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:
Dinghy Towing
Front-wheel&-drive and all-wheel-drive vehicles may be dinghy towed from the
front. These vehicles can also be towed by placing them on a platform trailer with
all four wheels off of the groun ...
Engine Coolant Heater
The engine heater can provide easier starting and better fuel economy during engine warm-up in cold weather conditions at or below −18°C (0°F). Vehicles with an engine heater should be plugged ...
When to Check
Check the tires once a month or more. Do not forget the compact spare tire, if
the vehicle has one. The cold compact spare should be at 420 kPa (60 psi). For additional
information regarding the c ...





