fuel pump

[G.R. Morton]

which fuel pump?  2004 Silverado WT 4.3l  vin 1GCEC14X34Z137218

[CamGTP]

How much looking did you do prior to this post?

 

You need to know what RPO code you have for the EVAP/Fuel system first. If you have RPO code K53 you need a different pump than a non K53 rpo coded vehicle.

 

So open your glove box and look at the RPO sticker in there.

 

AC Delco MU1757 is the part number without.

AC Delco MU1005 is the part number with RPO code K53.

 

You can find similar pumps at auto parts stores for very similar values but do not buy anything super cheap, they will just fail.

 

[G.R. Morton]

Thank for the info.  If I understand correctly, my RPO sheet does not have a K53 code (or k52, k54, k55), so I  need the MU1757.

[CamGTP]

Correct.

[chem_man]

While you are looking for a new pump, look at the corresponding Delphi pumps as well.  Delphi is also a major OEM supplier of fuel pumps.