2009 GMC YUKON engine

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Page 403 of 576

GMC YUKON 2009  Owners Manual This vehicle has an airbag system. Before attempting to
do your own service work, seeServicing Your
Airbag-Equipped Vehicle on page 1-96.
Keep a record with all parts receipts and list the mileage
and

Page 404 of 576

GMC YUKON 2009  Owners Manual Otherwise, you could damage the engine. If you are
using gasoline rated at 87 octane or higher and you
hear heavy knocking, the engine needs service.
Gasoline Speci�cations
At a minimum, gasoline shou

Page 405 of 576

GMC YUKON 2009  Owners Manual Gasolines containing oxygenates, such as ethers and
ethanol, and reformulated gasolines might be available in
your area. We recommend that you use these gasolines,
if they comply with the speci�cation

Page 407 of 576

GMC YUKON 2009  Owners Manual Filling the Tank
{CAUTION:
Fuel vapor burns violently and a fuel �re can
cause bad injuries. To help avoid injuries to you
and others, read and follow all the instructions on
the pump island. Turn off

Page 410 of 576

GMC YUKON 2009  Owners Manual Checking Things Under
the Hood
{CAUTION:
An electric fan under the hood can start up and
injure you even when the engine is not running.
Keep hands, clothing, and tools away from any
underhood electri

Page 412 of 576

GMC YUKON 2009  Owners Manual Engine Compartment Overview
If the vehicle is a Two-mode Hybrid, see the Two-mode Hybrid manual for more information.
When you open the hood on the 5.3L engine (4.8L, 6.0L and 6.2L similar), here is w

Page 413 of 576

GMC YUKON 2009  Owners Manual A.Engine Air Cleaner/Filter on page 5-19.
B. Coolant Surge Tank and Pressure Cap. SeeCooling
System on page 5-28.
C. Remote Positive (+) Terminal. SeeJump Starting on
page 5-45.
D.Battery on page 5-44

Page 414 of 576

GMC YUKON 2009  Owners Manual When to Add Engine Oil
If the oil is below the cross-hatched area at the tip
of the dipstick, add at least one quart/liter of the
recommended oil. This section explains what kind of
oil to use. For en