Sentry Key Immobilizer System

The Sentry Key Immobilizer System (SKIS) is available as a factory-installed option on this vehicle. Vehicles equipped with the Vehicle Theft Alarm (VTA) are also equipped with SKIS. The SKIS provides passive vehicle protection by preventing the engine from operating unless a valid electronically encoded key is detected in the ignition lock cylinder. The SKIS used in combination with the export premium version of the VTA adds a steering shaft lock feature that provides passive protection by preventing the vehicle from being steered unless a valid electronically encoded key is detected in the ignition lock cylinder, but is only available in vehicles manufactured for sale in certain markets where it is required equipment.

The SKIS includes the following major components, which are described in further detail elsewhere in this service information:

• Security Indicator (4)  - A security indicator is integral to the Electromechanical Instrument Cluster (EMIC) (also known as the Cab Compartment Node/CCN). Refer to DESCRIPTION .
• Sentry Key Remote Entry Module (5)  - The Sentry Key Remote Entry Module (SKREEM) (also known as the Wireless Control Module/WCM) is located on the instrument panel to the right side of the steering column near the ignition lock cylinder housing and an integral molded plastic antenna ring circles the ignition lock cylinder like a halo. The SKREEM and its antenna are concealed beneath an ignition switch bezel on the instrument panel. See DESCRIPTION .
• Sentry Key Transponder  - The Sentry Key transponder is contained within the Remote Keyless Entry (RKE) transmitter integral to the head of the ignition key. See DESCRIPTION .
• Shaft Lock Module (3)  - A shaft lock module is located in a bracket integral to the lower end of the steering column casting below the instrument panel in the passenger compartment of vehicles built for sale in certain export markets where it is required equipment.