GM Service Manual Online
For 1990-2009 cars only

Tilt\Telescoping Description

The tilt - telescoping steering column uses the same tilt lever as the non-telescoping column and functions in the same manner. The telescoping function of this column consists of the telescoping drive motor, the telescoping actuator assembly and the telescoping actuator switch. The telescoping actuator assembly is cable driven by the telescoping drive motor. The telescoping actuator switch operates the inward or outward movement of the steering wheel.

Tilt\Telescoping Operation

The telescoping steering column in/out switch is an input to the seat control module. The telescoping drive motor is an output function of the seat control module. The telescoping actuator assembly is cable driven by the telescoping drive motor.

Steering column memory settings are stored in the seat control module. The steering column position sensor is an internal part of the telescoping actuator assembly, and is an input to the seat control module. The seat control module uses the position sensor input when storing and recalling memory settings.

Memory steering column, and the easy enter/exit operations are performed by the seat control module. However the left door control module assumes control when memory settings are stored and recalled, by use of the serial data link. The body control module assumes control when the easy enter/exit operation occurs, by use of the serial data link.

The body control module stores the RPO code configuration which signals to the seat control module whether or not the telescoping steering column option is active. This RPO code configuration must be correct, and received by the seat control module, or power seat, and telescoping steering column operation will be inoperative or incorrect.