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Discussion Starter #1
Hey guys, I have a 2000 pete with a cat motor that peterbilt says came factory with a 6nz, but I can't verify it. The sticker is gone and it's not on the ecm. I have attached what we pulled off the ecm. Its a twin v belt setup and has c-15 covers. I know it's supposed to be etched somewhere on the passenger side block but no one can tell me exactly where.
 

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Junior Member
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Discussion Starter #2
Ok, it won't let me upload or log in from phone so here it is
Vehicle I'd 533913n
Engine serial not programmed
Ecm serial number 33890117ka
Personality module part number 2707067-00
Personality module release date may05
Personality module code 6
 

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Junior Member
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Using the last six of the Pete serial number, it come up with 6NZ03504.
6NZ03504 has a build date of 1999-12-19
533913 has a build date of 2000-01-05
Build dates look correct. I found a ECM download from 2007. Lists off 25819hrs on the engine. Model is described as 379 daycab. Pete factory records show it as a daycab.
I would like to believe that engine is factory.
The serial number should be below number 5 exhaust etched into the block. Paint will need to be removed and the block cleaned up. Sometimes very hard to see.
 
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