Oil gauge pegged

[thedream craftlife]

I have a 2014 gmc sierra 1500 2 wheel drive 4.3 with 283,000 miles on it. The torque converter just went out and took the transmission with it. It was owned by a relative and leaked oil on the starter. I have,among other codes, a po6dd and when starting the engine, after oil gauge sets it pegs all the way to 85lbs and stays there. Engine runs fine. I think non- Dexos oil was used (Penzoil high mileage 5w-30. Oil is not very dirty. I know the engine thermostat needs replacing. I am thinking the oil sending unit is bad and causing the po6dd that show up twice in the codes. They say a defective oil sending unit can peg the gauge and set a po6dd code. Am I on the right track?

[newdude]

20 hours ago, thedream craftlife said:

I have a 2014 gmc sierra 1500 2 wheel drive 4.3 with 283,000 miles on it. The torque converter just went out and took the transmission with it. It was owned by a relative and leaked oil on the starter. I have,among other codes, a po6dd and when starting the engine, after oil gauge sets it pegs all the way to 85lbs and stays there. Engine runs fine. I think non- Dexos oil was used (Penzoil high mileage 5w-30. Oil is not very dirty. I know the engine thermostat needs replacing. I am thinking the oil sending unit is bad and causing the po6dd that show up twice in the codes. They say a defective oil sending unit can peg the gauge and set a po6dd code. Am I on the right track?

 

 

Oil pump. 

 

P06DD sets for the oil pressure control solenoid that is a part of the pump.  P06DD is for solenoid stuck off.

 

You'd get a P0521 if it was pressure sensor related and the gauge would peg to zero.  

 

If the truck is worth it, have the pump, timing chain and tensioner replaced.