Noticed you have an 09 like me. Have you tried this reset procedure? ------> https://ricksfreeautorepairadvice.com/service-4-wheel-drive-message/ Mine popped up a while back and this fixed it quick and easy no parts required. Kinda hope it isn't your problem because it sounds like you have put a lot of money into it.
Agreed. These engines are notoriously finicky when it comes to spark plugs. Best to just use the oem delcos. That was going to be my next suggestion if he used the right spark plug wires and they were wired correctly.
I went to NTB one time to get a set of toyo open country m/ts mounted and balanced on my truck. All seemed well but on the drive home when I got up to speed noticed the steering felt touchy as hell and was all over the road. Pulled up the air pressure on the DIC and the knuckleheads had put 80psi in all 4 tires when I should have been running around 35-40 unloaded. In the end not a huge issue but still left me questioning who they employ. Probably won't be using them again.
Have you verified whether they were the correct plug wires or not? That is where I would start. If they aren't right will def cause problems.
Well after talking with the dealer some more yesterday they have agreed to put a new oil pressure sensor on the vehicle and see if that resolves the issue. They stated they would not be going any further than that however. After talking to a couple of mechanics and reading up on the symptoms typically seen with a faulty oil pressure sensor I'm not optimistic this will fix it. We did take it to a 3rd party mechanic but he said it would be $150 to do the test with a manual gauge so we decided against that when the dealer should be handling it. Looks like we will end up having to walk away. A real shame because for a 2007 this vehicle was super clean and everything appeared to be in excellent condition other than that. Oh well the search continues I guess.
So I've been reading up on this and it would seem the oil pressure at hot idle should be around 20-25 psi. IF testing manually with another gauge confirms this vehicle is only at about 10lbs I think it would be safe to say this is a vehicle I should stay far away from correct? It seems likely it would be a oil pump going South or worn cranks bearings if it isn't the 'easy' fix of a new sensor. Or possibly O-Ring around the pickup tube leaking but that requires the pan being dropped. Any other possible 'easy' fixes? I know I could run some thicker oil in it and who knows it may run for years but I want something mechanically sound not something with a bandaid on it. The dealership didn't seem to want any part of addressing the issue yesterday. I guess they figure someone will miss the issue and buy it. I'm not looking at pouring a lot of money into repairs. In the end I will probably just end up walking but maybe dealership will come around and fix it. I am the same person as the OP. Just realized this is a different account.
Maybe try a new ignition coil? Heat can cause expansion and if there are any hairline fractures it can cause issues at operating temp. Only to be resolved once it cools down a little bit. Sounds similar to your problem. Might be worth a shot if it isn't too expensive or you know someone you can borrow one from.
Need to change the power steering pump on my 09 silvy 5.3L. It is leaking and whining during acceleration. Any particular brand you guys recommend? OEM? I'm reading mixed reviews on the cheap refurb units a lot of people saying they are noisy. Thanks for any input! Sent from my SM-N975U using Tapatalk
So I'm about to change the oil cooler block off gasket on my 09 5.3 Silverado. I have the Felpro oval gasket. One of the sides of the gasket is raised more than the other. What is the appropriate orientation? Does the raise point towards the inside of the block off cap or toawrds the block? Thanks! Sent from my SM-N975U using Tapatalk
Yeah as mentioned above sounds like your bulbs aren't seating well. Also check the condition of you connectors really well. I know several people including myself have had problems with these trucks burning up the low beam connectors. Not sure if it is a short somewhere or what but I've been through several. I would have the same issue sometimes they would decide to work and other times they wouldn't.
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