General Information

The instrument cluster serves as the primary interface for the vehicle' 5 driver.

The instrument cluster communicates with other major electronic components over a class 2 serial data line. The instrument cluster used in this vehicle is either a base or an uplevel (UB7). The following is a list of instrument cluster functions:
^ Speedometer
^ Engine RPM (Tachometer)
^ PRNDL
^ English/Metric Display
^ Fuel Level
^ Odometer Display
^ Driver Information Center (DIC) Display (W/UB7)

The instrument cluster has the capability to diagnose malfunctions in the following the cluster controls or to which the cluster communicates:
^ The sensors
^ The input switches
^ The components
^ The systems

When the instrument cluster or other microprocessor-controlled module, detects a malfunction, the cluster may turn on an instrument cluster indicator or request/display a message to the Driver Information Center (DIC). This alerts the driver that a malfunction has occurred. Some indicator lamps and instrument cluster messages have dual controls.

For a description of the RPO Code(s) shown in this article refer to the RPO Code List found at Vehicle/Application ID RPO Codes