Special Application Services
. Severe Commercial Use Vehicles Only: Lubricate chassis components every 5 000 km/3,000 mi.
- Have underbody flushing service performed once a year.
See also:
Tachometer
The tachometer displays the engine speed in revolutions per minute (rpm).
Notice: If the engine is operated with the tachometer in the shaded
warning area, the vehicle could be damaged, and the da ...
Wiper Blade Replacement
Windshield wiper blades should be inspected for wear or cracking. See Maintenance
Schedule .
Replacement blades come in different types and are removed in different ways. ...
Multi-Band Antenna
The multi-band antenna is on the roof of the vehicle. The antenna is used
for the AM—FM radio, OnStar, the XM Satellite Radio Service System, and GPS
(Global Positioning System), if the vehicle has ...






