Escalade, Suburban, Tahoe, Yukon, Denali, DenaliXL, YukonXL 1999-2005

Adjustments

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The ignition timing is controlled by the Powertrain Control Module (PCM). No adjustment is necessary or possible.

Ignition timing is controlled by the PCM. Always refer to the Vehicle Emissions Control Information label in the engine compartment for base ignition timing specification.

The ignition timing is controlled by the Powertrain Control Module (PCM). No adjustment is necessary or possible.

 
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