Checking Things Under The Hood - GMC 2003 Sonoma Owner's Manual

Section 5 Service and Appearance
Service ............................................................ 5. 3
Doing Your Own Service VVork
........................
-5-3
Adding Equipment to the Outside of Your
Vehicle ....................................................
- 5 - 4
Fuel ................................................................
5. 5
Gasoline Octane ........................................... -5-5
Gasoline Specifications ................................... -5-5
California Fuel
...............................................
5. 6
Additives ....................................................... 5. 6
Fuels in Foreign Countries ...... .............. 5. 6
Filling a Portable Fuel Container .....
..........
5-9
the Hood .................................................
5-10
Hood Release .......................................... 5-10
Engine Compartment Overview
...................
5-12
Engine Oil ................................................... 5-15
Engine Air CleanedFilter
................................
5-20
Automatic Transmission Fluid
.........................
5-21
Manual Transmission Fluid .............................
5-25
Hydraulic Clutch ........................................... 5-26
Engine Coolant
.........................................
5-27
Filling Your Tank
......................
..........
5-7
Checking Things Under
Radiator Pressure Cap .................................. 5.30
Engine Overheating .......................................
5-30
Cooling System
............................................
5-33
Engine Fan Noise
.........................................
5-40
Power Steering Fluid ................................... -5-41
Windshield Washer Fluid
................................
5-42
Brakes
.......................................................
-5-43
Battery ........................................................ 5-46
Jump Starting ...............................................
5-47
Rear Axle ...................................................
-5-52
Four-wheel Drive ....
~
............... 5-53
Front Axle ......................................................
5-54
Bulb Replacement ..........................................
5-55
Halogen Bulbs .............................................. 5-55
Headlamps .................................................. 5-55
One-Piece Front Turn Signal Lamps
................
5-57
Two-Piece Front Turn Signal Lamps
................
5-58
Stoplamp (CHMSL) ...........
.......... 5-59
Center High-Mounted
Taillamps ..................................................... 5-60
Replacement Bulbs
.......................................
5-60
5- 1