Re: dilema
Your tuner is right about the crank sensor. It's a crankshaft position sensor relearn that needs to be done, very easy to do with the GM scan tool so I'm not sure why the dealer couldn't figure it out. I know you can do it with most of the newer Snap-On scan tools too.
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Zach
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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