . .
149 (kW) @ 6000 rpm
Torque 192 (lb
-ft) @ 3600 rpm . . . . . . . . . . . . . . . . .
260 (N´m) @ 3600 rpm
Firing Order 1
-2-3-4-5-6 . . . . . . . . . . . . . . . . . . . . . .
Thermostat Starts To Open 198F (92C) . . . . . . . . .
Normal Maintenance
Replacement Parts
Air Filter Element 90512851. . . . . . . . . . . . . . . . . . .
Fuel Filter Element 90542540. . . . . . . . . . . . . . . . . .
Engine Oil Filter 9118851. . . . . . . . . . . . . . . . . . . . .
Passenger's Compartment Air Filter 9192320. . . . . .
Spark Plugs 90541059. . . . . . . . . . . . . . . . . . . . . . . .
(Bosch Plug = FLR9LTE)
Windshield Wiper Blades 9118382 (RH). . . . . . . . . . .
9118381 (LH)
Vehicle Dimensions
Wheel Base 107.5 inches (273.0 cm). . . . . . . . . . . . .
Length 192.4 inches (492.8 cm). . . . . . . . . . . . . . . . .
Height 56.4 inches (143.2 cm). . . . . . . . . . . . . . . . . . .
Width 70.3 inches (178.6 cm). . . . . . . . . . . . . . . . . . .
Front Tread 59.3 inches (150.6 cm). . . . . . . . . . . . . . .
Rear Tread 59.8 inches (152.0 cm). . . . . . . . . . . . . . .
