Service Bulletins
Service Bulletins give additional technical service information needed to knowledgeably service General Motors cars and trucks.
Each bulletin contains instructions to assist in the diagnosis and service of the vehicle.
See also:
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. ...
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 ...
Ignition Transmission Lock Check
While parked, and with the parking brake set, try to turn the ignition to LOCK/OFF
in each shift lever position.
The ignition should turn to LOCK/OFF only when the shift lever is in P
(Park). ...






