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Re: 5.3 .... whats your best MPG
2008 Envoy Denali (not the XL), still has AFM active, best I've gotten was 21 highway. 4x4 3.42 gears, G80 locking diff
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'51 South Bend Model "9A"
'56 Chevy 3600 NAPCO
'74 Chevy Cheyenne Super K20-restored on 37's
'72 GMC Sierra Custom K2500- in progress
'08 GMC Envoy Denali
'12 GMC Sierra 2500HD Denali
'17 GMC Yukon XL
VCCA member #58596
http://www.nohrco.com
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