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Old 06-26-2016, 05:14 PM   #84
BigRed76
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Join Date: Jan 2010
Location: Loveland, CO
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Re: 72 GMC Longbed Duramax Swap

Have you checked for any codes in the ecm? Maybe trying to start the engine without the proper circuits powered caused a code to set preventing starting.
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1970 Chevrolet Custom Camper K20
1971 GMC Super K2500, 12V/NV4500 swap in progress
1971 Chevrolet Custom C10
1972 Chevrolet Custom Deluxe C20, 5.3/4L60E
1972 Oldsmobile Cutlass Supreme, 455/TH400, 3.73 posi
2004 GMC Sierra 2500HD, LB7/Allison, CCSB
2005 GMC Sierra 1500, 5.3/4L60E, CCSB

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