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Message: <blockquote data-quote="bigdogYJ" data-source="post: 28850" data-attributes="member: 11207">TLDR: Fuel pump may have kicked the bucket finally — still gotta check fuel pressure to confirm.  Trying to find replacement and ACdelco does not have one listed??  That doesnt seem right.  I checked rockauto and they have a couple options listed.  Since this is a regular LM7 5.3 no e85 or anything it is an ext cab long bed (157.5” WB).  Not sure which part number i should be using.  I don’t have  any of the RPO codes mentioned here:[ATTACH=full]6022[/ATTACH]Full Story:So let’s just say we had a rough weekend with the 2000 Silverado. It started off with the check engine light coming on the day before my brother borrowed it to help his girlfriend move about 3 hours out of town this weekend.  P0420 — ok that’s not shocking it is original cat’s and made it 26 years and over 300k miles.  I’ll plan to look into it next week and get it taken care of.  It will be fine to drive for this trip. Well he made it to his destination, but called me when the oil pressure gauge dropped to near 0 at hot idle and got the check engine oil pressure warning on the DIC.   It seemed to recover and but bounced up and down, did this a few times.  No odd noises when raising engine about idle gauge goes up and seems to hold pressure. Oil just above halfway on hashed area of dipstick.  At highway speeds (~2k RPM) it holds steady between 35-40psi.  Anyways decided it’s probably the pickup tube oring and should be safe to drive back since it’s mostly downhill and an easy drive.  [ATTACH]6021[/ATTACH]On his way back today made it the nearly 3 hours trip back and pulled off the highway and the truck died at a red light.   Kinda coughed and died.  Tried to restart but cranked over and sputtered but never fired up (while at the light got rear ended by a guy with no license or insurance  — thankfully it was minor and he helped push it to the shoulder — i’ll deal with that later).   He called me and I came over to check it out.  Crank/sputter ran for a 2-3 seconds and stalled.  so I’m thinking fuel pump.  Got it towed home.  Planning to get a fuel pressure gauge on it this week and confirm.  But in the meantime I’m trying to find what options i have for fuel pumps and having a tough time narrowing it down.  Anyone have any luck here or is my truck just an oddball and I’m gonna have to go aftermarket?  Am I missing something? TIARPO sticker for reference:[ATTACH=full]6023[/ATTACH]</blockquote>