I have a 2007 chevy suburban. I have a [engine](/topics-e...

Ok

Hello and welcome! My name isCustomerand I can assist you with your question. I am a former master tech and I have worked in this field for 20 years. I specialize this type of problem you are experiencing so I am confident I can assist with this issue. I am sorry you are having this issue and I understand this can be frustrating so I will try my best to help. While we are working on this issue together, please allow up to 30 minutes (or more) between replies as I might be online helping other customers or offline spending time with family. Please understand I can only see what is on this page and what you have already shared with me. Please keep in mind, I don’t know the history of the vehicle and I don’t know your mechanical ability, however, I will try my best to help. The phone call prompts are automatic and are coming from the web site, not from me. If you would like to speak on the phone, please request a phone call on your end and I will call you right away. I am going to start by asking some basic questions to get up to caught up to where you are at with this situation so I can assist you in a timely manner. I appreciate your time and patience while we are working together on this issue. My goal is to provide you with a pleasant experience and ensure all of your questions are answered. Please reply back at anytime so I can fully answer or address any questions or concerns you may have. _Please download or save any documents or images I may send you as they will automatically expire after 7 days._ Can I start by getting the code stored in the computer and engine size please?

Code is for oil pressure sensor. Engine size is 5.3

Please send me the code number.

I do not have code on hand. I dont have a reader at this moment

Was it a P0521 code?

Without knowing all of the information like the vehicle history, the components that have been tested or replaced, the results of any tests that need to be run and without being there myself looking at the vehicle, it is hard to say exactly what is going on. I can only give you a general answer, but I hope this helps. Based on my experience, here are the possible causes. - Engine Control Module (ECM) - Instrument Panel Cluster (IPC) - Oil Pressure Relief Valve - Oil Pressure Sending (OPS) Switch Wiring - Oil Pressure Sending Switch Engine Oil Pressure Sender and Engine Oil Pressure Sender Screen are the most common out of the above possible causes. If the oil pressure send has been replaced, you may want to remove the Oil Pressure Sending sender and then remove the screen and verify it is clean. If not, clean or replace it as needed. If the screen is not the issue and the problem remains once checking or replacing the screen, install an oil pressure gauge and run the engine until the Instrument Panel Cluster gauge indicates low oil pressure. You can compare the mechanical gauge to the scanner value under live data. If the mechanical gauge indicates a normal value and the IPC indicates no pressure, disconnect the OPS jumper the Gray wire to the Tan/Black wire and check the scanner value.If a high pressure/voltage value is indicated, replace the OPS. If there is no actual oil pressure indicated on the mechanical gauge, check for failed bearings. It has been a pleasure working with you so far. Keep in mind this is a “starting point”. We can always continue as needed at a later date or at any time. Feel free to run some tests and reply back for further assistance as needed. My goal is to provide you with excellent service. If you have follow-up questions on this same topic, please use the reply box below. To start a new conversation with me on a new topic, you can [request me here](http://www.engine-misfire.com/justanswer-downloads/). Glad I can help. Please let me know if you have any further questions. Thanks and have a great day!