GMC Workshop Service and Repair Manuals > K 3500 Truck 4WD V8-6.5L DSL Turbo VIN S (1999) > Powertrain Management | Computers and Control Systems | A/C Signal | Component Information | Description and Operation

Accelerator Pedal Position Sensor > < Valve Clearance|Specifications|Page 4094

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A/C Signal: Description and Operation

This signal indicates that the A/C compressor clutch is engaged. The PCM uses this signal to adjust the idle speed.

Powertrain Management
Computers and Control Systems
A/C Signal
Component Information
Description and Operation

Accelerator Pedal Position Sensor > < Valve Clearance|Specifications|Page 4094