dirtymax35
10-17-2007, 09:00 PM
I just bought an 04 duramax but I do not know if it is an 04 or 04.5 how can I tell the difference? Also can I put a chip in it without messing up the tranny?
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8100 Power 10-17-2007, 09:08 PM The 8th space has a "2" in your VIN Number... As for tuners. Not much more than ~90HP or so, Depends on how you drive you truck etc...:) Nathan Muthler 10-17-2007, 09:34 PM if the eigth digit in the vin is a 1 then its an 04 LB7. If its a two then its an 04.5 LLY. | ||