The vehicle has a number of computers that record information about the vehicle’s performance and how it is driven. For example, the vehicle uses computer modules to monitor and control engine and transmission performance, to monitor the conditions for airbag deployment and deploy them in a crash, and, if equipped, to provide antilock braking to help the driver control the vehicle. These modules may store data to help the dealer technician service the vehicle. Some modules may also store data about how the vehicle is operated, such as rate of fuel consumption or average speed. These modules may retain personal preferences, such as radio presets, seat positions, and temperature settings.
Reporting Safety Defects to General Motors
Event Data RecordersAirbag Readiness Light
This light shows if there is an electrical problem with the airbag system. The
system check includes the airbag sensor(s), passenger sensing system, the pretensioners
(if equipped), the airbag modules, the wiring, and the crash sensing and diagnostic
module. For more information on the airbag ...
Exhaust Manifold Heat Shield Replacement (LUW)
Catalytic Converter Heat Shield Replacement
Callout
Component Name
Warning: Refer to Exhaust Service Warning.
Preliminary Procedures
Disconnect the negative battery cable. Refer to Battery Negative
Cable Disco ...
Throttle Actuator Control (TAC) System Description
acceleratorpedalassemblyi/pappsensor1appsensor2ignitionvoltage(ifequipped)cruisecontrolswitch(ifequipped)(ifequipped)throttlebodybcmtpsensor1tpsensorreducedenginepowerlampthrottleactuatormotor
The engine control module (ECM) is the control center for the throttle actuator
control (TAC) system. ...