Maintenance When Trailer Towing
The vehicle needs service more often when pulling a trailer. See this manual's Maintenance Schedule or Index for more information. Things that are especially important in trailer operation are automatic transmission fluid, engine oil, axle lubricant, belts, cooling system, and brake system. It is a good idea to inspect these before and during the trip.
Check periodically to see that all hitch nuts and bolts are tight.
See also:
California Perchlorate Materials Requirements
Certain types of automotive applications, such as airbag initiators, safety belt
pretensioners, and lithium batteries contained in Remote Keyless Entry transmitters,
may contain perchlorate materi ...
Diagnostics
OnStar Vehicle Diagnostics will perform a vehicle check every month. It will
check the engine, transmission, antilock brakes, and major vehicle systems. It also
checks the tire pressures, if the v ...
Using the Directory Command
The directory command lists all of the name tags stored
by the system. To use the directory command:
1. Press and hold for two seconds.
The system
responds with “Ready” followed by a tone. ...