GMC Envoy Owner's Manual page 344

Section 5
Service ............................................................5-3
Doing Your Own Service Work .........................5-4
Adding Equipment to the Outside
of Your Vehicle ...........................................5-5
Fuel ................................................................5-5
Gasoline Octane ............................................5-5
Gasoline Specifications ....................................5-5
California Fuel ...............................................5-5
Additives .......................................................5-6
Fuels in Foreign Countries ...............................5-6
Filling Your Tank ............................................5-7
Filling a Portable Fuel Container .......................5-9
Checking Things Under the Hood ....................5-10
Hood Release ..............................................5-10
Engine Compartment Overview .......................5-12
Engine Oil ...................................................5-16
Engine Oil Life System ..................................5-19
Engine Air Cleaner/Filter ................................5-20
Automatic Transmission Fluid .........................5-22
Engine Coolant .............................................5-25
Radiator Pressure Cap ..................................5-28
Engine Overheating .......................................5-28
Cooling System ............................................5-30
Service and Appearance Care
Engine Fan Noise .........................................5-35
Power Steering Fluid .....................................5-36
Windshield Washer Fluid ................................5-36
Brakes ........................................................5-37
Battery ........................................................5-41
Jump Starting ...............................................5-42
Rear Axle .......................................................5-47
Four-Wheel Drive ............................................5-48
Front Axle ......................................................5-48
Bulb Replacement ..........................................5-49
Halogen Bulbs ..............................................5-49
Headlamps, Front Turn Signal, Sidemarker,
Taillamps, Turn Signal, and Stoplamps ............5-50
Back-Up Lamps ............................................5-51
Replacement Bulbs .......................................5-51
Windshield Wiper Blade Replacement ..............5-52
Tires ..............................................................5-54
Tire Sidewall Labelling ...................................5-55
Tire Terminology and Definitions .....................5-58
Inflation - Tire Pressure .................................5-61
Tire Inspection and Rotation ...........................5-62
When It Is Time for New Tires .......................5-64
and Parking Lamps ....................................5-50
5-1