Avalanche, Sierra, Silverado, C&K Series, 1999-2005

Adjustments

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Idle Speed



On gasoline engines, the idle speed is maintained by the Powertrain Control Module (PCM). No adjustment is necessary or possible.

On Diesel engines the idle speed and injection timing is controlled by the PCM. There is no provision for adjustment.

Idle speed is maintained by the Powertrain Control Module (PCM). No adjustment is necessary or possible.

Idle speed is maintained by the Powertrain Control Module (PCM). No adjustment is necessary or possible.

Idle speed is maintained by the Powertrain Control Module (PCM). No adjustment is necessary or possible.

 
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