- Oct 29, 2021
- Reaction score
I have a 2007 Chevy Tahoe LT 2wd with the 5.3 flex fuel. The day I bought her (April of 2016) I was 2 hours into the 4 hour trip back home when the "low oil pressure shut down engine" came on. Of course I panicked and pulled off, checked oil level, called the guy I bought it from, and prepared for the worst possible news. He assured me it still had pressure but just needed a new sensor.... Cut to pulling into my driveway.... Bought a new switch, the 1-1/16" socket to turn it, and built the perfect dual 6" + swivel tool combo to get to the damn thing. Swapped it out (took me close to 1.5 hours) drove around the block and same light comes right back on.... #&[email protected]! Phoned a knowledgeable friend who told me most people forget or don't realise there's a screen under the sensor.... Well shoot, my new unit didn't come with one so I guess I'll go buy one, replaced the screen and oil pressure was good for another 1-2 months.... Yup, it F#&$ING happened again but this time while towing a trailer to a different state.... So knowing that my sensor was good and the screen was pretty fresh still I took it to whatever local jiffy lube was near and asked them to do a flush treatment (motor medic or something like that) and since that day I have never experienced low pressure again. Until new years eve a few days ago while completely loaded and heading to an out of town gig. I pulled over, checked oil, waiting around for my heart to mend and the engine to cool and started her up and oil pressure came back. Dropped a few more times there and one more time on the way home. Going to go through the motions again today and run motor medic, change oil, swap in a new pressure sensor, and replace the screen. I'm half tempted to remove the screen altogether although I'm not sure if that would cause a leak or do some sort of damage although I've since helped friends replace their sensors and found they don't have a screen (older models). Hope this helps someone. Sorry for the novel. I'll attempt to update in the following weeks as to whether it worked again or not.