Dec 16, 2014 · I had the check engine light to come on yesterday and I stopped @ Oreilles to check for the code. The code reader picked the code as p0521, has anyone experienced this …

Mar 8, 2022 · After replacing the oil pressure switch roughly a month ago the oil pressure has been holding ~25-30 psi around 2000rpm, and ~10 at idle. Recently this has dropped to ~20 at …

Apr 27, 2017 · I am working on a 2007 Chevy Tahoe, 4WD, 5.3L engine with RPO code LMG. It came in with codes P0300 and P0521. It had a valve train noise and I was able to isolate it to …

Nov 13, 2012 · need help troubleshooting code P0171, P0174 Jump to Latest 89K views 9 replies 5 participants last post by N5856Z May 10, 2019 N5856Z Discussion starter

Feb 13, 2019 · So after getting the dreaded lifter issue (Cylinder 6) I decided to put a reman engine in with the DOD/AFM delete, so hopefully this wouldn't ever happen again- and due the …

Mar 10, 2009 · The post-cat sensor on the same side set the code this time. I cleared the check engine light and am going under the assumption that I probably just cleaned the extra fuel out …

Jan 19, 2013 · At 90,800 miles check engine light comes on yet again-dealer diagnosed as another P0521 code and replaces sending unit. Although this time I have to pay for it as it's …

May 8, 2017 · P0521 is telling you the oil pressure is bad ..no answer on what oil used .. not gonna get help .. need GM dexos engine oil spec .. communication problem ?

Oct 19, 2017 · Have a 2013 1500 5.3 vin7 with 125k So if tried the oil pressure sensor sensor, the screen under it, put in a k and n oil filter, and replaced the pump. Symptoms... Have low oil …

Jan 4, 2022 · Come to find out my engine wasn't drawing enough air flow into two of the bank one cylinders due to the intake valves not fully opening, thus the air/Fuel imbalance code. After …