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Home >> GMC Truck >> 1999 >> K Yukon/Denali 4WD V8-6.5L DSL Turbo VIN S >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> A/C Signal >> Description and Operation

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.

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