Pontiac 25111873 Module Asm,Cruise Control

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Cruise control maintains a set vehicle speed in normal driving conditions. It mainly uses vacuum to run a throttle servo, overseen by the Cruise Control Module (CCM). Features include cruise, coast, resume/accelerate, and "tap up/down" speed adjustments. Activation typically starts above 25 mph (40 kph). Key components are mode switches, CCM, servo unit, Vehicle Speed Sensor (VSS), vacuum supply, release switches, and harnesses. The system retains vacuum at the set position, with the controller managing three vehicle/system states. Components include the vacuum servo, EMC Controller/Actuator, Electronic Module, and VSS, supplemented by a Vacuum Accumulator for consistent performance.

Disconnect the wiring harness from the module, remove the bracket and module assembly from the accelerator bracket, release the lock tab, and remove the module.

The system includes a servo unit connected to the intake manifold, a speedometer cable-driven regulator, and various switches.