Other information:
Inspection
1.
Turn ignition switch OFF.
2.
Remove the air cleaner assembly.
(Refer to Engine Mechanical System - "Air cleaner")
3.
Disconnect the solenoid valve connector (A).
...
Your vehicle will need service more often when you regularly pull a trailer.
Important items to pay particular attention to include engine oil, transmission
fluid, axle lubricant and cooling system fluid. Brake condition is another important
item to frequently check. Each item is covered in this ...