Circuit/System Description
The camshaft position actuator solenoid valve - Intake and camshaft position
actuator solenoid valve -
exhaust system enables the engine control module (ECM) to change cams
The Engine Control Module (ECM) interacts with many emission related
components and systems, and
monitors emission related components and systems for deterioration. OBD II
diagnostics monitor the
sy
This OnStar system consists of the following components:
Telematics communication interface control module
OnStar three button assembly
Microphones
Cellular antenna
Navigation antenna
Back up battery
WiFi Support
TTY (Teletypewriter)
This system also interfaces with the factory install
Diagnostic Instructions
Perform the Diagnostic System Check - Vehicle prior to using this
diagnostic procedure.
Review Strategy Based Diagnosis for an overview of the diagnostic
approach.
Diagnostic Procedure Instructions provides an overview of each
diagnostic category.
DTC Descriptor
DT