P06DA Code

Well stumbled on the fix to my problem. After changing the oil pressure sending unit and disconnecting the battery, the check engine light went off. I drove the truck down the road a ways and the check engine light came back on. So I spent $90 for nothing. Next area I decided to look at was the engine module. The main wire harness little.red clip that locks the harness was broken. I unplugged the harness and plugged it back in and wiggled it down tight and locked the arm back down on the plug. I started the engine and the check engine light went off, drove it down the road pretty aggressive and all seems to be good now. Apparently the mechanic at the dealership broke the clip and didn't plug it back in right when they did the steering assist recall update.

Where is that wire harness located? Any chance you could post a picture? I have been getting the same code on my 2014 5.3 crew cab Silverado and I've taken it to 2 places and they have told me I have a faulty solenoid valve which is located in the oil pump.

Had to bring my truck in for the repair, which ended up being covered by my warranty. The wiring harness is behind the twining cover, they have to take all that area apart. Not sure how it happened but the wiring harness shrank and broke the plug end off and they had to put in a new harness and the low pressure stage of the pump worked after that.

They had to run test at Chevrolet dealership to diagnose. The error code indicates it is a faulty solenoid, but there are other test they run in the diagnostic process. Because the wire pulled off (disconnected itself) that is why I got the code of the faulty solenoid.

Thank you for the quick reply! I will have to take it in to be diagnosed, unfortunately I am not under warranty anymore..

My truck had a permanent p06DD code with the check engine light going on and off for about a year. The solenoid broke which is not uncommon in these trucks. I paid $2200 to replace it because all the belts have to come off, timing chain cover, and oil pan. According to this video apparently if the solenoid breaks the oil pump is still good which would explain the oil pressure gauge still getting mostly normal pressures. https://youtu.be/-1f1u960I-I But I read in another forum that long term use can cause damage to the engine so who the hell knows!?