Escalade, Suburban 1500 & 2500, Tahoe, Yukon, Yukon XL 1500 & 2500 (2006-2007), Yukon Denali and Yukon Denali XL (2005-2006)

Adjustments

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

 
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