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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1320 (Cruise Control System) >> Description and Operation >> Cruise Control Description and Operation >> Servo Description

Servo Description

WARNING: This page is about a different car, the 2004 Pontiac Vibe. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Cruise Control Servo Cover & Tabs
GM844775Courtesy of GENERAL MOTORS CORP.

The servo (1) is behind the air cleaner and is mounted to the left strut tower and lower frame rail, the servo consists of a DC servo motor, a worm gear, a throttle angle sensor (potentiometer) and a magnetic clutch. Acting in response to signals from the cruise control module, the servo's DC servo motor actuates the accelerator cable to increase and decrease throttle angle.