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Old 04-29-2019, 12:55 AM   #7 (permalink)
Diesel Expert
Join Date: Jan 2008
Location: SW ONT
Posts: 2,803

The alternator capacities being installed in these trucks has increased greatly over the years.

FWIW, the currently offered combinations are:
Standard - 150A
Optional - 220A (included with snowplow prep on gas or diesel)
Optional duals - one of each (and only available on dmax)
2018 L5P Sierra 4x4 SB Denali
Sold 2011 LML Sierra 4x4 CCSB SLT
Sold 2010 LMM Sierra 4x4 CCSB SLT
Sold 2004.5 LLY Sierra 4x4 ECLB SLE
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