Ecm/prom question

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PlayingWithTBI

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That 6395 is what was pulled from the truck, buddy at the gm dealer confirms via vin# that it is the correct part it left the factory with. 4.3 v6 5spd truck.
After some more reading, I see the 6395 was not used with a 5.7L and manual trans, as @CrustyJunker said the 6396 was used instead. However, the more I look the more confused I get, ha ha. The 6395 and the 7427 may have interchangeable BCCs, see post #3. On post #5 it appears you can change your bin to 5.7L, I know you didn't want to do any tuning but...

Maybe you can find a BCC for a 7427 with 5.7L manual, plug it in and see what happens. YMMV

http://www.gearhead-efi.com/Fuel-In...95-7427-8625-Manual-Trans-Calibration-Listing
 
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