2005 Buick ParkAvenue Owners Manual PDF | Page 236

Your vehicle may have an airbag system. If it does, see
Servicing Your Airbag-Equipped Vehicle on page 1-57
before attempting to do your own service work.
You should keep a record with all parts receipts and list
the mileage and the date of any service work you
perform. See Part E: Maintenance Record on page 6-27.
You can be injured and your vehicle could be
damaged if you try to do service work on a
vehicle without knowing enough about it.
? Be sure you have sufficient knowledge,
experience, the proper replacement parts
and tools before you attempt any vehicle
maintenance task.
? Be sure to use the proper nuts, bolts and
other fasteners. English and metric
fasteners can be easily confused. If you
use the wrong fasteners, parts can later
break or fall off. You could be hurt.
Adding Equipment to the Outside of
Your Vehicle
Things you might add to the outside of your vehicle can
affect the air?ow around it. This may cause wind noise
and affect windshield washer performance. Check with
your dealer before adding equipment to the outside of
your vehicle.
The 8th digit of your vehicle identi?cation number (VIN)
shows the code letter or number that identi?es your
engine. You will ?nd the VIN at the top left of the
instrument panel. See Vehicle Identi?cation
Number (VIN) on page 5-91.
Gasoline Octane
If your vehicle has the 3800 V6 engine (VIN Code K),
use regular unleaded gasoline with a posted octane of 87
or higher. If the octane is less than 87, you may get a
heavy knocking noise when you drive. If this occurs, use
a gasoline rated at 87 octane or higher as soon as
possible. Otherwise, you might damage your engine. A
little pinging noise when you accelerate or drive uphill is
considered normal. This does not indicate a problem
exists or that a higher-octane fuel is necessary. If you are
using 87 octane or higher-octane fuel and you hear heavy
knocking, your engine needs service.