Add-on Electrical Equipment
The OnStar system is integrated into the electrical architecture of the vehicle. Do not add any electrical equipment. See Add-On Electrical Equipment. Added electrical equipment may interfere with the operation of the OnStar system and cause it to not operate.
See also:
What to Use
To determine what kind of fluid to use, see
Recommended Fluids and Lubricants.
Always use the proper fluid.
Notice: Use of the incorrect fluid may damage the
vehicle and the damages may not be c ...
Bulb Replacement
For the proper type of replacement
bulbs, see Replacement Bulbs.
For any bulb changing procedure
not listed in this section, contact
your dealer. ...
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. ...