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 vehicle is equipped with the Tire Pressure Monitoring
System. If a diagnostics check is needed between e-mails, push
, and an Advisor can run a check.
See also:
Sewn-in Safety Belt Comfort Guide
On vehicles with the sewn-in comfort guide, there is one guide for each outboard passenger position in the rear seat.
To install a comfort guide to the safety belt:
1. Remove the guide from its st ...
First Engine Oil Change After Every
160 000 km/100,000 Miles
• Automatic transmission fluid change (normal
service). See Automatic Transmission Fluid .
• Spark plug replacement. An Emission Control
Service. ...
Courtesy Transportation Program
To enhance your ownership experience, we and
our participating dealers are proud to offer Courtesy
Transportation, a customer support program for vehicles
with the New Vehicle Limited Warranty ( ...