Send it all back, you have a DB 2 pump, no electronic fuel stuff. In other words a slightly less complicated engine, but much nicer without worrying about pmds and such


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Little more info, the C/K truck series, suburbans, all received electronic DS4 injection pumps starting in 1994, P vans and all naturally aspirated 6.5's remained mechanical injected,(and this is where my knowledge only goes so far) up to 1999,

A lot of information for your style engine can be derived from the 6.2 section, same basic design with a few minor changes to the wiring and such


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Oh and the intake is original , they only got the 60 degree heads when they got the turbo, to be able to center mount it


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Thanks - that what I thought, but couldn't find any mention of that possibility anywhere.


Do you know what is the part in the first photo, and why doesn't the part # work?

 

You have a "Y" engine (L57) with auto trans.
That is a baro sensor for the TCM.

 

Thanks - it that part necessary? Why doesn't the part # show up anywhere?

 

TCM uses the baro to get atmospheric pressure when the truck is started.
Not sure how critical it is.
591=type of baro - 1, 2, or 3 bar (591 is not on my list but should be 12569240 1 bar)
5243 is the production date - 243rd day of 1995

 

1995 P motor has Electronic injection.

 

I thought in the P vans it was something like the NA version was mechanical but the turbo got the DS4 at some point?

In any case his from the photos we know he has a db2.

 

P vans could(not all) have the DB2 through 95, it wasn't until 96 they went DS4 across the board to meet OBD2 requirements for US models(international models could still have the DB2 pump until later on). The BARO sensor like posted above is there for shifting. It is there to tell the TCM altitude so it knows not to bog the engine down at higher altitudes to keep it from smoking. At sea level you have more oxygen in the intake charge which allows it to stay at lower RPM's without smoking. At higher altitudes there is less oxygen, so it holds the shifts out longer to prevent smoking.