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  1. Vortec 6000 6.0L V8
    What should the oil pressure be at idle on a 2013 Silverado 2500 with the 6.0 gasser?
  2. Vortec 5300 5.3L V8
    Hi All. Happy new year! I'm new to the forum and have a question about oil pressure on my 2010 1500 4WD with a 5.3L and 216k miles. I've seen lots of discussions on here about oil pressure issues, but I haven't seen any that match what I'm experiencing. Basically, as the engine warms, the...
  3. Vortec 5300 5.3L V8
    I’ve looked through a good number of the threads on here and haven’t quite found anyone with the same issue I’m having. So while cruising down the interstate, my oil pressure will fluctuate between roughly 22 and 32 PSI, with no change in speed or RPMs. It just sorta bounces back and forth, but...
  4. Vortec 5300 5.3L V8
    So normally my oil pressure would sit at 60 psi but its recently been having issues so at idle it completely drops to 0 psi it did however once sit at 30 psi when i was parked at home. Its also a gradual drop so its not an immediate drop to 0 psi but it does drop. As soon as I hit the gas it...
  5. Duramax 3.0L I6 Diesel
    Picked up my 2024 3.0 Duramax LTZ 2 weeks ago and noticed a few things that I have questions on. Please note I am using a Scan Gauge III for my data and now have 600 miles on the truck. Oil pressure is between 19 and 21 PSI once in a while it will jump to 37 but drop right back down to 19...
  6. Vortec 5300 5.3L V8
    I have a 2008 Chevy Silverado Z71. A few years ago it dropped oil pressure so we stopped driving it. Just recently we found someone who replaced the oil pump, previously we fixed the oil sending unit. I was driving my truck back from the shop and a few miles after getting on the highway the oil...
  7. Vortec 5300 5.3L V8
    Oil pressure sits at 38-40 Cold idle but when warm sits at 20 idle. when you tap the gas at idle not even getting above 700 rpm it goes right back to 40. this is after fresh oil change and wix xp filter
  8. EcoTec 5.3L V8
    Has anyone had experience with this code popping up on their truck? What is the cause and effect of this code/issue? What is the repair that you had to do? Where about on the engine is this solenoid valve located? Is it safe to drive or would I be running the risk of burning up my engine...
  9. Vortec 5300 5.3L V8
    If I’m replacing my lifters due to a severe lifter tick what else should I replace with it?
  10. Vortec 5300 5.3L V8
    I have a 2012 Sierra 1500 SLE with the 5.3. Just had to replace the wonderful lifters after #7 AFM collapsed, engine pressure checked fine and runs nice a quiet. However, I am now getting the P0521 code. When we had the engine torn down we replaced the oil sender with a new AC Delco one, for a...
  11. Engine
    Can I re-check the bearing clearance on my recently built and run TBI 350 by pulling the mains and rod ends, wiping them down and plastigauging them? Or, do I need to pull the entire crank, wipe both sides of the bearings down and reassemble "dry" to get a more accurate (as much as you can with...
  12. Vortec 5300 5.3L V8
    (oil pressure at running temp is about 20ish psi) I got the p0521 code the other day, and I replaced the oil pressure sensor and the little filter. I cleared the code and everything was fine for the next day or so. then the check engine light came back on same code! I'm wondering what else it...
  13. Vortec 5300 5.3L V8
    Hello all I have a 2007 GMC Sierra new body style 5.3 with AFM (arghhh) and I was driving down the high way last night and I got a low oil pressure turn off engine warning an a P0521 code. So this morning I swapped the oil sensor and put in a new filter screen under the sensor knowing this is a...
  14. Vortec 6000 6.0L V8
    Hello, I just recently bought a 01 Silverado 2500HD 6.0 4x4, when I bought it the truck drove amazing and always held a minimum of 40psi of oil pressure, I later did an oil change with 5w-30 and noticed that I would get to as low as 15 psi of oil pressure and sometimes it would drop to zero...
  15. Vortec 5300 5.3L V8
    I've got a 2005 GMC Sierra 1500 Z71 with the L33 engine. This Saturday, I did the oil pan gasket, and the oil pickup tube o-ring. My old o-ring was becoming flat clearly and it was very brittle as it broke when I was taking it off. I changed it because before changing the oil, I would start the...
  16. Vortec 5300 5.3L V8
    Hey all, I have a few questions about the oil pressure sensor on our engines. Lately my oil pressure gauge has been reading too low in general, especially at idle like at red lights or stop signs. I was doing some searching of parts and noticed some show this filter thing that comes with (I’ll...
  17. Vortec 5300 5.3L V8
    2005 Silverado with 278,000 miles with oil pressure gauge that occasionally goes to zero for 1-2 seconds and springs back to 80. No associated engine noise or sputtering. It is not reproducible by coasting, turning, accelerating or decelerating. What could be causing this?
  18. Vortec 5300 5.3L V8
    2000 chevy Silverado 1500 5.3, has low oil pressure problems, my mechanic and I have replaced the oil pressure sending unit, it now has a milling high flow oil pump, thoroughly cleaned pickup tube, cleaned oil pan, and have ran diesel thru it to clean the engine and then did sea foam to clean...
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