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 …

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 …

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 …

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 ?

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 …

May 11, 2017 · History: Bought truck new- 2007 Silverado Crew Cab LTZ Z71 4x4 with 5.3 and active fuel management. All was great for a while, first new vehicle I'd ever owned. At 54,500 …

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 …

Use this information to interpret the RPO numbers on the vehicle’s Service Parts Identification (SPID) label.

Jan 19, 2013 · At 80,300 miles check engine light comes on and engine develops loud knocking-dealer diagnosed agressive lifters/lifter oil filter dirty/P0521 oil pressure sender fluctuation, …

Feb 13, 2019 · Home Forums Chevy Truck Tech Forums Chevy C/K Truck Forum AZlancher So after getting the dreaded lifter issue (Cylinder 6) I decided to put a reman engine in with the …