OnStar Description and Operation (UE1 with IOB/IO6)
This OnStar system consists of the following components:
Telematics communication interface control module
OnStar three button assembly
Micr
DTC B0997
Diagnostic Instructions
Perform the Diagnostic System Check - Vehicle prior to using this
diagnostic procedure.
Review Strategy Based Diagnosis for an overview of the diagnostic
appro
AUTOMATIC HVAC DESCRIPTION AND OPERATION
The air temperature and the air delivery description and operation are
divided into eight areas:
HVAC Control Components
Air Speed
Air Delivery
Heating and A/C Operation
Recirculation Operation
Automatic Operation
Engine Coolant and A/C System Refrig
Park Brake Calibration
The park brakes do not require calibration often. Park brake calibration may
be required after certain
service procedures are performed. Some of these procedures are as follows:
Park brake actuator replacement.
Rear brake pad replacement.
Rear brake rotor replacement.
Re