Battery Voltage and Charging Messages
BATTERY LOW START VEHICLE
When the vehicle’s battery is severely discharged, this message will display and four chimes will sound. Start the vehicle immediately. If the vehicle is not started and the battery continues to discharge, the climate controls, heated seats, and audio systems will shut off and the vehicle may require a jump start. These systems will function again after the vehicle is started.
SERVICE BATTERY CHARGING SYSTEM
On some vehicles, this message displays if there is a problem with the battery charging system. Under certain conditions, the charging system light may also turn on in the instrument panel cluster. See Charging System Light on page 5‑24. Driving with this problem could drain the battery. Turn off all unnecessary accessories. Have the electrical system checked as soon as possible. See your dealer.
See also:
Leaving the Vehicle with the Engine Running
WARNING
It can be dangerous to leave the vehicle with the engine running.
The vehicle could move suddenly if the shift lever is not fully in P (Park) with the parking brake firmly set. And, if you l ...
Ultrasonic Parking Assist
For vehicles with the Ultrasonic Rear Parking Assist (URPA) system, it assists
the driver with parking and avoiding objects while in R (Reverse). URPA operates
at speeds less than 8 km/h (5 mph), ...
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 vehic ...