Vince,

  I thought I would make a contribution.  Here's what I've come up
  with....

  GM Part number: 15239857. Used on GM full size utilities starting in
  MY07 and on GM full sized trucks starting in MY08.  AC Delco PN:
  213-3837.  I found the part on Amazon of all places,


 http://www.amazon.com/ACDelco-213-3837-New-Pressure-Sensor/dp/B001DXC11E


  for about $26 shipped.  At that link there is a list of all
  vehicles that use it.  The dealer list price is about $38.  The
  sensor is used on GM's returnless fuel system and has a range of
  100-700kPa.  The mating connector is a Delphi GT150 with a GM P/N of
  19115173.  I believe you can get connectors from Newark, but I could
  not find it on their web site.  I don't know what the factory pull
  down resistor value is, but may be able to find out if you need me to.

  Hope this helps.

  Heath

 Yes, it helps.  Thanks.

 I saw this one about 2 months ago.  Equivalent to Airtex part # 5S2066
 I believe.

 I believe it is used at the fuel pump/gas tank, not under the hood
 where it gets toasty.  I am concerned that the interface to the fuel
 rail may start leaking.  In the first pic below, look at the pressure
 tap - it looks like a rubber-ish material, as opposed to a threaded
 fitting.  Those were the two reasons I passed on it at the time:
 1) non-threaded (rubber) pressure tap
 2) heat concerns

 In the second pic you can see the fuel pressure sensor on the top of
 the integrated fuel pump.  (Not the exact same model, but you get the
 idea.)

 With that said, some may choose to measure fuel pressure right at the
 tank/pump (for various reasons).  This would be okay temperature-wise,
 but the tradeoff would be 1) no possibility of MAP-referenced pressure
 readings and 2) no compensation for head pressure changes when
 climbing/diving.  (Both minor in my opinion, but still ...)

 Nice price, though.  Keep 'em coming!

 -Vince Orton

--


Vince,

I've attached a drawing of the sensor P/N that I gave you.  It is not
the same as you show.  The one you show is a fuel tank pressure sensor
which is not used for fuel pressure control.  This sensor is not
located on the fuel rail (due to the possibility of pressure
fluctuation caused by the injectors), but down stream 1-2 meters.
Still a pretty warm area....

The only thing I can suggest to account for MAP variation is to tap
into the MAP sensor signal and read it with your controller.

Heath