Just a followup, figured this one out. It was tune related!
I had the option turned on to run the fans for two minutes after key-off if the coolant was above 185. Now I know why the factory kept this option disabled, as it would keep the BCM powered up even after the fans shut down. Hell the BCM would stay powered up even if it didn't command the fans to run after key-off. Set it back to the factory temp setting of 255 (disabled) and all problems fixed.
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1998 Z-28 - SLP lid - Ported TB - LS6 Intake - Dynatech SS headers/Catted Y - Magnaflow Exh - 3.42 - Yank SS3600 - UMI weld-in subframe connectors, Adj LCA, Adj PHB, Q1A TA - Bolt-in Relocation Brackets - Strano springs - Koni shocks - 17" C6Z06 wheels - 326HP/335ft-lbs - 12.35 @ 110.41
Quote:
Originally Posted by Blackbirdws6
I can appreciate a dream but this person needed some real friends.
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