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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1305 (Cruise Control System) >> Description and Operation >> Cruise Control Description and Operation >> Servo Description

Servo Description

WARNING: This page is about a different car, the 2003 Pontiac Vibe. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Identifying Cruise Control Servo
G01434273Courtesy 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.