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 OnStar Additional Information , and an Advisor can run a check.

    See also:

    Vehicle Overview
    As the 2004 model year began, a midsize luxury sport utility vehicle dubbed Rainier joined the Rendezvous "crossover" model in Buick's lineup. Built with full-frame construction, the Rai ...

    Battery Replacement
    To change the batteries, do the following: 1. Remove the battery compartment door located on the bottom of the remote control. 2. Replace the two AA batteries in the compartment. Make sure that ...

    How OnStar Service Works
    : This blue button connects you to a specially trained OnStar advisor to verify your account information and to answer questions. : Push this red emergency button to get priority help fro ...