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 on page 9‑112. Added electrical equipment may interfere with the operation of the OnStar system and cause it to not operate.
See also:
Weight of the Trailer
How heavy can a trailer safely be? Speed, altitude, road grades, outside temperature,
special equipment, and the amount of tongue weight the vehicle can carry must be
considered. See “Weight of ...
Driving on Hills
Driving safely on hills requires good judgment and an understanding of what the vehicle can and cannot do.
WARNING
If the vehicle has the two-speed automatic transfer case, shifting the transfer cas ...
How to Add Coolant to the Coolant Surge Tank for Gasoline Engines
If the vehicle has a diesel engine, see “Cooling System” in the Duramax Diesel Supplement for the proper coolant fill procedure.
WARNING
You can be burned if you spill coolant on hot engine part ...