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 vehicle is equipped with the Tire Pressure Monitoring
System. If a diagnostics check is needed between e-mails, press
, and an Advisor can run a check.
Connections
OnStar Additional InformationReporting Safety Defects to General Motors
In addition to notifying NHTSA (or Transport Canada) in a situation like this,
notify General Motors.
Call 1-800-222-1020, or write:
Chevrolet Motor Division
Chevrolet Customer Assistance
Center
P.O. Box 33170
Detroit, MI 48232-5170
In Canada, call 1-800-263-3777
(English) or 1-800-263-785 ...
Battery Negative Cable Disconnection and Reconnection
Removal Procedure
Turn on the radio and record all of the customer radio station presets.
Ensure that all lamps and accessories are turned off.
Turn the ignition OFF and remove the ignition key.
Warning: Refer to Battery Disconnect Warning in the Preface section.
Loosen the negati ...
Removal Procedure
Warning: Refer to Approved Equipment for Collision Repair Warning in the
Preface section.
Warning: Refer to Glass and Sheet Metal Handling Warning in the Preface section.
Disable the SIR System. Refer to SIR Disabling
and Enabling.
Disconnect the negative battery cable. Refer to Batter ...