Hello new truck and new to the forum! Hope all is well. Just got a 2014 Silverado 4x4. Nice truck with 115k on the clock. Paid the dealer and 3 days later I get this code for oil pump solenoid(P06DD). I’ve been frustrated as hell and checking prices to replace the pump which is around 2k 🙄 and of course the dealer is of no help. So earlier curiosity got the best of me and I tapped on the oil pressure sensor and moved the plug around that goes into the timing cover for the oil pump solenoid and started the truck. No more light🤷‍♂️. Any thoughts? The oil pressures seem weird to me and I can hear a whining like power steering. Thoughts?

 

This one is really stumping me? No inputs or advice here?

 

I know this thread is nearly 10 months old, but FWIW.....I have a 2014 5.3 Crew Cab 4x4 with 170,000. Check engine light came on, dealer came back with the same code (PO6DD). Bad oil pump solenoid, said it would be $2500, I said no thanks. Was told it would be fine but because the variable speed wasn't working that I may have a slight drop in fuel economy. So I continued to drive the truck. I could see the oil pressure a bit higher than usual, and the check engine light would go off at times so the oil pump solenoid was functioning intermittently.
A few weeks later my radiator fans started running and the temp gauge wasn't registering temperature, so I replace the temp sensor, thinking that it had failed since the fans default to run for protection. Everything was good until a couple of days later, the fans came on again and the temp gauge wasn't reading, just as before. I knew it wasn't the sensor since it was new. I decided to reset the ECM by disconnecting the neg battery cable. Drove it again for a couple of days and they came on again. Did the reset again just to get them to turn off (they are very loud), drove again for a day or so and happened to notice that the engine temp was running much lower than usual, don't know why I hadn't paid attention to that earlier. But upon further research found that if the thermostat is bad it will trigger the protect mode that turns on the fans. I replaced the thermostat (factory 207 degree), very inexpensive, and the fans haven't come back on and it runs at steady 210 degrees.

Now weeks later, no check engine light, oil pump solinoid seems to be functioning normally. So I don't know exactly what the deal was, but with all of the interconnectivity and codependence of all these computer controlled systems I can't help but think that was the culprit.
I was so close to pulling the trigger on the oil pump.

 

my dad had the same code in his 14 silverado and they had to change the motor because the pump was going out and they found metal shavings in the oil so they replaced motor when they found the code